How many moles are equal to 1.27*10^23 molecules of H2O

What would be the mass number of a nitrogen atom with 8 neutrons?

In the lab, felipe has two solutions that contain alcohol and is mixing them with each other. he uses twice as much solution a as solution b. solution a is 12% alcohol and solution b is 15% alcohol.

What volume of benzene (C6H6, d = 0.88 g/mL, molar mass = 78.11 g/mol) is required to produce 1.5 x 103 kJ of heat according to the following reaction?2 C6H6 (l) + 15 O2 (g) → 12 CO2 (g) + 6 H2O (g) ΔH°rxn = - 6278 kJ

How much does it cost to drive 75 minutes

Which statement best describes the relationship between the ingredients A. they can be separated from each other only using chemical reaction B. thay are always present in exactly the same ratio in all sodas or C.

Do substances have to be cold to freeze?

Which statement is true of the carbon atoms that make up a diamond? A. They can slip past one another slowly. B. They are always vibrating in place. C. They vibrate only when they are heated. D. They are locked in place and do not move at all.

A 48.3 mL sample of gas in a cylinder is warmed from 22 C, 87 C to 0.0 C what is the final temperature

Titration of 25.00 ml of an unknown hcl solution with 0.1550 m naoh starts at a buret reading for naoh of 0.33 ml. the phenolphthalein indicator turns light pink in the acid solution for over 30 seconds at a buret reading of 24.19 ml.

To what volume should you dilute 70 mL of a 10.0 MH2SO4 solution to obtain a 1.70 MH2SO4 solution?