A calcium ion has 20 protons and 18 electrons. Each proton has a + 1 charge and each electron has a - 1 charge. What is the charge of the calcium ion?

How many liters will a quart (dry measure) hold?

How many solutions does the equation have? -13 = |C - 21 no solution one solution two solutions Submit

What is 190,000,000 written in word form

It's 9:30a. m and Sally goes to sleep at 1:37 in the morning how much hours did she stay awake?

Solve the inequality. -2p + 4 < 20 p > - 8 p < - 10 p < - 8 p < - 12

A monarchy has one leader. how many terms do you think a monomial has?

May wants to buy a $50,000,000 car. For every week, she pays 5% until she pays off the price. How many weeks would she need until she pays the total of $50,000,000?

The population of the United States is 3 * 10^8 people, and the population of the world is 6.9 * 10^9 people. How many times larger is the world population? Write your answer in standard notation.

Which of the numbers are divisible by 9 119 702 432 641 372

A restaurant used 8 5/6 pounds of rice on Monday and 5 1/6 pounds of rice on Tuesday. How many more poundsof rice was used on Monday than on Tuesday?