Is this equation endothermic or exothermic? How do you know?

2NaCl + 822 kJ - -> 2Na + Cl2

How are the African plate and south American plate moving relative to each other

Given the balanced equation: 2 KI + F2 - -> 2 KI + I2 Which type of chemical reaction does this equation represent?

If an object loses electrons will it be positively charge or negativey charged

Whick kind of energy does the soccer player transfer to the ball?

Vanessa is conducting an experiment to see how exposure to different types and amounts of light affects the growth of plants. Her results are shown in the data table below. Light Source Type of Plant Growth (centimeters) Sunlight Pea Plant 1.09375.

You need to make 10 mL of 2 mg/ml solution of protein and you have 25 mg/mL solution. How much protein solution and water do you need to mix in order to make the required solution?

The definition of volume is? a) width*height b) the space occupied by mass c) the space occupied by a liquid d) the mass of liquid required to fill a container

What is the empirical formula of a substance that is 53.5% C, 15.5% H, 31.1% N?

What is the lowest layer of the atmosphere and what is its highest altitude?

An atom that has 84 protons and 86 neutrons undergoes a reaction. At the end of the reaction, it has 82 protons and 84 neutrons. What happened to the atom?