Which Element (s) have 3 Energy Levels? (select all that apply)

Sodium (Na)

Calcium (Ca)

Tin (Sn)

Neon (Ne)

Phosphorus (P)

Sulfur (S)

Lithium (Li)

Yttrium (Y)

Argon (Ar)

What does the term extremophiles? a. being able to survive in normal environments b. being able to survive in extreme environments c. being able to survive in soil d. being able to survive in water

When 3.05 moles of ch4 are mixed with 5.03 moles of 02 the limiting reactant is?

Calculate the vapor pressure of a solution prepared by dissolving 5 g of water in 78 g of ethanol (CH3CH2OH) at 37 C. The vapor pressures of ethanol and water at this temperature are 115 torr (ethanol) and 47 torr (water), respectively.

What do the parentheses mean in a chemical reaction and how they are used

Which of the following are mixtures? Air, salt, water, salt water

The ideal gas law shows us how a gas will behave under many conditions. The formula is: P V = n R T Where P = pressure, V = volume, n = amount of the substance, R = ideal gas constant, and T = temperature.

The Suns ultraviolent Rays can cause skin damage including sunburn and even skin

Peas contain 250 kJ per 100 g. You would use the equivalent of 600 g of peas if you slept for.

A sample of gas in a balloon has an initial temperature of 21 ∘C and a volume of 1310 L. If the temperature changes to 70 ∘C, and there is no change of pressure or amount of gas, what is the new volume, V2, of the gas?

Which is a waste product of aerobic respiration? A. water B. energy C. oxygen D. glucose