Which of the following is the substance that enables a leaf to use sunlight to produce food?

When a potassium atom forms an ion, it loses one electron. What is the electrical charge of the potassium ion? A. -2 B. -1 C. +2 D. +1

Type of disease in which the body attacks is own cell

What type of reaction is 3 NaBr + H3PO4  Na3PO4 + 3 HBr

Which is a characteristic of all waves? a All waves carry energy. b All waves move through space. c All waves move through matter, from particle to particle. d All waves transfer energy parallel to the direction of wave motion.

How many ammonium ions and how many sulfate ions are present in an 0.250 mol sample of (nh42so4?

The rate constant is found to be 3.9 x 10-5 M-1 s-1. Calculate the rate of formation of ozone when the concentration of oxygen atoms is 3.0 x 10-14 molar and the concentration of diatomic oxygen is 1.3 x 10-14 molar.

The element Oxygen, O, is an example of which of the following? Question 8 options: A compound B molecule C atom D mixture

The measurement 0.41006 gram, rounded to three significant figures, is expressed as

1. When adding strong base to a buffer, why can we assume the equilibrium value of the OH - is zero?

When acid (X) reacts with base (Y) to produce Mg3 (PO4) 2 - what are X and Y