Newest Chemistry Conversion Questions | Wyzant Ask An Expert

Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water H2O and carbon dioxide CO2 chemically react to form the simple sugar glucose... more

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Chemistry Conversion Chemistry Chemistry Measurement Word Problem

03/07/18

A substance contains 35.0 g nitrogen, 5.05 g hydrogen, and 60.0 g of oxygen. How many grams of nitrogen are there in a 150-g sample of this substance?

help! need help with this

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Chemistry Conversion

03/07/18

How many grams of chromium are in 17.5 g of K2Cr2O7?

chemistry.. help!

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Chemistry Conversion

02/16/18

What is the volume, in cubic centimeters, of an ice cube that has a mass of 27g.

Ice cube is 0.92g/ml

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Chemistry Conversion

02/09/18

A reaction of 44.3 g of Na and 52.3 g of Br2 yields 53.5 g of NaBr. What is the percent yield?

i need to find the percent yield of the above equation..

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Chemistry Conversion

02/07/18

How many atoms in 4.44(10^27) P4 O10 molecules?

chemistry

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Chemistry Conversion

02/01/18

Conversion on chemistry

which of the following is the coldest temprature 40 C or 40 F?

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Chemistry Conversion Chemistry

02/01/18

vitamin C (absorbic acid) contains 40.92% C, 4.58%H , and 54.50 O ?? what is the empirical formula for vitamin C

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Chemistry Conversion

02/01/18

A solution is 15% salt by mass. It's density is 1.3 g/mL. How many liters of the solution would be needed I order to obtain 32 g of salt?

Show conversion factors used that lead to your answer.

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Chemistry Conversion

01/28/18

A graduated cylinder contains 25.0 mL of water. new water level after 31.6 g of silver metal with a density of 10.5 g/mL is submerged in the water?

A graduated cylinder contains 25.0 mLof water. What is the new water level after 31.6 gof silver metal with a density of 10.5 g/mLis submerged in the water?

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Chemistry Conversion

01/22/18

3. A metal weighing 7.101 g is placed in a graduated cylinder containing 33.0 mL of water. The waterlevel rose to the 37.4 mL mark.a) Calculate the density of the metal (in g/mL).b) If you were to... more

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Chemistry Conversion

01/22/18

If this same volume of liquid had been chloroform (d = 1.48 g/mL), how much would it weigh?

2. A 12.2 mL sample of liquid was found to have a mass of 10.4 g.a) Calculate the density of this liquid (in g/mL).

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Chemistry Conversion

01/17/18

The volume of a gas is directly related to the temperature of the gas. At 30 degrees Celsius a certain gas has a volume of 125 cubic centimeters. What will the

I am looking for the equation for this problem.

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Chemistry Conversion Chemistry Unknown Compound

01/10/18

What is the empirical formula of the unknown compound?

A 0.464g sample of a compound containing the elements carbon, hydrogen, oxygen and sulphur was burned completely, yielding 0.969g CO2 and 0.198g H2O. In a separate experiment, all the sulphur in... more

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Chemistry Conversion Chemistry

01/10/18

What is the average volume in mL occupied by one mol of DNA molecules and one DNA molecule?

A sample of DNA was found to have a density of 1.10 g/cm3 and a molecular weight of approx. 3.04 x 108 g/mol. What is the average volume in mL occupied by one mol of DNA molecules and one DNA... more

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Chemistry Conversion Science Chemistry Chemistry Lab

12/17/17

Can you tell from the formula of a substance whether the bonds are likely to be ionic or molecular in nature?

is it possible, or is it not? WHY?

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Chemistry Conversion Chemistry Chemistry Measurement Word Problem

12/13/17

Mass of a Solute

The mass of solute per 100 mL of solution is abbreviated as (m/v). Mass is not technically the same thing as weight, but the abbreviation (w/v) is also common. How many grams of sucrose are needed... more

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Chemistry Conversion

12/12/17

Which of the following bronsted lowry acids does not act as a strong acid when dissolved in water?

A( HCLO4 B) HCN C) HCL D) H2SO4

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Chemistry Conversion Chemistry Chemical Reactions Chemistry Lab

12/12/17

A Zn wire and Ag/AgCl reference electrode (E° = 0.197 V) are placed into a solution of ZnSO4.

A Zn wire and Ag/AgCl reference electrode (E° = 0.197 V) are placed into a solution of ZnSO4. The Zn wire is attached to the positive terminal and the Ag/AgCl electrode is attached to the negative... more

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Chemistry Conversion

12/11/17

i need to know how to solve this chem question!?

Gold costs $1250/oz. how many atoms of gold can you buy with two pennies. 1oz = 31.1g

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Chemistry Conversion Chemistry Moles Mole Concept

11/28/17

Empirical & Molecular formulas of compounds

Cannizzaro determined that a certain compound of carbon and oxygen had a molecular mass of 44.0 u. This meant that a certain volume of this gaseous compound weighed 44.0 times as much as the same... more

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Chemistry Conversion Chemistry Conversion Moles

11/12/17

moles chemistry question

How many moles of gold atoms do 4.50x10^24 gold atoms constitute?

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a gas occupies a volume of 140mL ate 35. Celsius and 97kPa. what is the volume of the gas at STP?

What is the heat capacity of a 30.0 gram sample of matter that cools off to 25c from 100c when 100.0 grams of 20c water are added to it?

How much energy needs to be removed from 25 g of 110 °C degree steam to turn it into -10 °C ice?

What mass of simple sugar glucose is produced by the reaction of 1.5g of water?

A substance contains 35.0 g nitrogen, 5.05 g hydrogen, and 60.0 g of oxygen. How many grams of nitrogen are there in a 150-g sample of this substance?

How many grams of chromium are in 17.5 g of K2Cr2O7?

What is the volume, in cubic centimeters, of an ice cube that has a mass of 27g.

A reaction of 44.3 g of Na and 52.3 g of Br2 yields 53.5 g of NaBr. What is the percent yield?

How many atoms in 4.44(10^27) P4 O10 molecules?

Conversion on chemistry

vitamin C (absorbic acid) contains 40.92% C, 4.58%H , and 54.50 O ?? what is the empirical formula for vitamin C

A solution is 15% salt by mass. It's density is 1.3 g/mL. How many liters of the solution would be needed I order to obtain 32 g of salt?

A graduated cylinder contains 25.0 mL of water. new water level after 31.6 g of silver metal with a density of 10.5 g/mL is submerged in the water?

Density, Volume and Mass

If this same volume of liquid had been chloroform (d = 1.48 g/mL), how much would it weigh?

The volume of a gas is directly related to the temperature of the gas. At 30 degrees Celsius a certain gas has a volume of 125 cubic centimeters. What will the

What is the empirical formula of the unknown compound?

What is the average volume in mL occupied by one mol of DNA molecules and one DNA molecule?

Can you tell from the formula of a substance whether the bonds are likely to be ionic or molecular in nature?

Mass of a Solute

Which of the following bronsted lowry acids does not act as a strong acid when dissolved in water?

A Zn wire and Ag/AgCl reference electrode (E° = 0.197 V) are placed into a solution of ZnSO4.

i need to know how to solve this chem question!?

Empirical & Molecular formulas of compounds

moles chemistry question

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