02/22/19

how does amylase breakdown starch to form maltose?
how does amylase breakdown starch to form maltose
Follows • 1
Expert Answers •1

02/22/19

A lab technician mixed a 540 540 ml solution of water and alcohol. If​ 3% of the solution is​ alcohol, how many milliliters of alcohol were​ used, and how many milliliters of water were​ used?
Follows • 1
Expert Answers •2

02/22/19

calculating maximum mass

Liquid hexane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water Suppose 6.0 g of hexane is mixed with 36.8 g of oxygen. Calculate the maximum mass of carbon dioxide... more
Follows • 1
Expert Answers •1

02/22/19

What mass of O_2 gas must be produced in order for 4.5 L of NaOH to react completely at STP?
According that H_2O reacts with Na_2O_2 according to the following equation:2Na_2O_2 + 2H_2O yields 4NaOH + 1O_2
Follows • 1
Expert Answers •1

02/22/19

How many moles of potassium chlorate are needed to form 22.4 L oxygen at STP

Follows • 0
Expert Answers •1

02/22/19

Given 134.8 grams of HCI, how many moles of MnCI2 will form?
equation: MnO2+4HCI=CI2+MnCI2+2H2Oanswer choicesa.343.08 molesb.0.92 molesc.118.32 molesd.14.79 moles
Follows • 1
Expert Answers •1

02/22/19

How many grams of CuI2 are produced when 35 moles of Cu(NO3)2 react?
equation: Cu(NO3)2+2KI=CuI2+2KNO3
Follows • 2
Expert Answers •1

02/21/19

How much will $7.25 per hour make for 28 hours
I’m trying to work at McDonald’s and I want to work once a week and for the weekends Wednesday is 4 hours and Friday 4 hours Saturday 12 and Sunday 12 so how much will that be?
Follows • 1
Expert Answers •1

02/21/19

A chemist needs 1000 liters of 30% acid solution. He has a 10% solution and a 60% solution available. How much of each should he mix to obtain his 30% solution?
Follows • 1
Expert Answers •1

02/21/19

what is the mass of lithium sulfate when 45 grams of lithium reacts with excess silver sulfate
Follows • 1
Expert Answers •1

02/21/19

Universal Gas Equation + Stoichiometry

Could someone please solve the following questions for me? Use the universal gas equation to calculate the volume of the greenhouse gas, CO2 (measured at 25°C and 101.3 kPa), that would be produced... more
Follows • 1
Expert Answers •1

02/21/19

Stoichiometry Calculation Question
N2 + 3H2 --> 2NH39.7g H2 times x/x times x/x times x/x = 55g NH3"x" options: 17 g NH3, 2 mol NH3, 1 mol NH3, 3 mol H2, 1 mol H2, 2 g H2
Follows • 1
Expert Answers •1

02/21/19

Please help me for a chemical reaction 🙏🏻
What is the chemical reaction occurs when boiling a mixture of water , flour , sugar, baking soda and vinegar ( for making homemade glue ) ?
Follows • 0
Expert Answers •1

02/21/19

Chemistry - Specific Heat Problems HELP PLS!!!!
I need to now the answer and it has to include 3 sig figs.What is the final temperature of 19.2 g of water if it absorbs 1820 J of heat and its inital temperature was 25.6ºC? 
Follows • 1
Expert Answers •1

02/21/19

Chemistry(Science)
What is the ratio of the flow rates of carbon dioxide gas (CO2) to that of oxygen (02)gas at the same temperature and pressure?
Follows • 1
Expert Answers •1

02/20/19

How to measure the amount of hydrogen gas by the amount of salt produce in the reaction of HCL and Mg in an experiment.
i am doing an experiment about the percent yeild of hydrigen gas from a solution of magnesium and hydrochloric acid but i need to find the amount of hydrogen produced but not sure how to do it. Was... more
Follows • 1
Expert Answers •1

02/20/19

Stuck on chemistry
How long it would take for the [ ] of CV to reach 4.0x10^-6 if the starting [ ] was 1.0x10^-5 and [OH] was .040 M
Follows • 1
Expert Answers •1

02/20/19

really really stuck on chemistry!!!
how much 5.00 x 10^-5 M crystal violet and KNO3 solution would you need to add with 6 ml of .0100 M NAOHbin order to observe absorbance of .200 after 60 seconds?
Follows • 1
Expert Answers •1

02/20/19

A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184 J/g K) at initial temperature 80 C. A salt weighing 5.852 g is quickly added.

A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity = 4.184 J/g K) at initial temperature 80 C. A salt weighing 5.852 g is quickly added. The salt has a... more
Follows • 1
Expert Answers •1

02/20/19

So it's 58Fe2- ?
Follows • 0
Expert Answers •1

02/20/19

What is the volume of oxygen gas (in Liters) that will be produced if 3.5 g H_2O will react at a pressure of 119 kPa and temperature of 35 degrees Celsius?

According that H_2O reacts with Na_2O_2 according to the following equation:2Na_2O_2 + 2H_2O yields 4NaOH + 1O_2
Follows • 1
Expert Answers •1

02/20/19

A gas sample is collected at 21 degrees celsius and 0.988 atm. If the sample has a mass of 4.7 g and a volume of 396 mL. What is the molar mass?
10th grade Chemistry gas law problem. Find the molar mass given the temperature and air pressure.
Follows • 1
Expert Answers •1

02/20/19

The temperature is -13 degrees celsius, the air pressure in a car tire is 2.5 atm. If the volume does not change, what will the temperature in celsius be if the pressure is 1.2 atm?
Chemistry question of gas laws, 10th grade. Find the pressure from a given temperature and air pressure.
Follows • 1
Expert Answers •1

02/20/19

A large cylinder of 5.1 g He gas has a volume of 2500 ml at 23 degrees celsius. What is the pressure in torr?
Chemistry for 10th grade question.
Follows • 1
Expert Answers •1

02/20/19

how many moles of ammonia can be produced from this?
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.