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144 Answered Questions for the topic Chemistry Conversion

Chemistry Conversion

09/28/18

If 125. mg of fluorine-18 is shipped at 10:00 A.M., how many milligrams of the radioisotope are still active after 330 min ?

 Chemistry 106, conversion is involved
Chemistry Conversion

09/18/18

what is the volume in gallons of 125 lb of gasoline the density of gas is 0.68 g/cm3

Chem equation 
Chemistry Conversion Chemistry

09/16/18

A pound of coffee beans yields 60 cups of coffee (4 cups = 1 qt). How many milliliters of coffee can be obtained from 1.0 g of coffee beans?

 That was the whole question. and my answer needs to be 4 sig digs
Chemistry Conversion

09/08/18

a vehicle gasoline has many slightly different compositions depending on local laws. however, on average it has a density of 0.737 g/ml this morning dr. knox pu

a vehicle gasoline has many slightly different compositions depending on local laws. however, on average it has a density of 0.737 g/ml this morning dr. knox pump 7.2 gallons of gasoline in order... more
Chemistry Conversion Chemistry Chemistry Lab

09/07/18

Combustion Chemistry

Complete combustion of 5.90g of a hydrocarbon produced 18.1g of CO2 and 8.63g of H2O. What is the empirical formula for the hydrocarbon?
Chemistry Conversion Chemistry Organic Chemistry

09/05/18

2.70 g/cm^3 converted to kg/m^3

for my answer on my calculator I get 2700 g/m^3     But I’m not sure if I write 270. g/m^3 as my final answer because of the rounding to the least significant figure rule which we started with 2.70... more
Chemistry Conversion

09/05/18

If a car travels to New York at 65.0m/s. How would this be represented in km/hr

Please help 
Chemistry Conversion

09/03/18

A 1.50 cm3 sample of metal is found to weigh 8.91 g. Calculate the density of the metal in units of g/cm3 and g/mL. Be sure to answer all parts.

A 1.50 cm3 sample of metal is found to weigh 8.91 g. Calculate the density of the metal in units of g/cm3 and g/mL. Be sure to answer all parts.
Chemistry Conversion

08/25/18

How to convert fahrenheit to kelvins

The temperature of your armpit in kelvins (21°F) is equal to it's temperature in celsius plus 273
Chemistry Conversion

08/14/18

How many drops of antibiotic should the marine biologist apply?

The average blue whale has a length of 2500 centimeters. The distance from Jupiter to Saturn is 6.46 x 108 km. How many blue whales lined up tip to tail would it take to reach Saturn from Jupiter. ... more
Chemistry Conversion

08/14/18

How fast is Apple riding in centimeters/second

Mr. and Mrs. Applebee are planning a birthday party for their daughter, Apple. Apple would like to have an apple bobbing game at her party. Mr. and Mrs. Applebee buy a bucket that boasts it will... more
Chemistry Conversion

08/14/18

Round answer to four significant figures

A college student, Timmy, works as a dishwasher at a restaurant for a 12 hour shift on Saturday and Sunday every weekend making $12.00 an hour. If the cost of gas is $3.00 per gallon, how many... more
Chemistry Conversion Chemistry Significant Digits

07/20/18

Question about how significant digits work in chemistry.

I'm doing my online chemistry summer class and significant digits are included, of course. But I'm confused about them because everything I believe is being contradicted. Here's what I... more
Chemistry Conversion

07/19/18

calculate the number of mole in 2400g. of co.2

calculate the nimber of moles in 2400g. caco.2
Chemistry Conversion Chemistry

07/11/18

What is the pressure in a 10.00 liter container of methane, CH4(molarmass=16.05 g/mol) that contains 4.00 g of the gas at 25.0•c?

A. 0.610atm B. 0.305atm C. 1.07atm D. 10.7 atm
Chemistry Conversion Chemistry Chemical Formula

06/14/18

the factors influencing purity, eg during recrystallisation, filtration and drying of an organic compound.

I need help with this question
Chemistry Conversion

05/26/18

Determine the empirical formula for a compound that is 32.4g carbon, 6.81g hydrogen and 10.79g oxygen.

i need to know how to write the empirical formula
Chemistry Conversion

05/23/18

what is the right formula?

Suppose synthesis of Al2O3 is done in the lab using 20.50 g of Al and excess of O2. Upon purification, 35.48 grams of Al2O3 is produced. What is the percent yield of Al2O3?
Chemistry Conversion Chemistry Chemistry Helpneeded

04/29/18

Chemistry: Stoichometry

A 1.00 gram sample of potassium bicarbonate is decomposed by heating. If the resulting potassium carbonate weighs 0.725 grams and the calculated yield is 0.776 grams, what is the percent yield?
Chemistry Conversion Chemistry Chemistry, Homework

04/29/18

Chemistry: Stoichometry

Lithium metal decomposes in water and releases hydrogen gas. If 275 mL of hydrogen gas are produced at STP, what is the mass of lithium that reacted.   Li + H2O -> LiOH + H2
Chemistry Conversion Chemistry Chemistry, Homework

04/29/18

Chemistry: Stoiciometry

A Student used 4.55 grams of salicylic acid, along with acetic anhydride, to prepare aspirin.C7H6O3 + C4H6O3 -> C9H8O4 + C2H4O2(salicylic)   (acetic an)  (aspirin)    (acetic acid)(a)Find the... more
Chemistry Conversion Chemistry Conversion

04/24/18

How much .2 M NaOH would you need to add to neutralize 30mL of .5 M HCl

How much .2 M NaOH would you need to add to neutralize 30mL of .5 M HCl
Chemistry Conversion

04/18/18

Calculate the number of moles that contain 4.50 x 10 to the 24 power atoms of zinc

4.50 x 10^24 of zinc 
Chemistry Conversion

04/05/18

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

I'm not sure how to find the answer to this problem.
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