Which of the following elements has the largest atomic radius?

Potassium

Calcium

Cobalt

Nickel

Why does a chemical equation have to be balanced

How many grams of Hydrogen (H) would need to react with 190 grams of Fluorine (F) to make 200 grams of HF (Hydrofluoric Acid) ? Question 6 options: 200 20 10 5

The prefix 'kilo-' means a thousand. 1 kilogram=1,000 grams How many kilograms is 527 grams? Round your answer to the nearest tenth of a kilogram. I get 0.54 im i correct

Calculate the equilibrium constant K for the following reaction: H2 (g) + Cl2 (g) ⇋ 2 HCl (g) at equilibrium, [HCl] = 0.50 M, [H2] = 0.75 M, [Cl2] = 0.25 M

The specific heat of copper is 0.4 J/g^ * C If a sample of copper absorbs 480J of energy and its temperature changes from 20.0 ^ * c to 60.0 ^ * C what mass of copper was heated?

True or False: Gases have a definite shape and volume. True False 2. What happens to the kinetic energy of particles when a substance changes from a liquid to a solid? Decreases Stays the same Increases

Some skin creams claim that they are "pH balanced" yet do not have a pH of 7. what do the manufacturers mean by "pH balanced"

Some coastal regions of the world have cooler summers and warmer winters than inland regions at the same latitude. What accounts for this difference in climates? A. Coastal areas receive more sunlight. B. The ocean moderates air temperatures. C.

What's the difference between Mixture and Solution?

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