01/09/21
HELPPP URGENT plz covert these plz
1. 1.29 x 10^24 atoms of HF to grams 2. 3.14g of H2O to molecules3. 2.79g NH3 to atoms4. 4.90 mol Al2O3 to grams. To atoms5. 3.56g of Cu to atoms6. Mass of a sample of NO2 with 1.54 x 10^24 atoms.
01/08/21
what is 4x9xN=720
01/08/21
plz covert thesee URGENT all of them plz
convert1. 1.29 x 10^24 atoms of HF to grams2. 3.14g of H2O to molecules3. 2.79g NH3 to atoms4. 4.90 mol Al2O3 to grams. To atoms5. 3.56g of Cu to atom6. Mass of a sample of NO2 with 1.54 x 10^24...
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01/08/21
How many moles of ammonia or produce 13 moles of nitrogen reacts with an excess of hydrogen
help help help help help help help
01/08/21
How many grams of NHC will produce from 2.0 g of hydrogen gas
help help help help help help
01/08/21
Determine the percent by mass of S in Al2(SO4)3
Determine the percent by mass of S in Al2(SO4)3
I need to pass mathhh please help
Laura deposits $8000 into an account that pays Simple interest at a rate of 2% per year. How much interest will she be paid in the first six years
so I need help with stoichiometry#2 is the lesson we are on if anyone could please explain. the problem is down below
Sodium tetraborate is produced according to the following reaction:4H3BO3 + 2NaOH → 7H2O + Na2B4O7How many grams boric acid are needed to make 150 tons of sodium tetraborate? (Remember that 454 g =...
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01/08/21
Frank needs to make $800 to buy an iphone 12. How many 8 hour shifts should Frank work at $30 an hour to purchase the iPhone 12?
I need to write this as an equation and solve. I am not sure how to write it out.
01/08/21
Tell me how you will find the number of grams if moles are given.
Please use complete sentences.
01/08/21
Na and Cl will always react in a 1:1 ratio. Explain why that is the case.
Using the same reasoning, predict the ratio in which Ca and S will react.
01/07/21
You added substance A to a beaker of pure water and obtained a pH reading of 4. Substance A could be a(n) ____________ such as ___________. This solution has ______ than pure water
Acid; HCl; 1000 times more H+ ions Acid; HCO3-2; 1000 times more OH-- ions Acid; NH3; 1000 times more H+ ions Base; HCl; 30 times more OH-- ions Base; NH3; 1000 times more H+ ions
01/06/21
Given the equation: 4Al2O3 + 9Fe --> 3Fe3 4 + 8Al 27.5 g of Al 2O3 reacted with 8.4 g of Fe
Given the equation:4Al 2 O 3 + 9Fe --> 3Fe 3 O 4 + 8Al27.5 g of Al 2 O 3 reacted with 8.4 g of Fea) Calculate the limiting reactantb) Calculate the number of grams of Al produced.c) Calculate...
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01/06/21
General Chemistry, Kind of Related to Stoichiometry, please help! really want to learn and understand this problem
This is a General Chemistry Question:A reaction happens with 75 grams of acetic acid (C2O2H4) and an unknown metal, resulting in hydrogen gas and a solid metal with a mass of 113.4 g. What is the...
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01/03/21
Chemistry (Mass)
Medicinal formulations of calcium sometimes come in the form of a liquid. Calcium phosphate is sometimes delivered by the spoonful (15 mL). Is it accurate for the drug company to say that one...
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Creating Linear Inequalities
Lisa wants to buy some DVD’s online. Each DVD costs $11.99 and shipping for the whole order is $9.99. She has no more than $300 to spend. How many DVD’s can Lisa order without exceeding her $300...
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12/26/20
Ratio and Proportion
1.If Gary gives $40 to Charles, they will have an equal amount of money. If Charles gave $80 to Gary, the ratio of Gary's money to Charles money will be 4:1. How much money does Gary have at...
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12/19/20
Chemistry - Kinetics
Fe2+ reacted much faster than C2O42- when mixed into a reaction. What can you can do to slow down the rate of reaction of Fe2+? Explain in detail the method used to slow down the reaction rate.
How many molecules are present in 25.00 g of water
Pls help idk how to do this
12/19/20
What are some ways that companies are speeding up reactions?
I know that there could increase concentration/pressure and increase the temperature. But the question was asking for examples of ways companies speed up reactions, so I'm guessing real life examples.
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