What causes the pressure of a gas in a container?
- AGas particles stopping and pushing outward
- BThe weight of the container pressing on the gas inside
- CGas particles colliding with the container walls
- DGas particles sticking to the walls
What causes the pressure of a gas in a container?
Which element exists naturally as diatomic molecules (two atoms joined together)?
Which unit is commonly used for the density of a liquid?
A solution has a pH of 2. What is its hydrogen ion concentration?
Вы разбавляете 100 мл 2 М раствора до общего объёма 400 мл. Какова новая концентрация?
During digestion, large molecules are broken down by adding water across their bonds. What is this reaction called?
Which phrase best describes a 0,001 M solution of hydrochloric acid?
What is the formula of calcium phosphate, made from Ca²⁺ and PO₄³⁻ ions?
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