How many hydrogen atoms are represented by the formula below?

3Na2H3IO6

A.) 3

B.) 6

C.) 9

D.) 12

Magnesium (Mg) reacts explosively with oxygen (O2) gas. Which of these elements is most likely to react with oxygen in a similar way? manganese (Mn) calcium (Ca) bromine (Br) sulfur (S)

How many grams of cl2o7 react with an excess of h2o to form 56.2g of hclo4

Which parts of sedimentary rock formation include the breakdown and carrying away of existing rock? Check all that apply.

What pressure is required to achieve a co2 concentration of 5.80*10-2 m at 20∘c?

Is 0.297 cg the same as 2.97 milligrams

Which of the following are true statements about equilibrium systems? For the following reaction at equilibrium: CaCO3 (s) ⇌ CaO (s) + CO2 (g) adding more CaCO3 will shift the equilibrium to the right.

How many sulfide ions are present in 23.5g of Sb2S3

2. An automobile tire has a pressure of 210 kPa at 293 K. What will be the tire pressure after driving, if the tire temperature rises to 308 K?

Students measuring the mass of a rock record 6.759 g, 6.786 g, 6.812 g, and 6.779 g. Which other measurement of the block's mass would be most precise? A. 6.702 g B. 6.781 g C. 6.605 g D. 6.858 g

What two elements make up dihydrogen monoxide?