Which of the following groups consists of reactive p-block elements?

a. group 1a

c. group 8a

b. group 2a

d. group 3a

What type of reaction occurs when reactants absorb heat energy to form products? a. endothermic b. exothermic c. acid-base d. nuclear

Which of the followings statements accurately describes renewable energy sources? 1,) They include fossil fuels and hydroelectric power. 2.) They take millions of years to form and should be used responsibly. 3.

Some medications slow a person's nervous system. These drugs are often labeled "may cause drowsiness". Explain why a person needs to know about this side effect.

Abnormal cell division causes which health problem

A 425.00-gram sample of a compound decomposes into 196.01 grams of carbon, 41.14 grams of hydrogen, 130.56 grams of oxygen, and 57.29 grams of silicon. Experiments have shown the compound has a molecular weight of 208.329.

What is the full form of PVC

What happens when the land in the sea warm-up at different rates during the day

Increasing which variable would decrease the pressure of a contained gas?

How many moles of h2o are produced when using 7 moles of h2

A 25 mL sample of 0.100 M HNO3 completely reacts with NaOH according to this equation: HNO3 (aq) + NaOH (aq) → NaNO3 (aq) + H2O (1) How many moles of HNO3 are in the sample?