The tilt of the Earth on its axis causes

A: a year

B: day and night

C: a month

D: the seasons

A student dissolves 20g of potassium chloride in 100cm³ of water in a beaker. What is the concentration of the solution in g/dm³?

What caused the bonding of two atoms which undergo an ionic bond? A. mutual electrons interlock B. attraction between electron cloud and nuclei C. opposite ions attract each other D. sharing of outer shell

The amount of heat transferred from an object depends on which of the following? a. the specific heat of the object b. the initial temperature of the object c. the mass of the object d. all of the above

1. A change in temperature is always an indicator of a chemical reaction. True or False? 2. A color change is an indicator of a chemical reaction. True or False? 3. A change in size is an indicator of a chemical reaction. True or False? 4.

How much heat is needed to raise the temperature of 8g of water by 16oC?

Which scientific law predicts that the mass of the reactants before a chemical reaction will equal the mass of the products after the reaction has taken place?

How does the magnitude of kp for the reaction 2hi (g) ⇋h2 (g) + i2 (g) change if the equilibrium is written 6hi (g) ⇋3h2 (g) + 3i2 (g) ?

Select the correct answer. Which of these elements is rarely found in organic molecules? A. hydrogen B. oxygen C. barium D. carbon

Can a solution with undissolved solute be supersaturated

What family is the mineral lead in?