10/24/21

Theoretical yield question please help

Calculate the theoretical yield for this experiment knowing that you are reacting 2.00 grams of CuCl2*2H2O (MM = 170.5 g/mol) with a certain mass of aluminum. The reaction is represented by: 3... more

09/01/21

One component of a metal sculpture consists of a solid cube with an edge of length 31.3 cm. The alloy used to make cube has a density of 7190kg/m^3. Find the cube's mass.

Please help me work out this problem. I've looked at similar problems here but don't understand m^3. I don't know what it is and what it accounts for/ changes. The farthest I've gotten in the... more

05/31/21

Which reactant will be left over if 3.00 g of iron reacts with 7.50 g of sulfur?

If 3.00 g of iron reacts completely 4.72 g of FeS is produced.If 7.50 g of sulfur reacts completely 20.56 g of FeS is produced.

03/26/21

chem help please

What is the mass in grams of a 4.7 L sample of nitrogen gas at 4.5oC when the pressure is 590.9 mm Hg?Answer value

03/26/21

chem help please

A 47.8 mg sample of butane (C4H10) gas at 333.2 K occupies a volume of 5.22 mL, what is the pressure in psi?

03/25/21

Consider the reaction: 2HCl(aq) + Ba(OH)2(aq) → BaCl2(aq) + 2H2O(l) ΔH = -118 kJ

a) Calculate the heat (in kJ) released (make sure to use the correct sign in your answer) when 106.7 mL of 0.365 M HCl is mixed with excess Ba(OH)2.b) How many grams of barium hydroxide are... more

03/12/21

Please help me !

Cyanogen gas, C2N2, has been found in the gases of outer space. It can react with fluorine to form carbon tetrafluoride and nitrogen trifluoride.C2N2(g) + 7F2(g) → 2CF4(g) + 2NF3(g)How many moles... more

03/07/21

What volume of oxygen gas is required to react completely with 2.07 mol of hydrogen sulfide according to the following reaction at 0°C and 1 atm?

hydrogen sulfide (g) + oxygen(g)water (l) + sulfur dioxide(g)

03/05/21

If 200.81 grams of H 2 O are reacted, how many moles of Ca(OH) 2 will be produced?

please show all work and solution

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