A block has a mass of 20g and measures 2cm*4cm*2cm, will it sink or float?

Why is the stability of a compound considered a chemical property

Test your knowledge of water's ability to dissolve substances by matching the following statements with the correct answers, when water breaks apart an ionic compound into cations and anions: when water surrounds substances that have been "broken

Which of these must be an organic compound? sodium chloride water carbon dioxide hydrogen peroxid?

Ladybugs eat aphids on plants. Ajoy counts the number of ladybugs in one square meter of his garden. To estimate the number of ladybugs in the entire garden, Ajoy needs the dimensions of the garden. ladybug life span. number of plants in the garden.

If you started with 1000 units of a radioactive element that has a half-life of 2,500 years, how many half-lives will the material have gone through in 7500 years? (Show work and explain answer).

Convert 4.992*1010 g to each of the following units. B. Mg c. mg D. metric tons

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?