How many moles of hydrogen molecules are needed to react with one mole of oxygen molecules?

Q: Is the mass of one mole of N2 greater than, less than, orequal to the mass of one mole of O2?

A: Given:Is the mass of one mole of N2 greater than, less than, or equal toThe mass of one mole of…

Q: How many moles of KI are in 9.06×10^24 formula units?

A: nmoles=NNAvagadro

Q: How many electrons have been removed or protons added?

A:

Q: 20. fill in the blanks in the following table for the compound carbon dioxide, CO2 Moles Molecules…

A: We know, Molecular weight of CO2 is 44 g

Q: How many moles are is 42.7 g of copper sulfate (CuSO4)?

A: Here, weight of copper sulphate (CuSO4),  w= 42.7 g Molecular weight of CuSO4, M = (atomic weight of…

Q: To eight significant figures, Avogadro's constant is 6.0221367 × 1028 mol-1. Which of the following…

A: Avogadro's constant = 6.0221367 x 1023 mol-1  To find = Correct rounding

Q: The density of iron is 8 grams per cubic centimeter. The atomic mass of iron is 56 grams per mole…

A:

Q: Hydrogen was collected over water at 21.4°C on a day when the atmospheric pressure was 741 Torr. the…

A:

Q: A person mixes a 2 quart drink into a 2 liter bottle. What percentage will the person fill the…

A: Volume: Volume is a quantity which can give the information about the space inside a three…

Q: Nine moles of sulfur dioxide, SO2, would consist of how many molecules?

A: Write the given values of this problem. Moles of sulfur dioxide=9

Q: To increase the concentration of a solution, you would O increase the amount of solute O increase…

A:

Q: Write the cell notation for a voltaic cell with the following half-reaction. Al(s) → Ae3+ 2H*(aq) +…

A:

Q: Four moles of hydrogen sulfide, H,S, would consist of how many molecules? molecules

A: Given Data Number of moles n= 4 mol

Q: A sample of oxygen gas at a pressure of 0.678 atm and a temperature of 24.1 °C, occupies a volume of…

A: Given data The pressure gas of oxygen is P1 = 0.678 atm. The volume of oxygen gas is V1 = 13.2…

Q: How much energy, in kJ, is needed to vaporize 0.2 kg of ethyl alcohol once it reaches its boiling…

A: Given data The mass of the ethyl alcohol is m = 0.2 kg = 200 g The boiling point of the ethyl…

Q: In 12.0 g of carbon, there are NA = 6.02 x 10^23 carbon atoms (Avogadro’s number). If you could…

A: Given: The value of Avogadro's number is 6.02x1023 atoms. The mass of carbon is 1.00 g. The rate of…

Q: How many milliliters of a 60% alcohol should be used to prepare 3 L of 40% alcohol? O 4,500 O 2,000…

A:

Q: What is the concentration of a solution obtained by diluting 30 mL of a 45% w/v solution to a final…

A:

Q: What is the difference between fuel-injected gasoline engines and diesel engines?

A: Diesel engine and gasoline engines are internal combustion engines which convert the chemical energy…

Q: Consider the following reaction at equilibrium. What effect will decreasing the volume of the…

A: Given data: Chemical reaction: 2H2Sg+3O2g⇌2H2Og+2SO2g

Q: Formaldehyde has the chemical formula CH2O. Calculate the number of (a) moles, and (b) CH2O…

A: Part A:

Q: The volume of a sample of oxygen gas changed from 10 mL to 11 mL as the temperature changed. Is this…

A: Solution: Givwn that The volume of a sample of oxygen gas changed from 10 mL to 11 mL as the…

Q: . The concentration of drug X in aqueous solution drops by 10% per month when stored at room…

A: The rate law or a rate equation for a chemical reaction is an equation that relates the forward…

Q: What STP volume of carbon dioxide gas is produced from the combustion of 8.70 gg of propane…

A: The volume of the propane is, ρ=mVV=mρ=8.70 g0.001 kg1 g493 kg/m3=1.76×10-5 m3

Q: What is the freezing point of a solution of 1.0 mol of glucose in 1.0 kg of water?

A: Number of moles of glucose = n = 1 mole Mass of water = 1 kg Freezing point of solution =?

Q: How many kilojoules are released by freezing 32 g of H2O?

A: The heat released during the freezing is  H = m L  where, m is the mass and L is the latent heat of…

Q: write the balanced chemical equation for P+O2=P2O5

A: 2P+52O2 = P2 O5…

Q: A tray contains 390g of ice. How much energy will be required to melt it to water? O 36.2 kcal 34.2…

A: 31.2 kcal is correct answer.

Q: The half-life of caffeine is 5.5 hours. You drink a double espresso, which contains 128 mg of…

A: Given that:No=128 mgN(t)=20 mgt1/2=5.5 h

Q: Generally the body eliminates alcohol 0.015 BAC units each hour. How many hours does the driver has…

A: Given, The body eliminates alcohol 0.015 BAC units each hour. The amount of alcohol present in…

Q: How many grams are in 5.60 x 1024 molecules of NaCI?

A: Given that                        The Molecules of the NaCl is (n) = 5.6×1024 molecules We need to…

Q: A gram is: O 10-6 kg 10-3 kg 1 kg O 103 kg O 106 kg

A: Given :- gram is equal to

Q: how many grams are in 2.70 x 10^24 molecules of P^4

A:

Q: Calculate the number of moles and atoms/molecules from the following:          a. 67.83 grams of H2O…

A: Part A. Molecular mass of H2O  is 18 g/mol. Therefore, 1 g=118 mol Hence, 67.83 g=118×67.8367.83…

Q: In Europe, nutritional information is given in kilojoules instead of nutritional calories. A packet…

A: The given data are listed below.

Q: Find the number of moles of chlorous acid in 452 g of chlorous acid.

A: The molecular formula of chlorous acid is HClO2. The molecular weight of this acid is,…

Q: Give step-by-step calculation and explanation Determine how many standard donuts a 70 kg person…

A: Given: Energy stored in donut = 280kcal Metabolic rates: Basketball = 688kcal/hr Sitting =…

Q: A 12 oz can of soda contains 40 g (or a bit less than 1/4 cup) of sugar, a simple carbohydrate. What…

A: Given:- A 12 OZ can of soda contain = 40 of sugar  Find:- chemical energy in joules, & how many…