107 Answered Questions for the topic Moles
14d
I keep getting lost on this question: In a combination reaction, 1.54 g of lithium is mixed with 6.56 g of oxygen.....
a) Which reactant is present in excess? I got Lithium being the LR. b) How many moles of the product are formed?I got 3.32 g Li2Oc) After the reaction, how many grams of each reactant and product...
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16d
In a combination reaction, 1.62 g of lithium is mixed with 6.87 g of oxygen. Answer a, b, and c. I am lost.
a) Which reactant is present in excess?b) How many moles of the product are formed?c) After the reaction, How many grams of each reactant and product are present?Blank g LiBlank g O2Blank g LI2O
24d
How many atoms are in 0.188 mol of Na?
How many atoms are in 0.188 mol of Na? (Show your work with unit conversions)
26d
Potassium nitrate decomposes on heating, producing potassium oxide and gaseous nitrogen and oxygen: 4KNO3(s) → 2K2O(s) + 2N2(g) + 5O2(g) to produce 71.8 kg of O2, how many...
a) Moles of KNO3 must be heated?b) Grams of KNO3 must be heated?
01/11/21
Chemistry Please Help!
Liquid nitroglycerine (C3H5(NO3)3) is a powerful explosive. When it detonates, it produces a gaseous mixture of nitrogen, water, carbon dioxide, and oxygen. a) What is the theoretical yield of...
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01/07/21
how many liters of H2 gas are needed to form 35.5 grams of NH3?
Given N2+3H3=2NH3 , how many liters of H2 gas are needed to form 35.5 grams of NH3?
Moles Chemistry
12/19/20
How many molecules are present in 25.00 g of water
Pls help idk how to do this
12/17/20
Balancing Chemical Equations and Moles
Write a balanced chemical equation for the following reaction : decasulfide tribromide reacts with carbon to form bromine gas and carbon sulfide Once you have written a balanced chemical question,...
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05/11/20
General Chemistry
Ca(OH)2 + 2HBr ---> CaBr + 2H2OIf 4 moles of Ca(OH)2 & moles of HBr was mixed1) what is the limiting reagent2) the number of moles CaBr2 produced3) the grams of CaBr2 produced
05/02/20
Calculate mass in g of Cu(OH)2 left behind after incomplete heating?
12.07g of CuSO4*5H2O is reacted with enough NaOH to completely precipitate Cu(OH)2. The Cu(OH)2 is not heated long enough, so exactly 35.27 percent of Cu(OH)2 is converted to CuO. How much Cu(OH)2...
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General Chemistry
The combustion of propane C3H8 is shown belowC3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g) If this reaction was performed with 3 moles of propane and 10 moles of oxygen, calculate the moles of...
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04/27/20
General Chemistry Limiting Reagent
The combustion of propane C3H8 is shown belowC3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g) If this reaction was performed with 3 moles of propane and 10 moles of oxygen, Identify the limiting reagent
Moles
04/24/20
Grams of Calcium Fluoride
Calcium fluoride (CaF2) is often used as the source of fluoride ions (F–) in drinking water to prevent tooth decay. The question is: How many grams of calcium fluoride must be added to a 6.00x108...
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04/21/20
What is the mass of 3.01 x 10²² molecules of carbon dioxide at STP?
using dimensional analysis
04/21/20
What volume, in liters, at STP, is occupied by 3.30 X 10²³ molecules of oxygen gas?
using dimensional analysis
04/20/20
calculating mass/volume at STP
1) What is the mass of 75.0 L of methane gas (CH₄) measured at STP?2) What volume, in liters, will be occupied by 48.8 g of helium gas at STP?3) What volume, in liters, at STP, is occupied by 3.30...
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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
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
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...
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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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