Classify the following compounds as ionic or covalent: a. MgCl2 b. Na2S c. H2O d. H2S

Which expression is a measurement of density?0.71 mg5.2 cm320 g/cm25.13 kg/L

Why a common measuring system is important

For the reaction of nitrogen gas and hydrogen gas to make methane below, what stresses would shift the equilibrium to the left toward the reactants? N2 (g) + 3 H2 (g) ⇌ 2 NH3 (g) + Energy

Which statement is true about molecules and compounds? Question 7 options: A Both are made of only one kind of atom. B Both are made of two or more atoms. C Both are made of two or more elements. D Both are made of only one element.

What is the relationship among cells, chromosomes, genes, and DNA? DNA is a double-helix structure found in the cell nucleus. Chromosomes straighten out the DNA so the code can be read by genes. Cells contain chromosomes which are made up of genes.

How many grams of KCl are produced when 60 grams of K are reacted?

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How do compounds affect an atom's stability

You need to make 10 mL of 2 mg/ml solution of protein and you have 25 mg/mL solution. How much protein solution and water do you need to mix in order to make the required solution?

The definition of volume is? a) width*height b) the space occupied by mass c) the space occupied by a liquid d) the mass of liquid required to fill a container