What is the molar ratio of N2 to H2O

Explain how a grain of sand that wash up on a beach could end up some day as lava pouring from a volcano?

Which physical properties do all stars have? Check all that apply. They are made of gases? They shine very bright? They have a spherical shape? They contain iron in their cores? They make energy through fusion? @nattyames snap

A 2.741 g sample of a new organic material is combusted in a bomb calorimeter. the temperature of the calorimeter and its contents increase from 24.33 °c to 28.60 °c. the heat capacity (calorimeter constant) of the calorimeter is 25.

Why does the s-block portion of the periodic table span two groups?

An organic compound in which a carbonyl group is bonded to a nitrogen atom is a (n) 1) amide 2) aldehyde 3) Ketone 4) Ester

In a reversible reaction chemistry equilibrium is attained when the?

explain the relationship between the kelvin temperature of a substance and the kinetic energy of its particles

You are asked to prepare a ph = 4.00 buffer starting from 1.50 l of 0.0200 m solution of benzoic acid (c6h5cooh and some added sodium benzoate salt (c6h5coona. a find the ph of the benzoic acid solution before adding the salt.

Caleb is an inventor who has designed a new kind of fishing net. He is looking for a strong, flexible material that can be used to hold a lot of weight and will not dissolve in water.

The teacher makes an argument to the class for why fire could be considered a living thing and then ask what is wrong with that argument. Tiana raises her hand and replies with one characteristic of life that fire does not have.