Explain why sharpening a pencil is different type of physical change than freezing water to make ice cubes

How many moles of CoH12O6 are consumed if 6 moles of O2 are consumed?

At room temperature, none of the metals are a. soft. b. liquids. c. malleable. d. gases.

What mass of ammonia is formed when 3.75 grams of nitrogen gas react with hydrogen gas according to the balanced chemical equation: N2 (g) + 3H2 (g) - -> 2NH3 (g) ? 3.75 g 4.55 g 7.50 g 9.10 g

Why does the nitrogen concentration decrease after hydrogen is added? n2 (g) + 3h2 (g) ⇌2nh3 (g) why does the nitrogen concentration decrease after hydrogen is added?

Whose cell walls may contain cellulose can be plantlike, animal like or fungus

How many moles are in 23.4 g

A chemist prepares hydrogen fluoride by means of the following reaction: CaF2 + H2SO4 - -> CaSO4 + 2HF The chemist uses 11 g of CaF2 and an excess of H2SO4, and the reaction produces 2.2 g of HF. (a) Calculate the theoretical yield of HF.

Gaps in rock layers that develop when agents of erosion remove existing rock layers

Why are atoms always neutral

Question: Ron is a healthcare worker who needs to lift a heavy patient. Which kind of safety issue does this scenario relate to? A infection B. ergonomics C. human resources D. orientation