Which of the following factors affect friction?

A. the smoothest of the surfaces that are touching

B. the amount of force that is pressing them together

C. Both A and B

D. Neither A nor B

What is the number of moles of beryllium in 36 g of Be?

In a carbon-carbon triple bond, what is the nature of the bonding between the carbons?

1.) How many unpaired electrons are there in the Fe3 + ion when it is in its ground state? 2.) Which of these ions have noble gas electron configurations? (Give the electron configuration of each ion.) Cr3+ Al3+ Se2- 3.

A sample of gas occupies a volume of 120.0 mL at a pressure of 0.75 atm and a temperature of 22°C What will the volume be at a pressure of 1.25 atm and a temperature of 70.0°C?

Calculate ΔHrxn for the following reaction: CH4 (g) + 2O2 (g) →CO2 (g) + 2H2O (l) Use the following reactions and given ΔH values.

Youll get brainliest if you have it right! How much heat does 225 g of water gain when its temperature rises from 25%C to 32°C? A. 6.59kj B. 21.65 kj C. 0.376kj D. 30.12kj

Explain hydrocarbons as fue

How many grams of K2CO3 are needed to prepare a 400.0 mL of a 4.25M solution? 1.7 g 235 g 81.3 g 138 g

A student titrates an unknown amount of potassium hydrogen phthalate (khc8h4o4, abbreviated khp) with 20.46 ml of 0.1000 m naoh solution. khp has one acidic hydrogen. what mass (in grams) of khp was titrated by the sodium hydroxide solution?

Name these Ionic Compounds a. LiCl b. NaCl c. KBr