2 years ago

What is the volume of 3.5 moles of chlorine gas at standard temperature and pressure (STP)? (3 points)

Chemistry

1 answer:

777dan777 [17]2 years ago

3 0

Answer:

State any two differences between acute diseases and chronic diseases.

Explanation:

State any two differences between acute diseases and chronic diseases.

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How many significant figures will be in the final answer of this calculation? 20.2 + 3.10 - 0.09687 = ________

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There will be seven characters so the answer is e

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3 years ago

10. A small gold nugget has volume of 0.87 cm3. What is its mass if the density of gold is 19.3 g/cm3?

bulgar [2K]

Answer:

16.791 grams

Explanation:

The density formula is:

$d=\frac{m}{v}$

Rearrange the formula for m, the mass. Multiply both sides of the equation by v.

$d*v=\frac{m}{v}*v$

$d*v=m$

The mass of the gold nugget can be found by multiplying the density and volume. The density is 19.3 grams per cubic centimeter and the volume is 0.87 cubic centimeters.

$d= 19.3 g/cm^3\\v-0.87 cm^3$

Substitute the values into the formula.

$m=d*v$

$m= 19.3 g/cm^3*0.87 cm^3$

Multiply. Note that the cubic centimeters, or cm³ will cancel each other out.

$m=19.3 g*0.87$

$m=16.791 g$

The mass of the gold nugget is 16.791 grams.

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3 years ago

C3Hs + O2 = Co2 +H20

telo118 [61]

Answer:

algabra

Explanation:

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3 years ago

How many atoms of Kr (Krypton) are in a balloon that contains 2.00 mol of Kr? (4)

Svetllana [295]

Answer:

$atoms= 1.204x10^{24}atoms$

Explanation:

Hello!

In this case, according to the Avogadro's number, it is possible to compute the atoms of Kr in 2.00 moles as shown below:

$atoms=2.00mol*\frac{6.022x10^{23}atoms}{1mol} \\\\atoms= 1.204x10^{24}atoms$

Best regards!

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