CHEMISTRY HIGH SCHOOL

Gold has a density of 19.3 g/cm3. What is the mass, in kilograms, of one cubic meter of gold?

Answers

Answer 1

Answer:

The mass of one cubic meter of gold is 19,300 kilograms.

We can use the specified density and the following formula to determine the mass of one cubic meter of gold:

Mass = Density × Volume

Given:

Density of gold = 19.3 g/cm³

Remember that when converting from cubic centimeters to cubic meters, 1 cubic meter is equal to 1,000,000 cubic centimeters.

Density = Mass / Volume

Mass = Density × Volume

Volume = 1 cubic meter = 1,000,000 cubic centimeters

Density = 19.3 g/cm³

Mass (grams) = Density × Volume = 19.3 g/cm³ × 1,000,000 cm³ = 19,300,000 g

For converting grams to kilograms, divide by 1000:

Mass (kilograms) = 19,300,000 g / 1000 = 19,300 kg

Therefore, the mass of one cubic meter of gold is 19,300 kilograms.

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Answer 2

Answer:

Answer:

Explanation:

Question:

Gold has a density of

19.3

What is the mass, in kilograms, of one cubic meter of gold?

Density:

The density of an object is a quantity derived from the relation between mass (fundamental quantity) and volume (derived quantity). No matter the size of the object, its density will be the same because it is a constant property that is only varied when changing the mass or volume of the object. There are other factors that affect density such as temperature and pressure.

Data:

Volume:

Density:

19.3

Equation:

The equation to find the mass of the gold is given...

See full answer below.

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Density: Definition, Formula & Practice Problems

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Number of electrons in the outer ring of bromine

Answers

Simple,

looking at the periodic table..

1s2,2s2,2p6,3s2,3p6,4s2,3d10,4s5

Thus, there are 5 valence electrons in the outer ring of Bromine.

Suppose you wanted to dissolve 106 g of Na2CO3 in enough H2O to make 6.00 L of solution.(1) What is the molar mass of Na2CO3? (2) What is the molarity of this solution?

Answers

The molarity of the solution is the ratio of moles of solute to the volume of the solution in L. The molar mass of sodium carbonate is 106 g/mol and molarity is 0.167 M.

What is molar mass?

Molar mass is the mass of the compound that is given by the addition of the atomic mass of the individual atom present in the compound with respect to their stoichiometry coefficients.

The molar mass (M) of sodium carbonate can be given as,

$\rm M(Na_(2)CO_(3)) = 2M(Na)+M(C)+3M(O)$

Here mass of sodium = 23, carbon = 12 and oxygen = 16

Substituting values of the atomic mass we get:

$\begin{aligned} &=2(23)+12+3(16)\n\n&=46+12+48\n\n&=106 \;\rm g/mol\end{aligned}$

Hence, the molar mass of sodium carbonate is 106 g/mol.

Now molarity of sodium carbonate can be estimated as:

$\begin{aligned}\rm Molarity &= \rm (mass)/(\rm molar \; mass * Volume)\n\n&= (106)/(106 * 6)\n\n&= 0.16 \;\rm M\end{aligned}$

Therefore, 106 g/mol is the molar mass and 0.16 M is the molarity of sodium carbonate.

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M(Na2CO3)=2M(Na)+M(C)+3M(O)
=2(23)+12+3(16)
=46+12+48
=106 g/mol
the molar mass of Na2CO3 is 106 g/mol
m=106g M=106 g/mol n=m/M
n=m/M n=106/106 n=1mol

Which of the following would most likely result in an increase in reaction rate? placing the reactants on a hotplate placing the reactants in an ice bath
placing the products in an ice bath

Answers

Answer:

placing the reactants on a hot plate

Explanation:

If the temperature goes up, the reaction rate will increase. Because the particle will move faster and makes the kinetic energy larger.

How many moles of atoms are in 2.00 g of 13c?

Answers

There are 0.154 moles of atoms in 2.00 g of carbon-13.

Further Explanation:

Moles, Atomic mass and Molecular mass

1 mole of a pure substance contains a mass that is equal to the relative atomic mass or molecular mass of the substance.

Therefore; molar mass is given as grams per mole of a substance

Hence;

Molar mass = mass of a substance/ Number of moles

g/mol = g /mole

Thus;

M = m/n; where M is the molar mass, m is the mass and n is the number of moles

From this relationship we can therefore, calculate mass by multiplying the number of moles by molar mass of a substance.

That is; Mass = moles x molar mass

To calculate number of moles;

We have; n = m/M

Number of moles = Mass of the substance/ Molar mass

In our case;

Mass = 2 g of Carbon-13

Molar mass = 13.0 g/mol

Since; Number of moles = Mass/ molar mass

Thus;

Moles = (2.0 g)/ (13.0 g/mol)

= 0.154 moles

Keywords: Moles, Molecular mass, relative atomic mass

Learn more about:

Relative atomic mass: brainly.com/question/11096711
Moles calculation: brainly.com/question/9709257
Molar mass: brainly.com/question/8992028

Level: High school

Subject: Chemistry

Topic: Moles

Sub-topic: Moles, molecular mass and mass of a pure substance.

What 2 tools do we use to measure volume?

Answers

Answer:

Explanation:

what are the answer choices? there are multiple tooks

Although wave power does not produce pollution, some people may not want to invest in it because it is _____.

Answers

Answer:

Prone to storm damage and limited to particular areas of the ocean

Explanation:

Hello,

Even when the wave power is beneficent towards the environment care, it has a notable disadvantage when high energy waves are took by the energy stations by cause of electrical failures which lead to the station breakdown. On the other hand, there are hard-to-access areas in the ocean which restricts the enforcement of this type of energy.

Best regards.

The correct answer for the question that is being presented above is this one: "Although wave power does not produce pollution, some people may not want to invest in it because it harms marine life and its difficult to mountain it also disturbs the route of the ships."

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