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7. What is the molar mass, in grams,...
please show how to calculate molar mass, and how to calculate mole from molar mass..please will...
please show how to calculate molar mass, and how to calculate
mole from molar mass..please will give a thumbs up
11. What is the percent water in lithium nitrate trhydrate? (Show work for credit) 12. In another experiment, the mass of a hydrate was found to be 2.7090 grams. After heating, the anhydrous sample had a mass of 1.8820 grams. Answer the folowing and show al work for credit a. What was the mass of water lost? b. How many...
7. Consider a 100.0 grams of ammonium sulfide (10 points) (a) Write the Chemical formula of...
7. Consider a 100.0 grams of ammonium sulfide (10 points) (a) Write the Chemical formula of ammonium sulfide: (NH4)2S (b) What is the molar mass of ammonium sulfide: (c) Find the moles of the compound (formula units) present in 100.0 grams of ammonium sulfide: (d) Find the moles of ammonium ions present in 100.0 grams of ammonium sulfide: (e) Find the moles of hydrogen atoms present in 100.0 grams of ammonium sulfide:
Exact mass of sodium bicarbonate: 2.110g Molar mass of sodium bicarbonate: 84.007 g/mol Molar mas...
Exact mass of sodium bicarbonate: 2.110g
Molar mass of sodium bicarbonate: 84.007 g/mol
Molar mass of sodium acetate: 82.034 g/mol
After you have recorded and any other glassware you have used. All waste can go down the sink. the mass of the beaker after the reaction, you may rinse out the beaker 10. CALCULATIONS: a) Rewrite the balanced chemical equation here Calculate the theoretical amount of sodium acetate that should be formed in the reaction (follow steps 1-3 below). b)...
please help me answer these questions,the name of the hydrate used is filled in on page...
please help me answer these questions,the name of the
hydrate used is filled in on page 1(CaSO4•H2O)
Lab 09 - Percent of Water in a Hydrate Post-Lab Questions Name Date Instructor Section 1. What is the name of the hydrate that you used in this experiment? Casoy H2O 2. What is the formula of the hydrate that you used in this experiment? 3. From its formula, what is the percentage of water in your hydrate? This is your theorectical value....
Next you convert grams to moles using the molar mass of the starting material in this case coal. I'm going to chang...
Next you convert grams to moles using the molar mass of the starting material in this case coal. I'm going to change the number up slightly so that I don't give away the answers but the final answer we get will be close to the correct answer to the original question. The formula for coal is C135H96O9NS. On anxam that formula will be given to you. Calculate the molar mass from the formula and use the molar mass as a...
1. determine the molar mass of aluminum perchlorate in units of grams per mole. 2. what...
1. determine the molar mass of aluminum perchlorate in units of grams per mole. 2. what is the mass (in grams) of 3.25 moles of elemental nitrogen? 3. how many molecules are found in 18.0 g of carbon dioxide? 4. A 170.00 g sample of an unknown compound want to UC Davis for elemental analysis. The results stated the unknown common consist of 29.84% sodium, 67.49% chromium, and 72.67% oxygen. Find the Paracle formula of this identified compound.
please show working too on how to get molar mass for hydrate, anhydrous, and water 9....
please show working too on how to get molar mass for hydrate,
anhydrous, and water
9. The mass of a test tube and hydrate was 35 2755 grams. The mass of the empty test tube was 23.7726 grams. The mass of the anhydrous salt and test tube was 31.0035 grams a. Find the mass of the original hydrate Show work for credit) b. Find the mass of the water lost after heating (Show work for credit) c. What was the...
7. A compound contains 30.4 g of nitrogen and 69.6 g of oxygen by mass. What...
7. A compound contains 30.4 g of nitrogen and 69.6 g of oxygen by mass. What is the chemical formula of this compound? 8. How many molecules of H,O (M.w. 18 g/mol) are there in 355 grams of H,O? How many hydrogen atoms are in 355 grams of HO?
INTRODUCTION In week one, we studied the imortance of measurements in chemistry and conversions between systems,...
INTRODUCTION In week one, we studied the imortance of measurements in chemistry and conversions between systems, such as the imperial system and the metric system. There are other conversions used between moles (mol). toms, and grams (g). In the laboratory balances are used to measure the amount of a substance. However, case chemical reactions take place when particles interact, chemists need to be able to relate the mass of a substance to the number of articles present Therefore, the ability...
A compound contains only carbon, hydrogen, and oxygen. Combustion of 18.92 g of the compound yields 27.73 g of CO2 and...
A compound contains only carbon, hydrogen, and oxygen. Combustion of 18.92 g of the compound yields 27.73 g of CO2 and 11.35 g of H2O. The molar mass of the compound is 90.078 g/mol. *Each part of this problem should be submitted separately to avoid losing your work* 1. Calculate the grams of carbon (C) in 18.92 g of the compound: grams 2. Calculate the grams of hydrogen (H) in 18.92 g of the compound. grams 3. Calculate the grams...
please show how to calculate molar mass, and how to calculate
mole from molar mass..please will give a thumbs up
11. What is the percent water in lithium nitrate trhydrate? (Show work for credit) 12. In another experiment, the mass of a hydrate was found to be 2.7090 grams. After heating, the anhydrous sample had a mass of 1.8820 grams. Answer the folowing and show al work for credit a. What was the mass of water lost? b. How many...
7. Consider a 100.0 grams of ammonium sulfide (10 points) (a) Write the Chemical formula of ammonium sulfide: (NH4)2S (b) What is the molar mass of ammonium sulfide: (c) Find the moles of the compound (formula units) present in 100.0 grams of ammonium sulfide: (d) Find the moles of ammonium ions present in 100.0 grams of ammonium sulfide: (e) Find the moles of hydrogen atoms present in 100.0 grams of ammonium sulfide:
Exact mass of sodium bicarbonate: 2.110g
Molar mass of sodium bicarbonate: 84.007 g/mol
Molar mass of sodium acetate: 82.034 g/mol
After you have recorded and any other glassware you have used. All waste can go down the sink. the mass of the beaker after the reaction, you may rinse out the beaker 10. CALCULATIONS: a) Rewrite the balanced chemical equation here Calculate the theoretical amount of sodium acetate that should be formed in the reaction (follow steps 1-3 below). b)...
please help me answer these questions,the name of the
hydrate used is filled in on page 1(CaSO4•H2O)
Lab 09 - Percent of Water in a Hydrate Post-Lab Questions Name Date Instructor Section 1. What is the name of the hydrate that you used in this experiment? Casoy H2O 2. What is the formula of the hydrate that you used in this experiment? 3. From its formula, what is the percentage of water in your hydrate? This is your theorectical value....
Next you convert grams to moles using the molar mass of the starting material in this case coal. I'm going to change the number up slightly so that I don't give away the answers but the final answer we get will be close to the correct answer to the original question. The formula for coal is C135H96O9NS. On anxam that formula will be given to you. Calculate the molar mass from the formula and use the molar mass as a...
please show working too on how to get molar mass for hydrate,
anhydrous, and water
9. The mass of a test tube and hydrate was 35 2755 grams. The mass of the empty test tube was 23.7726 grams. The mass of the anhydrous salt and test tube was 31.0035 grams a. Find the mass of the original hydrate Show work for credit) b. Find the mass of the water lost after heating (Show work for credit) c. What was the...
7. A compound contains 30.4 g of nitrogen and 69.6 g of oxygen by mass. What is the chemical formula of this compound? 8. How many molecules of H,O (M.w. 18 g/mol) are there in 355 grams of H,O? How many hydrogen atoms are in 355 grams of HO?
INTRODUCTION In week one, we studied the imortance of measurements in chemistry and conversions between systems, such as the imperial system and the metric system. There are other conversions used between moles (mol). toms, and grams (g). In the laboratory balances are used to measure the amount of a substance. However, case chemical reactions take place when particles interact, chemists need to be able to relate the mass of a substance to the number of articles present Therefore, the ability...
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