What triggers nuclear fusion in stars?

The specific heat of water is 4.18 joules per gram Celsius. How much he does 225.0 g of water release when it cools from 85.5°C to 50.0°C

Which property is typical of an acid? A. pH greater than 7 B. has a sour taste C. produces hydroxide ions D. turns litmus paper blue

In the measurement 0.503 L, which digit is the estimated digit?

I am having some trouble figuring out how to approach the following problem: A 75.0-mL volume of 0.200 M NH3 (Kb=1.8*10-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 17.0mL of HNO3.

What are the names of some chemicals contained in mouthwash and toothpaste?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda