A person makes a 400 dollar deposit in a bank account in January. By December, the value of that deposit will

A. be three hundred dollars.

B. actually double.

C. remain the same, plus interest.

D. be two hundred dollars.

Explain the fundamental steps of the scientific method.

A balanced reaction equation must have the same number of atoms of each element on both sides of the equation. The reaction C2H5OH+3O2→2CO2+3H2O represents the combustion of ethanol. Count the atoms of each element on both sides of the reaction.

2. Lithium-6 is 4% abundant and lithium-7 is 96% abundant. What is the average mass of lithium?

Which of the following characterizes the sodium-potassium pump? A) Sodium ions are pumped out of a cell against their gradient. B) Potassium ions are pumped into a cell against their gradient. C) The pump protein undergoes a conformational change.

Draw a single lewis structure for the phosphate ion (po43-), assuming that the phosphorus atom can expand its octet such that the formal charge on each of the atoms is minimized. include all formal charges and lone-pair electrons.

During which phase change does the arrangement of water molecules become more orderly A.) melting B.) subliming C.) boiling D.) condensing

What's the difference between Mixture and Solution?

Which describes the alkalaine solution? A) pH less than 7 B) pH equal to seven C) basic D) acidic

Limestone is primarily a crystal form of caco 3 . How many moles of oxygen are in a 1.25 mol sample of caco 3 ? Only include the numerical value in your answer. Do not include units.

The expression of 5522 km in scientific notation is