How many moles of magnesium oxide are there in 2.50 * 10^25 formula units of MgO?

Why are the alkali metals and the halogens among the most reactive elements on the periodic table

Brainliest if answered in the next 5m Which of the following is not a base? alcohol sodium hydroxide limewater potassium hydroxide

A handbook gives the density of calcium as 1.54 g/cm3. based on lab measurements, what is the percentage error of a density calculation of 1.25 g/cm3? 37. what is the percentage error of a length measurement of 0.229 cm if the correct value is 0.

M) The chemical formula of sodium carbonate is Na2CO3- Sate how many carbon atoms are present in the formula

A mixture of two compounds, a and b, was separated by extraction. after the compounds were dried, their masses were found to be: 105 mg of compound a and 91 mg of compound b. both compounds were recrystallized and weighed again.

Which is an inner planet? Neptune earth Saturn Jupiter

Which item takes the most amount of water to produce

1. Which of the following two ingredients can combine to make a compound? a. Salt and water b. Hydrogen and oxygen c. Eggs and butter d. Sugar and water 2.

What are two ways climate can influence weathering?

A light has a wavelength of 4.10*10^12m. What is the Frequency?