Why is aluminium in group 3 of the periodic table?

What does the body do with the chemical energy of food that is not converted to the chemical energy of ATP? a. Stores it in the body's fat cells b. Converts it to carbon dioxide that is then expelled through the lungs c. Radiates it as heat d.

Hen an electric current passes through liquid water, hydrogen gas passes accumulates at one electrode and oxygen accumulates at the other. Which of the following is true? A) A physical change has occurred, with energy is being absorbed.

What is the density of laughing gas, dinitrogen monoxide, n2o, at a temperature of 325 k and a pressure of 113.0 kpa?

The coefficients in a balanced chemical equation represent

When finding molar mass of a compound what two pieces of information are needed? atomic mass and the number of each element atomic number and number of each element atomic mass of each element and the number of protons

Why is it possible to safely drink a solution that contains a 50:50 mixture of equal concentrations of a strong acid and a strong base, either of which, if ingested separately, would be very caustic and damaging?

Explain why many compounds that contain one or more hydrogen atoms are not classified as arrhenius acids

pure substance x is a green powder. when heated, it gives off a gas and changes to a black powder. is substance x an element or a compound? give reasons

What amount (moles) is represented by each of these samples? a. 20.0 mg caffeine, c8h10n4o2 b. 2.72 1021 mo?

A sample of gas occupies 40.0 mL at - 123°C. What volume does the sample occupy at 27°C if the pressure is held constant? V1T2 = V2T1 Don't forget to convert temperature to kelvin! Group of answer choices 8.80 mL 20.0 mL 80. ML 182 mL