Katerina is going to perform a reaction between Hydrochloric Acid (HCl) and solid Zinc. She needs to use 5 mols of HCl, how many grams of HCl should she use?

Is boron a metal or non metal or metalloid

Speed is zero when a line on a graph has this shape

a ballon filled with helium contains 85L and 1.2 atm. the pressure is reduced to 0.22 atm at constant temperature. what is the new volume? given info: equation. work: answer

In the reaction NO - (aq) + H O (l) → HNO (aq) + OH - (aq), the NO - acts as A) an Arrhenius acid B) a Bronsted acid C) an Arrhenius base D) A bronsted base

The synthesis of methanol from carbon monoxide and hydrogen gas is described by the following chemical equation: CO (g) + 2H2 (g) ? CH3OH (g) The equilibrium constant for this reaction at 25? Cis Kc=2.3*104.

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda