How does atomic radius change from left to right across a period in the periodic table?

a. it tends to decrease.

c. it first increases, then decreases.

b. it tends to increase.

d. it first decreases, then increases.

How do some deep-water bacteria in the ocean make food?

An oxygen atom has a mass of and a glass of water has a mass of. Use this information to answer the question below. Be sure your answers have the correct number of significant digits.

When a nonmetal oxide reacts with water, it forms an oxoacid with the same nonmetal oxidation state. Give the name and formula of the oxide used to prepare each of these oxoacids: (a) hypochlorous acid; (b) chlorous acid; (c) chloric acid;

What is the ratio of carbon atoms to oxygen atoms in this compound

Which force determines Earth's path around the Sun? A) nuclear force B) magnetic force C) gravitational force D) electrostatic force

A quantity of 1.922 g of methanol (CH3OH) was burned in a constant-volume bomb calorimeter. Consequently, the temperature rose by 5.72°C. If the heat capacity of the bomb plus water was 9.

Some studies has shown that peppermint odor increases people's mental sharpness, especially when they solve math problems.

Why can't double-replacement reactions start with one reactant is a pure metal?

The reaction 2 A + B2 2 AB follows this mechanism: Step 1: A + B2 AB + B (slow) Step 2: A + B AB (fast) What is the order with respect to [B2] in the overall reaction?

How many grams of P4O10 are produced if you burn 50.0 g of phosphorus with sufficient oxygen?