04/05/23

Stuck on chemistry homework problems

What would be the concentration of hydroxide ions in a solution made by dissolving 10.0 g of sodium hydroxide in a solution with a final volume of 150.0 mLHow many moles of magnesium bromide would... more
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04/03/23

Solve for the enthalpy change of steam reforming methane
The steam reforming of methane occurs according to the following chemical equation: CH₄(g) + 2H₂O(g) ⇌ CO₂(g) + 4H₂(g) Use the following equations to solve for the enthalpy change of steam... more
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03/30/23

calculating enthalpy
Given the thermochemical equationsX2+3Y2⟶2XY3Δ𝐻1=−370 kJX2+3Y2⟶2XY3Δ�1=−370 kJX2+2Z2⟶2XZ2Δ𝐻2=−130 kJX2+2Z2⟶2XZ2Δ�2=−130 kJ2Y2+Z2⟶2Y2ZΔ𝐻3=−220 kJ2Y2+Z2⟶2Y2ZΔ�3=−220 kJCalculate the change in... more
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03/30/23

What is the change in enthalpy when 1.50 moles of H2 are reacted with an excess O₂ of according to the following balanced chemical reaction: 2H₂(g)+O₂(g)→2H₂O(l) ∆H=-572 kj
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03/30/23

Potassium metal reacts with water according to the following balanced equation. 2K(s)+2H2O(l)⟶2KOH(aq)+H2(g) How many moles of KOH are produced if 2963.1 moles of H2O are consumed?
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02/06/23

Step-by step procedure?
Design a detailed, step-by-step procedure for determining the effectiveness of a buffer solution Where appropriate, the procedure should describe the use of blanks and duplicate trals. Meters for... more
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01/10/23

Volume of A Drop: Water Volume 1 ML Number of Drops =15
Water Volume= 1.00Number of Drops = 15Average Drop Volume = ?
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11/23/22

Write the balanced equation for the neutralization reaction between H3PO4 and NaOH in an aqueous solution. Phases are optional.
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11/20/22

How many grams of hydrogen gas (H2) are needed to completely react with 28 grams of nitrogen gas (N2) to form ammonia (NH3) ?

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11/14/22

How many grams of solute are present in 415 mL of 0.630 M KBr?
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11/02/22

How to solve for the mass of potassium phosphate produced from 2.45 mol of potassium hydroxide

For the chemical reaction3KOH+H3PO4⟶K3PO4+3H2O3KOH+H3⁢PO4⟶K3⁢PO4+3⁢H2Owhat mass of potassium phosphate is produced from 2.45 mol of potassium hydroxide?
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10/13/22

Liquid octane (CH3(CH2)6CH3) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide (CO2) and gaseous water (H20).

Suppose 9.1 g of octane is mixed with 41.0 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Be sure your answer has the correct number of... more
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10/12/22

help with chem please
While working for a food science company, you need to analyze the energy content of a sugar substitute with the molecular formula C5H12O5.C5⁢H12⁢O5. As part of this process, you conduct a series of... more
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10/11/22

help with chemistry
3KOH+H3PO4⟶K3PO4+3H2O3KOH+H3PO4⟶K3PO4+3H2Ohow many grams of phosphoric acid, H3PO4, are needed to react completely with 43.543.5 g of potassium hydroxide, KOH?
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10/10/22

HELP I CANT FIGURE IT OUT
Combining 0.313 mol Fe2O30.313 mol Fe2O3 with excess carbon produced 13.3 g Fe.13.3 g Fe.Fe2O3+3C⟶2Fe+3COFe2O3+3C⟶2Fe+3COWhat is the actual yield of iron in moles?What is the theoretical yield of... more
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06/14/22

Determining volume
What volume of hydrogen gas is formed at 30oC, and 950 mmHg, when 5.00g of calcium reacts with 250.0 mL of 0.700M hydrochloric acid.
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05/01/22

HELP WITH GAY LUSSAC CHEM
if the pressure of a ballon is 780 torr at a room temp of 20 c whats the pressure of the balloon if the temp rises to 40 c
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04/25/22

2C2H6 + 7O2 → 4CO2 + 6H2O
i need help to get to this answer
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04/25/22

What is the pressure in atm of 6.07 moles of acetylene gas in a 56.26 L cylinder at 37oC?
solution to the problem
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