Chem equation

Chem equation

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

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...

1 liter = 0.26417 gal, and 1 cubic foot = 7.4805 gal.

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?

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...

Please help

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.

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

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...

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 hold...

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 gallons...

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 mean... For...

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

A. 0.610atm B. 0.305atm C. 1.07atm D. 10.7 atm

I need help with this question

by colourimetery

i need to know how to write the empirical 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?

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?