Which of the following statements is true?

Kinetic energy depends on mass, gravity, and speed.

All machines lose some energy because of friction.

Heat lost during work is easily recovered and used for useful actions.

Temperature and heat are the same.

How do you find the molar mass for ba (NO3) 2

Examine the equation of a reversible reaction. 2SO2 + O2 ⇌ 2SO3 Which of the answer choices correctly lists the reverse reaction? 2SO2 + 2SO3 → O2 2SO3 + 2SO2 → O2 2SO3 + O2 → 2SO2 2SO2 + O2 → 2SO3

When heated solid silver oxide decomposes into its elements

Indicate which orbitals overlap to form the σ bond between the carbon atoms in HCCH a. between an unhybridized s orbital on C and an unhybridized s orbital on the other C b. between a hybrid sp orbital on C and a hybrid sp orbital on the other C c.

What is an absolute zero of a temperature

A solution of a compound with a known extinction coefficient of 23,100 M-1cm-1 has an absorbance of 0.735 in a 1.30cm path length, what is the concentration of the solution

Balance the following equation with the smallest whole number coefficients. Choose the answer that is the sum of the coefficients in the balanced equation. Do not forget coefficients of "one". RbOH + H3PO4 → Rb3PO4 + H2O

What is the temperature of 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals

5.2*10^26 molecules of ch4 in volume

Which of the following statements about igneous rocks is correct A. intrusive igneous rocks are formed when magma is called above the ground. B. Extrusive igneous rocks are formed when magma is cooled above the ground C.