In a lab, the mass of object A is 65 kg. Object A weighs:

(A) - 0.15 N

(B) - 6.63 N

(C) - 637 N

(D) - Cannot be determined

A cast iron grate is used to sear "grill marks" into food. If the grate has a heat capacity of 458.5 J/K, how much heat must be added to the grate to heat it from 292.5K to 459.7K?

I will give brainliest! Which branch of chemistry deals with the mass relationships of elements in compounds and the mass relationshops among reactants and products in chemical reactions?

Suppose you placed a tube containing 80% sucrose solution into a beaker of 40% sucrose solution. Would the tube gain weight or lose weight?

Methane gas, ch4, effuses through a barrier at a rate of 0.147 ml/minute. if an unknown gas effuses through the same barrier at a rate of 8.87e-2 ml/minute, what is the molar mass of the gas?

Both a globe and a flat world map can module features of the earth. Give an example of when you would use each of these modules.

Selena is growing geraniums outdoors in a pot. During the day, the temperature in her area averages 22°C (72°F). At night, the temperature has been dropping to around 13°C (55°F). What advice would you give to Selena and why?

How many carbons are in a molecule of hexane?

How does th composition of a mixture of hydrogen and oxygen differ from the composition of a compound containing hydrogen and oxygen?

You are asked to prepare 500 mL 0.250 M acetate buffer at pH 5.00 using only pure acetic acid (MW=60.05 g/mol, pKa=4.76), 3.00 M NaOH, and water. Answer the questions regarding the preparation of the buffer. 1.

Which direction do electrons move in when metals react with non-metals?