3 clues that indicate a chemical change

How can we find the mass of a liquid only, if it is in a container? This is science but I'm not sure if I'm considering it chemistry.

If something has an actual yield of 2.5 grams and a theoretical yield of 7.5 grams, what is the percent yield?

Descibe enthalpy change in term of exothermic and endothermic

In a hydrocarbon's name, what does the suffix - yl indicate about the molecule?

Which organic compound consists of the elements carbon, hydrogen, and oxygen and has carbon and hydrogen atoms in a 2:1 ratio? a. Maltose b. DNA c. Maltase d. ATP

An ice cube and a scoop of table salt are left outside on a warm, sunny day. Explain why the ice cube melts and the salt does not

Which atomic orbitals overlap to form the C-O bond of dimethyl ether, (CH3) 20? O c 2sp^3 + 2sp^3 OC 2sp^2 + 0 2p O c 2sp^2 + 0 25p^2 O C 2sp^3 + O 2sp?

For the reaction CO+2H2=CH3OH at 700 K, equilibrium concentrations are [H2]=0.072 M, [CO] = 0.020M, and [CH3OH] = 0.030 M. Calculate K

How to make fluffy slime without contact solution?

When you mixed 20 grams of magnesium and an excess of nitric acid, 1.7 grams of hydrogen was actually produced. What is the percent yield of hydrogen during this reaction? Mg + 2HNO3 Mg (NO3) 2 + H2 3.3 % 48.5 % 25.7 % 102 % 98 %