What is the mass (in g) of a solid piece of iron which has a specific heat of 0.449 J/g°C if when it absorbed 948.0 J of heat the temperature rose from 24.0°C to
82.1°C? Give your answer in 3 sig figs.

Answer:

you tell me

Explanation:

Answer:

D

Explanation:

The ratio of C6H12O6 (which will be referred to as "the carb") to oxygen is 1 to 6, so if we find an answer which has the same ratio, it should be chosen. A is 1:3
B is even worse with a ratio of the carb to oxygen of 1:2
C is the same as B, 1:2
D has a ratio of the carb to oxygen of 1:6, which is what we are looking for.

4

beacause it is4 is teta and 7 is hepta

100Eu+e 16S---Sm150  represents alpha decay because  minimum penetration power and highest ionization power.

A positively charged particle similar to the helium-4 nucleus is spontaneously released during alpha decay. Two protons and two neutrons make up this particle, also referred to as an alpha particle. Sir Ernest Rutherford made the discovery and gave it a name in 1899.

The nuclei of heavy elements like radium, uranium, thorium, etc. undergo alpha decay. When a radium (Ra) nucleus decays, it releases an alpha particle and transforms into a radon (Rn) nucleus.

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The correct option is 2.

A 88

B 94

C 100

To solve this problem, we need to use our knowledge of how streams flow and how velocity changes in different parts of the stream.

Typically, streams flow fastest in the center of the channel and slowest along the edges, due to friction with the banks and bottom of the stream.

Given that it lies in the middle of the stream's two extreme velocities, option 2, which equals 94, is probably the right response. The velocity near the channel's middle is probably closer to 100 because the stream runs there the quickest.

On the other hand, it is likely that the velocity near the edges is closer to 88 since the stream runs more slowly along the edges due to friction with the banks and streambed. Consequently, a velocity of 94 is the most logical choice because it is within the range that is  predicted by the velocity distribution of a stream.

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Answer: The molarity of the new solution is 0.169 M

Explanation:

We use the dilution law:

\(M_1V_1=M_2V_2\)

where,

\(M_1\text{ and }V_1\) are the molarity and volume of concentrated solution

\(M_2\text{ and }V_2\) are the molarity and volume of diluted solution

We are given:

\(M_1=0.750M\\V_1=225mL\\M_2=?\\V_2=1.00L=1000ml\)

Putting values in above equation, we get:

\(0.750\times 225=M_2\times 1000\\\\M_2=0.169M\)

Thus the molarity of the new solution is 0.169 M

Answer:

No. A

Explanation:

cause due to the friction between both molecules heat is produced rapidly.

The answer is A) Heat transfer through electromagnetic waves.

Cause due to the friction between both molecules heat is produced rapidly.

Radiation can harm the DNA in our cells. Excessive doses of radiation can motivate Acute Radiation Syndrome (ARS) or Cutaneous Radiation accidents (CRI). High doses of radiation could also cause most cancers later in life.

Radiation is a mutagen, which finally can lead to cancer. Radiation can either kill cells or harm the DNA within them, which damages their capacity to reproduce and might in the end cause cancer. whilst radiation is a gift, excessive electricity debris bypasses your body.

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Answer: you can't really balance it doesn't make anything

Explanation:

The reaction of the hydrogen atoms is;  H + H ---> H2.

We have to note that when we talk about a chemical reaction there is the combination of two substances so as to get a product out of it. In this case, we are having two atoms that are coming together.

In tis case, there are just two atoms of the hydrogen and they want to come together to form a compound. This is going to look something like saying that we have; H + H ---> H2.

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The mass of the asteroid is C. 1.2 x \(10^{12}\) Kg

To find the mass of the other asteroid, we can rearrange the equation for the gravitational force between two objects:

F = (G * m1 * m2) / \(r^{2}\)

where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two asteroids, and r is the distance between them.

Given that the distance between the asteroids is 75000 m, the force of gravity between them is 1.14 N, and one asteroid has a mass of 8 x \(10^{7}\) kg, we can substitute these values into the equation and solve for the mass of the other asteroid (m2):

1.14 N = (6.67430 × \(10^{-11}\) N \(m^{2}\)/\(Kg^{2}\) * 8 x \(10^{7}\) kg * \(m2\)) / \((75000 m)^{2}\)

Simplifying and solving the equation, we find that the mass of the other asteroid (m2) is approximately 1.2 x \(10^{12}\) kg. Therefore, Option C is correct.

The question was incomplete. find the full content below:

Two asteroids are 75000 m apart one has a mass of 8 x \(10^{7}\) kg if the force of gravity between them is 1.14 what is the mass of the asteroid

A. 3.4 x \(10^{11}\) kg

B. 8.3 x \(10^{12}\) kg

C. 1.2 x \(10^{12}\) kg

D. 1.2 x \(10^{10}\) kg

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Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

volume = final volume of water - initial volume of water

From the question

volume = 35.9 ml - 25.8 ml = 10.1 mL

We have

mass = 2.99 × 10.1 = 30.199 g

We have the final answer as

Hope this helps you

Answer: c????????

Explanation:

For the 6s subshell, the magnetic quantum number is zero while for the 4f subshell we have -3, -2, -1, 0, 1, 2, 3.

The magnetic quantum number takes on values between 0 to (n - l). It gives the orientations of the sublevels. The four types of quantum numbers are;

For the 6s subshell, the magnetic quantum number is zero while for the 4f subshell we have -3, -2, -1, 0, 1, 2, 3.

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Answer:

The amount of heat that must be removed from steam at 100 degrees Celsius to get ice at -273 degrees Celsius can be calculated using the formula for the heat of fusion of water. The heat of fusion of water is approximately 333.55 joules per gram, which means that it takes 333.55 joules of energy to convert 1 gram of liquid water at 0 degrees Celsius to 1 gram of ice at 0 degrees Celsius.

To convert 0.000010 kg of steam at 100 degrees Celsius to ice at -273 degrees Celsius, we must first convert the steam to liquid water at 100 degrees Celsius, which requires the addition of heat. The heat required to do this can be calculated using the specific heat capacity of water, which is approximately 4.186 joules per gram per degree Celsius. The specific heat capacity tells us how much heat is required to raise the temperature of 1 gram of a substance by 1 degree Celsius.

To convert 0.000010 kg of steam at 100 degrees Celsius to liquid water at 100 degrees Celsius, we would need to add (0.000010 kg) * (100 degrees Celsius) * (4.186 joules/gram/degree Celsius) = 0.004186 joules of heat.

Once the steam has been converted to liquid water, we can then convert the water to ice at -273 degrees Celsius. To do this, we would need to remove (0.000010 kg) * (333.55 joules/gram) = 0.033355 joules of heat.

In total, we would need to remove 0.004186 joules + 0.033355 joules = 0.037541 joules of heat from 0.000010 kg of steam at 100 degrees Celsius to get ice at -273 degrees Celsius.

Explanation:

Answer:

Chemists investigate the properties of matter at the level of atoms and molecules. They measure proportions and reaction rates in order to understand unfamiliar substances and how they behave, or to create new compounds for use in a variety of practical applications.

Explanation:

Answer: Chemist study properties of matter at the level of atoms and molecules. They measure proportions and reaction rate in order to see how unfamiliar substance and how they behave

Explanation:

Answer:it do not states

Explanation:

In the balanced equation \(2C_{2} H_{6}\) + \(7 O_{2}\) --> \(4 CO_{2}\) + \(6H_{2}O\) if 21 g of \(C_{2} H_{6}\) reacts with 32 g O₂, C₂H6 is the limiting reactant.

To determine the limiting reactant, we need to compare the amount of each reactant to the stoichiometric ratio in the balanced equation.

Let's calculate the number of moles for each reactant using their molar masses:

For \(C_{2} H_{6}\) (ethane):

Molar mass of \(C_{2} H_{6}\) = 2(12.01 g/mol) + 6(1.01 g/mol) = 30.07 g/mol

Number of moles of C₂H6 = 21 g / 30.07 g/mol ≈ 0.698 mol

For O₂ (oxygen):

Molar mass of O₂ = 2(16.00 g/mol) = 32.00 g/mol

Number of moles of O₂ = 32 g / 32.00 g/mol = 1.00 mol

Next, we compare the moles of each reactant to the stoichiometric ratio in the balanced equation:

2 moles of \(C_{2} H_{6}\) react with 7 moles of O₂ to produce 4 moles of CO₂ and 6 moles of H₂O.

From the given amounts, we have:

0.698 mol \(C_{2} H_{6}\) and 1.00 mol O₂.

Using the stoichiometric ratio, we can calculate the expected amount of CO₂ and H₂O produced for each reactant:

For C₂H6:

Expected moles of CO₂ = 0.698 mol C₂H6 * (4 mol CO₂ / 2 mol C₂H6) = 1.396 mol CO₂

For O₂:

Expected moles of CO₂ = 1.00 mol O₂ * (4 mol CO₂ / 7 mol O₂) ≈ 0.571 mol CO₂

Comparing the expected moles, we see that the calculated amount of CO₂ is greater when used \(C_{2} H_{6}\) as the limiting reactant. Therefore, the limiting reactant in this reaction is \(C_{2} H_{6}\).

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Answer: Two substances have different properties because they are made of different types and numbers of atoms that repeat.

Explanation: According to the article “Atomic Zoom-In”, all matter is made of tiny pieces called atoms, and there are 118 different types of atoms in the universe. Every substance is made of a unique combination of atoms, which can be represented by a chemical formula. The chemical formula shows the types and numbers of atoms that repeat to make up a substance.

For example, water has a chemical formula of H2O, which means it is made of groups of 2 hydrogen atoms and 1 oxygen atom. Substances have different properties because they are made of different types and numbers of atoms that repeat.

For example, water and ethanol are both clear liquids, but they have different properties such as boiling point, density, and flammability. This is because water is made of H2O groups, while ethanol is made of C2H6O groups.

The different types and numbers of atoms affect how the molecules interact with each other and with other substances, resulting in different properties. Therefore, to explain why two substances have different properties, we need to look at their chemical formulas and see how their atoms differ.

Hope this helps, and have a great day! =)

The rate law and the rate law constant for the following reaction: bro3 5br 6h -> 3br2 3h2o is 1.5 × 10-3 M/S.

This means that the molecularity and order of the reaction with regard to [Br] are 5 and 1, respectively. The rate of bromine emergence is related to the rate of bromide ion evaporation in the reaction "BrO 3(-)(aq) + 5Br(-) + 6H(+) rarr 3Br 2 + 3H 2O." The reaction rate for the reaction A->B is increased by 8 times when the concentration of both reactants is doubled, while the reaction rate is only doubled when the concentration of B is doubled. If there are solely saturated chemicals present, it turns reddish-brown. By gradually adding bromine solution until the first reddish-brown hue appears, you may gauge how unsaturated a compound is. The unsaturation increases as more bromine solution is needed.

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Answer:

hmmm

Explanation:

Answer:

Explanation:

Here, we want to balance the equation of the reaction

To do this, we ensure that the atoms of each of the elements on both sides of the reaction is the same

We have that as follows:

Thus, what we will be having as the coefficient of oxygen is 13

Answer:

5l NO

2

at STP

No. of molecules=

22.4

5

mol=

22.4

5

×N

A

molecules

A) 5ℊ of H

2

(g)

No. of moles=

2

5

mol=

2

5

×N

A

molecules

B) 5l of CH

4

(g)

No. of moles of CH

4

=

22.4

5

mol=

22.4

5

N

A

molecules

C) 5 mol of O

2

=5N

A

O

2

molecules

D) 5×10

23

molecules of CO

2

(g)

Molecules of 5l NO

2

(g) at STP=5l of CH

4

(g) molecules at STP

Therefore, option B is correct.

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Answer:

524g CO2

Explanation:

Just took the quiz

At a particular temperature, H2(g)+I2(g)2HI(g) equals 64. H2 and HI have heterogenous equilibrium concentrations of 2 and 16 mollit-1, respectively.

Second order in NO and first order in O2 is the reaction 2NO(g) + O2(g) 2NO2(g). The observed rate of the reaction at [NO] = 0.8 M and [O2] = 3.7 M is 0.00022022 M/s.

The concentration of the reactants is high at equilibrium if Keq is a small number (Keq1). In this instance, the reaction is in favor of reactants forming. According to Keq 1, the reactants and products are present in significant quantities.

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Answer:

41.43 mL

Explanation:

First we calculate the mass of NaOH in the original solution:

Then we calculate the volume of the diluted solution, using the grams of NaOH (that remain the same throughout the dilution process):

Answer:

Gravitational force of attraction G(f) = 2.44 x 10⁻⁷ (approx.)

Explanation:

Given:

Mass M1 = 26 kg

Mass M2 = 5.1 kg

Distance r = 0.19 m

Find:

Gravitational force of attraction G(f)

Computation:

Gravitational force of attraction G(f) = G(m1)(m2)/r²

Gravitational force of attraction G(f) = [6.67 x 10⁻¹¹](26)(5.1)/(0.19)²

Gravitational force of attraction G(f) = 8.84 x 10⁻⁹ / 0.0361

Gravitational force of attraction G(f) = 2.44 x 10⁻⁷ (approx.)

Answer:

The answer is C.2,1,2

Explanation:

The reason why the answer is C.2,1,2 is because if you put a 2 Infront of the first calcium it will be balanced with the calcium in the product side and if you put one in front of the oxygen that wiil be two and it will also be balanced with the oxygen on the product side and seeing that a 2 the coefficient is already on the product side the equation is already balanced

Answer:

C. 2,1,2

Explanation:

Ca(s) + O₂ (g) →2CaO(s)

on the reactants side:

1 Ca

2 O (because the subscript 2 counts as there being 2 O molecules. if you put a 2 in front of the O₂  that would be 2x2=4)

On the product side:

2Ca

2O

you would just need to add a 2 to the Ca on the reactants side to balance the equation.

I hope this helps!

732.806 g of CuSO4 is greater than the maximum amount of CuSO4 that can dissolve (355.25 g), 1750 mL of water would not be able to dissolve 4.6 moles of CuSO4. The solution would become saturated, and any excess CuSO4 would likely remain undissolved as a solid precipitate.

To determine if 1750 mL of water can dissolve 4.6 moles of Copper Sulfate (CuSO4), we need to consider the solubility of CuSO4 in water.

The solubility of a compound indicates the maximum amount of that compound that can dissolve in a given amount of solvent at a specific temperature. In this case, we need to compare the solubility of CuSO4 with the amount we want to dissolve.

Assuming the solubility of CuSO4 in water is 203 g/L at a given temperature, we can calculate the maximum amount of CuSO4 that can dissolve in 1750 mL (1.75 L) of water:

Maximum amount of CuSO4 = Solubility of CuSO4 * Volume of water

Maximum amount of CuSO4 = 203 g/L * 1.75 L = 355.25 g

Next, we can convert the moles of CuSO4 to grams using its molar mass of 159.61 g/mol:

Mass of CuSO4 = Moles of CuSO4 * Molar mass of CuSO4

Mass of CuSO4 = 4.6 mol * 159.61 g/mol = 732.806 g

Since 732.806 g of CuSO4 is greater than the maximum amount of CuSO4 that can dissolve (355.25 g), 1750 mL of water would not be able to dissolve 4.6 moles of CuSO4. The solution would become saturated, and any excess CuSO4 would likely remain undissolved as a solid precipitate.

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Answer:

Two positive aspects of using methane recapture systems are able to generate significant electricity. Another benefit is that the process of anaerobic digestion creates heat that can be used to warm buildings where animals are kept

Answer:  The correct answer is;

Two positive aspects of using methane recapture systems include lowering the impact on greenhouse gasses and the production of energy. Methane is a very potent greenhouse gas that is contributing to global warming. As a result, the recapturing process reduces the methane impacts of global warming by reclaiming and reusing the gas for other purposes. Recaptured methane can be stored and used to generate electricity or used as fuel to power updated vehicles and other engines on the farm. The overall benefits from this combination are reducing impacts causing global warming and lower the cost of electricity or fuel on the farm.

Explanation:  This answer has been confirmed correct.