14. a sample of a hydrocarbon produced 3.14 grams of co2 and 1.28 grams of h2o during combustion analysis. if the hydrocarbon has a molar mass between 50 and 60 g/mol, what is its molecular formula? (1) c3h6 (2) c3h8 (3) c4h4 (4) c4h8 (5) c4h10

The activation of the serine/threonine protein kinase akt requires phosphoinositide 3-kinase (pi 3-kinase) to create phosphorylated lipids that serve as docking sites that localize Akt to the plasma membrane.

Ak strain changing is the meaning of the word Akt. The term "Akt" first appeared in 1928, when J. Furth conducted research on mice that spontaneously generated thymic lymphomas.

An essential enzyme in the signaling pathway that controls how cells react to insulin as well as other growth stimuli is called phosphoinositide 3-kinase (PI3K). To create phosphatidyl-inositol-3,4,5-trisphosphate (PIP3) at the plasma membrane, one such enzyme phosphorylates phosphatidylinositol-4,5-bisphosphate in the third carbon in the molecule.

Therefore, The activation of the serine/threonine protein kinase akt requires phosphoinositide 3-kinase (pi 3-kinase) to create phosphorylated lipids that serve as docking sites that localize Akt to the plasma membrane.

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The five scientists who contributed to the discovery of the cell are Robert Hooke, Antonie van Leeuwenhoek, Matthias Schleiden, Theodor Schwann, and Rudolf Virchow.

The discovery of the cell as the fundamental unit of life involved the collective efforts of several scientists. Robert Hooke, an English physicist, was the first to observe and name cells while examining cork under a microscope in 1665.

Around the same time, Antonie van Leeuwenhoek, a Dutch scientist, improved microscopes and made detailed observations of various microorganisms, further advancing our understanding of cells.

In the mid-19th century, Matthias Schleiden, a German botanist, proposed that all plants are composed of cells, and Theodor Schwann, a German zoologist, extended this concept to animals.

Their combined work led to the formulation of the Cell Theory, which states that cells are the basic building blocks of all living organisms.

Rudolf Virchow, a German physician, later contributed to the development of the Cell Theory by emphasizing the idea that cells arise only from pre-existing cells, rejecting the notion of spontaneous generation. Virchow's work highlighted the significance of cell division and its role in growth, development, and disease.

Through their cumulative efforts, Hooke, van Leeuwenhoek, Schleiden, Schwann, and Virchow made significant contributions to our understanding of cells, paving the way for modern cell biology and numerous advancements in the field of life sciences.

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The number of the molecules of water are needed to completely hydrolyze the polymer that is ten monomers long is the 9 molecules of water.

A polymer can be defined as the macromolecule which is essentially is the combination of the many subunits. The Polymers will be break down into the monomers is called as the hydrolysis of the polymer, which is the reaction in which the water molecule will be  utilize during the breakdown.

One water molecule is use to break the each bond present between the two adjacent monomers in the  polymer during the hydrolysis. The ten-monomer of the long polymer that comprises the nine bonds because the two adjacent monomers are joined through the bond. Therefore, the nine water molecules are required to hydrolyze the ten monomers long polymer.

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Answer:

1 is False

2 is False

3 Is True

4 is True

5 is false

Answer:

the answer is b

Explanation:

i just answer he question and got it right 2022

Answer:

transferred means move from one place to another transformed means make a thorough or dramatic change in the form, appearance, or character of.

Explanation:

The ratio of 32 to 16 is:

Hence, 2:1 will be the ratio.

Hoped this helped.

\(BrainiacUser1357\)

Answer:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

The total ionic equations shows the equation in which all the species of the reactants and the products are in dissociated form and are represented as ions.

The net ionic equations shows the equation in which all the species of the reactants and the products are in dissociated form and do not show the spectator ions which are same in the reactants and the products.

a) zinc nitrate + calcium sulphide \(\rightarrow \) zinc sulphide + calcium nitrate

balance equation : \(Zn(NO_3)_2(aq)+CaS(aq)\rightarrow ZnS(s)+Ca(NO_3)_2(aq)\)

total ionic equation :

\(Zn^{2+}(aq)+2NO_3^-(aq)+Ca^{2+}(aq)+S^{2-}(aq)\rightarrow ZnS(s)+Ca^{2+}(aq)+2NO_3^-(aq)\)

net ionic equation :

\(Zn^{2+}(aq)++S^{2-}(aq)\rightarrow ZnS(s)\)

b) potassium + calcium chloride  \(\rightarrow \) potassium chloride + calcium

balance equation : \(2K(s)+CaCl_2(aq)\rightarrow 2KCl(aq)+Ca(s)\)

total ionic equation :

\(2K(s)+Ca^{2+}(aq)+2Cl^-(aq)\rightarrow 2K^+(aq)+2Cl^-(aq)+Ca\)

net ionic equation: \(2K(s)+Ca^{2+}(aq)+\rightarrow 2K^+(aq)++Ca\)

The term that is used to defined the amount of time it takes for 50% of a sample of radioactive nuclei to decay is half life.

Generally, the half-life, in radioactivity is defined as the interval of time that is required for one-half of the atomic nuclei of a radioactive sample to decay (that change spontaneously into other nuclear species by emitting particles and energy), or equivalently, the time interval which is required for the number of disintegrations per second of a radioactive.

The half-life of a radioactive isotope is also defined as the amount of time it takes for one-half of the radioactive isotope to decay. The half-life of a specific radioactive isotope stays constant and it remains unaffected by conditions and is independent of the initial amount of that isotope.

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Without knowing the specific experiment or reaction being referred to, it is difficult to provide a detailed answer.

However, in general, signs that indicate a chemical reaction occurred include a change in color, the formation of a precipitate, the evolution of gas (bubbles), and a temperature change. A temperature change could be either an exothermic (heat is produced) or endothermic (heat is absorbed) reaction, depending on the specific reaction being observed.

If steel wool is being used in the experiment, it may be observed that the steel wool is reacting with another substance. If the steel wool reacts with oxygen in the air, it may undergo a combustion reaction, creating a temperature increase, producing heat, and possibly releasing a gas. Additionally, the steel wool may change color, become charred or blackened, and appear brittle or broken down due to the reaction.

In summary, signs that indicate a chemical reaction occurred include color change, precipitate formation, gas evolution, and temperature change. When steel wool reacts with oxygen, it may undergo a combustion reaction, producing heat, changing color, and becoming brittle.

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The energy needed to change the temperature of 1 g of water by 1 °C is 0.415 J. Then the energy needed to change the temperature of 50 g of water by 15 °C is 311.25 J.

The specific heat capacity of a substance is the heat energy needed to increase the temperature by 1 °C per one gram of the substance. The specific heat of water is 0.415 J/g °C.

Hence, the energy needed to change the temperature of 1 g of water by 1 °C is 0.415 J. The energy needed to change the temperature can be found using the calorimetric equation as follows:

Q = m c ΔT

Here m = 50g

c = 0.415 J/g °C.

ΔT = 15 °C.

then q= 50 g ×15 °C ×0.415 J/g °C

          = 311.25 J.

Therefore, 311.2 J of energy needed to change the temperature of 50 g of water by 15 °C.

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Answer:The kinetic energy will increase and the pressure of the gas will also increase.

Explanation:

An increase in temperature will normally cause an increase in volume. Because the gas is enclosed in a rigid container the volume of the container can not increase.

An increase in temperature is by definition is an increase in kinetic energy. The increase in kinetic energy will cause the molecules of the gas to move more rapidly. As the molecules move more rapidly they collide with each other more violently. These collisions will cause an increase collisions will cause an increase in pressure.

Answer:

A saturated solution may not be a concentrated solution IF the solute is only sparingly or slightly soluble in the solution.

Answer:

Ridges

Explanation:

Ridges separate watersheds

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Radiant energy from the sun is converted to chemical energy by plants is one example of energy transformation during digestion.

Considering the definition of atomic mass, isotopes and atomic mass of an element, the average atomic mass of the element is 69.7232 amu.

The atomic mass is obtained by adding the number of protons and neutrons in a given nucleus of a chemical element.

Isotopes are those for different atoms, that is, their atomic numbers are the same, but the number of neutrons is different.

The atomic mass of an element is the weighted average mass of its natural isotopes and is calculated as the weighted average of the masses of the different isotopes of each element, taking into account the relative abundance of each of them.

In this case, you know:

The average mass can be calculated as:

average mass= 68.9256 amu×0.601 + 70.9247 amu×0.399

average mass= 69.7232 amu

Finally, the average atomic mass of the element is 69.7232 amu.

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The researcher used a stratified sample, which is likely to yield a representative sample by including both genders.

In this study, the medical researcher has employed a combination of sampling methods. For the selection of the 100 males and 100 females, a stratified sample has been used.

This method involves dividing the population into homogeneous subgroups (in this case, males and females) and randomly selecting participants from each subgroup. By using a stratified sample, the researcher ensures representation from both genders, which is likely to yield a more representative sample.

However, the specific sampling method used within each gender group is not mentioned. If the researcher employed a simple random sample within each gender group, it would involve randomly selecting participants from the entire population of males and females, respectively.

This would further enhance the representativeness of the sample, as each individual would have an equal chance of being selected.

It is crucial to note that the information provided does not specify the sampling method for selecting the participants. Therefore, it is challenging to determine whether convenience sampling, systematic sampling, or cluster sampling was employed.

However, these methods are generally considered less representative than simple random sampling or stratified sampling, as they may introduce bias by limiting the inclusion of certain individuals or groups.

In summary, the stratified sampling approach used to select 100 males and 100 females suggests an attempt to obtain a representative sample.

However, without further information on the specific sampling methods employed within each gender group, it is difficult to determine the overall representativeness or potential biases of the sample.

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Answer:

Your answer would be B. Increasing the distance between the water molecules and increasing their phase energy.

Explanation:

Hope this helps you answer this question!

Answer:

0.833 moles of Phosphorus

Explanation:

100 g C * \(\frac{1 mol C}{12g C}\) * \(\frac{1 mol P}{10 mol C}\) = 0.833 mol P

Given the reaction:3 C + 2 Al2O3 → 4 Al + 3 CO2, 12 moles of aluminum are produced; we need to determine how many moles of carbon reacted. The balanced chemical equation is:3 C + 2 Al2O3 → 4 Al + 3 CO2From the balanced equation.

Moles of carbon will react with 2 moles of Al2O3 to form 3 moles of CO23 moles of carbon will react with 4 moles of Al to form 3 moles of CO2Therefore, the ratio of carbon to aluminum is 3:4 or 0.75:1.To find the number of moles of carbon reacted, we will multiply the moles of aluminum by the ratio of carbon to aluminum:12 moles of aluminum × 0.75 moles of carbon / 1 mole of aluminum = 9 moles of carbon Therefore, 9 moles of carbon reacted. Given To synthesize 250 kg of ammonia (NH3), we need to determine the mass of hydrogen gas required. The balanced equation for the reaction is:N2 + 3 H2 → 2 NH3From the balanced equation:1 mole of nitrogen (N2) reacts with 3 moles of hydrogen (H2) to form 2 moles of ammonia (NH3)The molar masses (in g/mol) are:H2 = 2.0 g/molN2 = 28.0 g/molNH3 = 17.0 g/mol.

Using these molar masses, we can calculate the number of moles of NH3:250 kg = 250,000 g Number of moles of NH3 = mass / molar mass = 250,000 g / 17.0 g/mol = 14,705.88 mol Since the ratio of hydrogen to ammonia is 3:2, we can find the number of moles of hydrogen:2 moles of NH3 will react with 3 moles of H2Therefore, 14,705.88 mol of NH3 will react with:14,705.88 mol of NH3 × 3 mol of H2 / 2 mol of NH3 = 22,058.82 mol of H2Finally, we can calculate the mass of hydrogen in kilograms Mass of hydrogen = number of moles of H2 × molar mass of H2 / 1000= 22,058.82 mol × 2.0 g/mol / 1000 = 44.12 kg ≈ 44 kg Therefore, the mass of hydrogen required to synthesize 250 kg of ammonia is approximately 44 kg.

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The most likely formula for the compound composed of element x and nitrogen is CX₄

Element X has a ground- state valence electron configuration of ns2np5

It'll partake one electron to complete its quintet. therefore, it'll form one covalent bond. C snippet shares 4 electrons to complete its quintet. Hence, C snippet forms 4 covalent bonds. therefore, one C snippet will combine with 4 X tittles. The formula of the carbon emulsion most likely to be formed is CX4.

An ionic compound is formed when two atoms combine and one atoms transfers electron to the other atom. Ionic bonds are usually formed between metals and nonmetals.

The element M has two valence electrons and has a valency of two while the element X has seven valence electrons and a valency of one. Hence, the formula of the ionic compound that would most likely result from the reaction between ions of M and X is MX₄.

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Answer: 64.1 grams of HCl were used in the reaction

Answer:

The correct answer is B] Feeling the grains of salt in between your fingers.

Explanation:

Evidence that matter is too small to be seen without magnification includes feeling the grains of salt in between your fingers, because the individual grains of salt are too small to be seen with the eye. Other examples of matter that is too small to be seen without magnification include atoms, molecules, and subatomic particles.

A] Feeling the heat come off the flames of a fire, C] Watching salt disappear when it dissolves in water, and D] Watching rain fall from the sky during a thunderstorm are all examples of phenomena that are caused by matter, but they do not necessarily provide evidence that matter is too small to be seen without magnification.

Answer:

44.8 g

Explanation:

Density = mass / Volume

Mass = density x Volume = 8.96x 5 = 44.8 g

Answer:

mercury

Explanation:

water, milk

because this are liquid

It is likely that the white deposits at the bottom of the container are sugar crystals, which formed when the saturated solution of sugar cooled down. This is because when a solution is saturated, it contains the maximum amount of solute that can be dissolved in it. When the temperature drops, some of the solute can no longer remain dissolved and forms crystals.

A saturated solution is a solution that has dissolved as much solute as it is capable of dissolving. In a saturated solution, no more solute can be dissolved at a given temperature. We can make an saturated solution by keep on dissolving solute until no more solute can be dissolved.

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Answer:

Channel 7's frequency is 117.5 MHz

Answer:

174 MHz - 180 MHz w/ center frequency of 177 MHz

Explanation:

216 - 174 = 42

42/7 = 6

6 + 174 = 180          -           7                   -               177 MHz

180 + 6 = 186          -           8                   -               183 MHz

186 + 6 = 192          -           9                   -               189 MHz

192 + 6 = 198          -          10                   -               195 MHz

198 + 6 = 204          -          11                   -               201 MHz

204 + 6 = 210          -          12                  -               207 MHz

210 + 6 = 216          -           13                  -               213 MHz

The balanced equation is now: H₃PO₄ + 3NaBr → 3HBr + Na₃PO₄. The reaction is a double displacement or double replacement reaction. It involves the exchange of ions between two compounds. In this case, sodium bromide (NaBr) and hydrobromic acid (HBr) exchange ions to form phosphoric acid (H₃PO₄) and sodium phosphate (Na₃PO₄).

To balance the chemical reaction: H₃PO₄ + NaBr → HBr + Na₃PO₄, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

Let's balance the equation step by step:

Start by balancing the least complex or least occurring atoms. In this case, we can begin with the sodium (Na) and the phosphorus (P) atoms.

H₃PO₄ + NaBr → HBr + Na₃PO₄

Balance the sodium (Na) atoms by placing a coefficient of 3 in front of NaBr:

H₃PO₄ + 3NaBr → HBr + Na₃PO₄

Balance the phosphorus (P) atoms by placing a coefficient of 1 in front of H3PO4:

H₃PO₄ + 3NaBr → HBr + Na₃PO₄

Balance the hydrogen (H) atoms by placing a coefficient of 3 in front of HBr:

H₃PO₄ + 3NaBr → 3HBr + Na₃PO₄

Finally, balance the bromine (Br) atoms by placing a coefficient of 1 in front of NaBr:

H₃PO₄ + 3NaBr → 3HBr + Na₃PO₄

The balanced equation is now:

H₃PO₄ + 3NaBr → 3HBr + Na₃PO₄

Classification of the reaction type:

The reaction is a double displacement or double replacement reaction. It involves the exchange of ions between two compounds. In this case, sodium bromide (NaBr) and hydrobromic acid (HBr) exchange ions to form phosphoric acid (H₃PO₄) and sodium phosphate (Na₃PO₄).

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The standard enthalpy change for reaction (3) is 117.1 kJ.

The standard enthalpy change for reaction (3) can be calculated by using the enthalpy changes of reactions (1) and (2) and applying Hess's Law.

To do this, we need to manipulate the given equations so that the desired reaction (3) can be obtained.

First, we reverse reaction (1) to get the formation of C2H4(g) from C2H6(g):

C2H4(g)C2H6(g) ΔH° = -52.3 kJ

Next, we multiply reaction (2) by 2 and reverse it to obtain 2 moles of C2H6(g) reacting to form 3 moles of H2(g):

2C2H6(g)2C(s) + 3H2(g) ΔH° = 169.4 kJ

Now, we add the two modified equations together:

C2H4(g)C2H6(g) ΔH° = -52.3 kJ
2C2H6(g)2C(s) + 3H2(g) ΔH° = 169.4 kJ

When adding these equations, the C2H6(g) on the left side cancels out with the C2H6(g) on the right side, leaving us with the desired reaction (3):

C2H4(g) + H2(g)C2H6(g) ΔH° = -52.3 kJ + 169.4 kJ = 117.1 kJ

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