Staples and metal shavings are examples of which type of hazards

How many molecules of ch4 are in 48.2g of theis compound?

Which of the following statements is untrue in regard to sound traveling in air? A. As the distance from the Earth increases, the sound wave intensity also decreases due to the lessening density. B.

Aqueous carbonic acid H2CL3decomposes into carbon dioxide gas and liquid water. Write a balanced chemical equation for this reaction.

What states can electrons exist in

Classify the following as an endothermic or exothermic reaction: a. making popcorn in a microwave oven. b. a burning match. c. boiling water. d. burning rocket fuel. e. the reaction inside a heat pack

When an atom that has no charge loses two electrons, it becomes a: A: positive ion. B: negative ion. C: positive isotope. D: negative isotope.

A 155.0 9 piece of copper at 182 °C Is dropped into 2500 g of water at 23.9 °C. (The specific heat of copper is 0.385 1/9°C.) Calculate the final temperature of the mixture. (Assume no heat loss to the surroundings.)

Which state of matter is characterized by having an indefinite shape, but a definite volume? Gas Liquid Solid None of the above

What metric unit is used to measure distance?

In the chemical formula 3NO2 the number 3 is a