How much heat is needed to raise the temperature of 75 g of a substance by 15 C when the specific heat is 0.92 J/g-C?

Is it correct to say that only one observable change accompanies a chemical change?

Methyl orange (hmo) is an acid-base indicator. its two forms in solution are hmo (red) and mo - (yellow). when hmo is added to distilled water, the solution is yellow. how would you turn the solution red?

A typical neon light contains neon gas mixed with argon gas. If the total pressure of the mixture is 1.63 atm and the partial pressure of the neon is 0.71 atm. What is the partial pressure (atm) of argon?

with a suitable reaction equation, show the liberation of hydrogen gas in a reaction between silver metal and hydrochloric acid

What do you use to make a precise measurement of liquid?

Hydrogen is a pure substance represented by the chemical symbol h. which of the following best describes hydrogen a. hydrogen is a compound made of only one kind of atom. b. hydrogen is a compound made of two or more kinds of atoms. c.

How to assign oxidation and reduction numbers

How to tell difference between hydrogen gas and oxygen gas?

Why do atoms have different speed

Jose gets up from his seat on the bus to move closer to the front. Just as he begins to walk forward, the bus stops at a light.