A sample of iron absorbs 67.5 j of heat upon which the temperature of the sample increases from 21.5 °c to 28.5 °c. if the specific heat of iron is 0.450 j/g-k, what is the mass (in grams) of the sample?

Which net ionic equation describes the reaction between NaOH (aq) and HCl (aq) ?

The reaction of aluminum with bromine is shown here. The equation for the reaction is 2 Al (s) + 3 Br2 (ℓ) n Al2Br6 (s) 1. What are the stoichiometric coefficients in this equation? (a) 1, 3, 4 (b) 2, 3, 1 (c) 1, 6, 8 (d) 1, 1, 1

Explain Gay-Lussac's Law in terms of the kinetic-molecular theory.

Which is the reason that ionic compounds are brittle?

For each of the following situations, state the probability rule or rules that you would use and apply it or them. Write a sentence explaining how the situation illustrates the use of the probability rules. (a) The probability of event A is 0.417.

What volume of gold would be equal in mass to a piece of copper with a volume of 101 ml? the density of gold is 19.3 g/ml; the density of copper is 8.96 g/ml?

What does condensation mean in the water cycle?

An organism's unique characteristics affect the individual's ability to survive in its environment. true or false

What is the difference between a chemtrail and a contrail?

How do you dispose of an unknown chemical