How many moles of carbon are in 7.87x10^7

We use a kind of plant growth hormone to regular plant growth. We dissolve 5mg of the solution into 2kg of water. What is the dosage of the solution in ppm?

Calcium hydroxide is partially soluble as shown by the following reaction: Ca (OH) 2 (s) → Ca2 + (aq) + 20H (aq) What is the pOH of a 5 x 10-5 M Ca (OH) 2 solution? pH = __ Enter the answer

A hydrate of sodium acetate, NaC2H3O2, has a mass of 84g. Upon dehydration 39.27g of water is extracted from the compound. What is the Formula of the compound?

What do scientists use to measure the mass of an irregularly shaped solid?

Which describes isotopes? Check all that apply.

What is the distance from the highest part of one wave to the highest part of the next wave.

Calculate Delta E when 33.0 g of carbon dioxide sublimes at 77.0 K and 1 ATM

Calculate zeff for a valence electron in an oxygen atom.

Which of the following are physically properties of a penny

Complete the following statements about the functions of the digestive system. The starts an involuntary swallowing action when it senses food. The squeezes food down the digestive tract by an involuntary synchronized muscle movement called.