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3 years ago

What is the volume of 220 grams of an object with a density of 55g/cm square

1 answer:

4 0

I'm assuming that you meant 55 g/cm^3. Density= $\frac{Mass}{Volume}$ . This is the definition of density. If you rearrange this equation by multiplying each side of the equation by the volume, you get: (Density)(Volume)=Mass. Divide each side by the density to get: Volume=Mass/Density. Now just plug everything in:
V=220 (grams)/55 (grams/cm^3)=<u>4 cm^3</u>

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May you please help me solve these three equations?

tatiyna

Answer:

1. 12 molecules

2. 10 grams

3. ?

Explanation:

for number one, you simply. multiblu the 02 by 6 an that is 12, the same goes for number two. now for the third one i di not know. i am sorry and i hope this helps.

5 0

3 years ago

What happens to sodium sulphate in water

kirza4 [7]

Answer:

It dissolves into the water

Na₂SO₄ + H₂O → 2Na₊_{aq} + SO₄²-_{aq}

Hope this helps :)

Have a great day !

5INGH

Explanation:

6 0

3 years ago

Cylinders of compressed gas are typically filled to a pressure of 200 bar. For oxygen, what would be the molar volume at this pr

mars1129 [50]

Answer:

$V = 0.124 \ Liters$

$V = 0.112 \ Liters$

Explanation:

From the question we are told that

The pressure of compressed gas is $P = 200 \ bar = \frac{200}{1.013}= 197.4 \ atm$

The temperature is $T = 25^oC = 25 + 273 = 298 \ K$

Generally the perfect gas equation is mathematically represented as

$PV = nRT$

substituting 0.08206 L-atm/mol-K for R and 1 mole for n

We have that

$V = \frac{1 * 0.08206 * 298 }{ 197.4}$

$V = 0.124 \ Liters$

Generally the van der Waals equation is mathematically represented as

$nRT = [P + \frac{n^2 * a }{V^2 } ][V - nb]$

=> $1 * 0.08206 *298 = [197.4 + \frac{1^2 * 1.364}{V^2 } ][V - 1 * 3.19 * 10^{-2}]$

=> $V = 0.112 \ Liters$

7 0

4 years ago

Why the compound containing calcium and chlorine is classified as an ionic compound.

Paraphin [41]

It contains metal, and non-metal. Metal gives electrons forming positive ion, non-metal takes electrons forming negative ion. So, between metal and non-metal ionic bond is formed

6 0

4 years ago

Read 2 more answers

If 30.0 g of H2SO4 reacts with 30.0 g of sodium chloride, how many grams of hydrogen chloride are produced

koban [17]

Answer:

HCl=18.7g.

Explanation: First, we ensure that the equation is balanced. Then, we convert the given grams to moles of reactant.

5 0

3 years ago