139 Answered Questions for the topic Moles

Moles Chemistry So2

04/02/20

How many moles are there in 1.204 x 1023 representative particles of SO2? Show work.
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03/25/20

Chemistry Question Moles and Molecules

Seven moles of calcium hydroxide has_____ number of Molecules i was told the answer is 42.16*10^23 how did they get that as the answer? Thank you
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12/10/19

Calculate Moles and Volume

Given the following amounts of gasses, calculate the number of moles of each gas. Calculate the volume of each amount of gas would occupy at 100°C and 15atm. a. 5.8g NH₃b. 48g O₂c. 10.8g He
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Moles Chemistry Ions

11/24/19

If I mix 25.0mL of 3.00 M Lead (II) Nitrate with 45.0mL of 2.50 M Potassium Chloride.

What is the final number of moles of potassium ion present? What is the final concentration of potassium ion? What is the concentration of the excess ion at the end of the reaction?I know the... more
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Moles Chemistry

10/22/19

Help me solve this question

State the equality: how many moles of uranium are in 41.34 grams of uranium?
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Moles Chemistry

06/21/19

What is the maximum Mass that can be produce from a mixture of 2.00*10³g N2 and 8.00*10⁴g H2
How can will find the maximum Mass of ammonia
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02/27/19

How many grams of nitrogen are there in a sample of nitrogen that contains 4.0 moles of nitrogen atoms?
Plz help this is due tomorrow and I keep getting stuck on this problem !!!
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12/04/18

Mg(s) + 2 HCl(aq) --> MgCl2(aq) + H2(g) how many moles of Mg are there? how many moles of hydrogen gas?

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09/11/18

Molarity Written Response
Angelica made 100mL of a 3.5M salt solution. She wanted to dilute this solution to make 100mL of a 2.1M solution. She calculated that she needed 60mL of her stock solution. She added the 60mL to... more
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Moles

08/09/18

when you have an equation and you are doing moles.. do you add the number infront of the compund(balancing) for the rmm
i just got confused when you are doing a calculation and there is the balancing do you multiply the coumpound ram by the number?
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Moles Chemistry

05/06/18

Calculating mole fraction in a gas mixture
A 6.00 L tank at 9.9 C is filled with 8.35 g of carbon monoxide gas and 13.0 g of sulfur hexafluoride gas. You can assume both gasses behave as ideal gasses under these conditions. Calculate the... more
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Moles Chemistry

05/06/18

Calculating mole fraction in a gas mixture
A 8.00 L tank at 28.5 C is filled with 19.2 g of carbon dioxide gas and 8.08 g of carbon monoxide gas. You can assume both gasses behave as ideal gasses under these conditions. Calculate the mole... more
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Moles Chemistry

05/05/18

Calculating mole fraction in a gas mixture
a 6.00 L tank at -28C is filled with 5.35 g of sulfur hexafluoride gas and 2.54g of sulfur tetrafluoride gas. You can assume both gasses behave as ideal gasses under these conditions. Calculate the... more
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05/03/18

What is the volume of 2.3 mol sample of Fluorine at STP?
What is the volume of 2.3 mol sample of Fluorine at STP?
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Moles

04/24/18

how many mL of a 0.350 M LiOH solution contains 0.0171moles of LiOH
how do you get started, with what formula? 
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Moles

03/07/18

What is the formula for Barium oxide?
Formula for Barium oxide?  
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03/06/18

Do moles change with volume?
Does increasing or decreasing volume change the moles in a solution, or does that just affect the concentration?   If I have 0.035711 moles in 100mL and I'm asked how many moles in 5mL of this... more
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Moles

02/28/18

How many moles of molecules are in 1 million molecules of Potassium cyanide?
i need help
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Moles

12/18/17

Write a balance chemical reaction for this and explain why this words using the solubility tables
Vinegar (C2H4O2) is added to kettle to remove lime (CaCo3) bulid up 
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12/06/17

Can someone help me with Mole Conversion?
I'm struggling to understand on how to do this, I'm currently trying to use dimensional analysis to solve the problems, please help.   1. What is the mass of 12.5 moles of silicon?   2. How... more
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11/28/17

Empirical & Molecular formulas of compounds
Cannizzaro determined that a certain compound of carbon and oxygen had a molecular mass of 44.0 u. This meant that a certain volume of this gaseous compound weighed 44.0 times as much as the same... more
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Moles

11/20/17

Determine the number of chromium atoms in 46.2 gram of chromium oxide
Formula is Cr2O3
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11/14/17

determine the mass of each sample
1.16 mmol carbon disulfide
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11/14/17

determine the mass of the sample
1.48 mol carbon tetrafluoride 
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Moles

11/12/17

how many moles of oxygen are in 6.23 moles of Cr(C2H3O2)3?
please show your work so i can understand. 
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