How many types of atom make up a particle of water

A 50-gram sample of a radioactive nuclide is left to decay for 10 hours. At the end of 10 hours, only 25 grams of the sample is left. What is the half-life of the nuclide sample?

Hydrocarbons are compounds that are composed of carbon and hydrogen. Which statement does the law of definite proportions support?

Silver chloride, often used in silver plating, contains 75.27% ag. part a calculate the mass of silver chloride required to plate 135 mg of pure silver.

When a layer of air with temperatures above freezing sits above a layer of subfreezing air near the ground, which type of precipitation is likely to form? a. rain b. snow c. sleet d. hail

Ca3 (PO4) 2 + 3 SiO2 + 5 C → 3 CaSiO3 + 5 CO + 2 P Given the balanced reaction above, what mass (in grams) of phosphorus is produced if 36 g C react?

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