He table below gives the numbers of protons, electrons, and neutrons in four atoms. Atom Number of protons Number of neutrons Number of electrons 1 9 8 9 2 9 9 8 3 9 9 10 4 9 10 9 Based on the table, which atom has a charge of - 1?

Conductors have (blank) resistance. Moderate. Very High. Very low.

G what is the difference between the sidechains of leucine and isoleucine? select one: a. one is charged, the other is not b. one has more h-bond acceptors than the other c.

The molar mass of magnesium (Mg) is 24.30 g/mol. There are 6.02 1023 atoms in 1 mol. How many atoms are present in 48.60 g of Mg? 3.32 10^-24 atoms 1.96 10^-21 atoms 1.20 10^24 atoms 7.11 10^26 atoms

What are the chemical properties of alcohol and alkene?

Consider the half reactions below for a chemical reaction. 2 Equations: First: upper M g right arrow upper M g superscript 2 plus (a q) plus 2 e superscript minus.

Describe a chemical formula give an example

Consider the reaction between barium chloride and sodium sulphate. If 25.0 mL of 0.75 M barium chloride react, how many grams of solid are produced?

Which of the following is the correct definition of nuclear energy? energy produced from the splitting of atoms energy an object has because of its motion or position energy stored in chemical bonds of molecules energy resulting from the flow of

Ethyl acetate reacts with H2, in the presence of a catalyst to yield ethyl alcohol: C4H8O2 + 2H2--> 2C2H6O. A. How many grams of ethyl alcohol are produced by reaction of 2.7 mol of ethyl acetate with H2? B.

Why is it incorrect to balance a chemical equation by changing the subscripts?