Which of the following statements is true of ions?

a. positive ions are from gaining electrons

b. Negative ions are from gaining electrons

c. Positive ions are from gaining protons

d. Negative ions are gaining protons

Sebanyak 4,5 mg magnesium hidroksida (Mg (OH) 2) dapat larut dalam 500 ml air. nyatakan kelarutan Mg (OH) 2 dalam mol L-1

The layer below the active layer of the tundra is called the

An anhydrous form of a compound is 38.95% of the mass of its heptahydrate form. Calculate it's molar mass.

What is the weight in grams of 3.36 * 1023 molecules of copper sulfate (CuSO4) ?

In this experiment, you will use a track and a toy car to explore the concept of movement. You will measure the time it takes the car to travel certain distances, and then complete some calculations.

Evaluate - if you put a scale in an elevator and weigh yourself as you ascend and the descend, does the scale have the same reading in both instances?

Why would you add a catalyst to something

A sample of the sugar d-ribose (C5H10O5) of mass 0.727 g was placed in a calorimeter and then ignited in the presence of excess oxygen. The temperature rose by 0.910 K. In a separate experiment in the same calorimeter, the combustion of 0.

the volume of an ideal gas in a container is 2.0 L what will be the volume of the gas if the pressure on the container is doubled while the temperature is reduced from 400 K to 200 K

Which of the Following Will result in increasing temperature of s gas