If someone wanted to cut an apple in half she would use

1. a lever

2. a wheel and axle

3. Pulley

4. a wedge

Which is required for convection to occur?

What do seismic waves transfer?

If a 100.-g sample of platinum metal has a volume of 4.67 ml, what is the density of platinum in g/cm3?

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Consider the reaction, 3 cu + 8 hno3 = > 3 cu (no3) 2 + 2 no + 4 h2o. how many moles of h2o will be made from 98.6 grams of cu? give your answer to one decimal place.

What is the name of a binary compound made up of lithium and chlorine?

A scientist in London and a scientist in California both conducted independent investigations that produced similar results.

When magnesium combines with oxygen, the reaction involves a. a conversion of protons into electrons. b. sharing of electrons between Mg and O. c. transfer of electrons from Mg to O. d. transfer of electrons from O to Mg.

The activation energy for the reaction no2 (g) + co (g) ⟶no (g) + co2 (g) is ea = 100 kj/mol and the change in enthalpy for the reaction is δh = - 375 kj/mol.

What process transform solar energy into chemical energy?