The stored energy in a battery can BEST be described as:

Question 6 options:

kinetic

nuclear

thermal

chemical

When the temperature of a hollow sphere with 685 L (volume) of helium gas is held at 621 K (temp), the pressure of the gas is 1890 kPa. How many moles of the helium does the sphere contain?

Find the molar mass of nitric acid (HNO3).

Which of the following processes has a negative ΔS? (A) evaporating 1 mol of a liquid (B) raising the temperature of 1 L of water from 295 K to 350 K (C) freezing of 1 mol of a liquid (D) None of the above

Experimental data have shown that the rate law for the reaction 2 hgcl2 (aq) + c2o4 2 - (aq) → 2 cl - (aq) + 2 co2 (g) + hg2cl2 (s) is: rate =

Which of the following is NOT soluble in water? A) NaCl B) KBr C) CH3CH2OH D) HCl E) C6H6 and how do i know?

A sample of pure copper has a mass of 5 grams calculate its volume

Which statement best explains why carbon is present in so many kinds of molecules? Question 1 options: It is abundant on earth, so it is readily available to bond with other elements. It does not form strong bonds, so it breaks apart.

How long does it tae for bleach to evaprate?

What product (s) forms at the cathode in the electrolysis of an aqueous solution of k2so4?

What element is used as a shield to protect people from radioactive substances?