Ca + H2SO4 single replacement

How do tadpoles and frogs get oxygen in there bodies

To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 3.1-L bulb, then filled it with the gas at 1.00 atm and 28.0 °C and weighed it again. The difference in mass was 3.5 g. Identify the gas.

5. which element has 2 more protons than nickel?

A balanced chemical equation must have the same number of which of these on both sides of the equation? A) atoms B) reactants C) molecules D) compounds

Rate of subduction is one factor that distinguishes the three phases of the Cordilleran Orogeny.

The ionic naming rules

What is the PH of a solution whose [H+] is 0.0007

What was concluded about the structure of the atom as the result of the gold foil experiment? (1) A positively charged nucleus is surrounded by positively charged particles. (2) A positively charged nucleus is surrounded by mostly empty space.

Andre is predicting the products of chemical reactions. In one reaction, a hydrocarbon is the only reactant. What is the best prediction and explanation of this reaction? Two new compounds form as the hydrocarbon undergoes a synthesis reaction.

What evidence is there that electrons move around in definite pathways around the nucleus? What evidence is there that electrons m