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horrorfan [7]
3 years ago
9

What is the mass of 50 molecules (HCO2H)?

Chemistry
1 answer:
SCORPION-xisa [38]3 years ago
3 0

Answer:

2300

Explanation:

The mass of 1 molecule of HCOOH = 1+12+16+16+1=46

So, mass of 50 molecules is 50×46=2300

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A 1300 mL sample of gas with a molar mass of 71.0 g/mol at STP has what density?
Blizzard [7]

Answer:

0.055g/mL

Explanation:

Data obtained from the question include:

Molar Mass of the gass sample = 71g/mol

Volume of the gas sample = 1300 mL

Density =?

The density of a substance is simply mass per unit volume. It is represented mathematically as:

Density = Mass /volume.

With the above equation, we can easily obtain the density of sample of gas as illustrated below:

Density = 71g / 1300 mL

Density = 0.055g/mL

Therefore, the density of the gas sample is 0.055g/mL

6 0
3 years ago
HClO3 + NH3 Right arrow. NH4+ + ClO3– Which is a base-conjugate acid pair?
romanna [79]

Answer:

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Explanation:

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3 years ago
Write a word equation for the combustion of propane???<br> HELP????
frutty [35]

Answer:

1 mole of propane combines with 5 moles of oxygen gas to produce 3 mole of carbon dioxide and 4 moles of water.

Explanation:

The word equation for the combustion of propane can be obtained from the chemical equation;

      C₃H₈   +    5O₂    →   3CO₂   +   4H₂O  

The word equation is therefore:

 1 mole of propane combines with 5 moles of oxygen gas to produce 3 mole of carbon dioxide and 4 moles of water.

For such a combustion reaction, carbon dioxide and water are produced in the process.

8 0
3 years ago
When nonpolar solutes are placed in water, the hydrogen bonding network of water is disrupted, and there are fewer ways for wate
satela [25.4K]

Answer:  increase in entropy

Explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from  an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

\Delta S is positive when randomness increases and \Delta S is negative when randomness decreases.

When the non polar solutes are placed in water, the hydrogen bonding network of water is disrupted, and there are fewer ways for water to hydrogen-bond with itself. That means the water molecules are more randomly arranged and thus have more entropy and thus \Delta S is positive.                

5 0
3 years ago
For the problem: Mg (s) + O₂ (g) ➞ MgO (g) if 4.3 g of magnesium reacts with 83 g of oxygen (O₂), which is the limiting reagent?
Anit [1.1K]

Explanation:

hope this can help youuu

3 0
3 years ago
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