The more particles an object has at a given temperature the more thermal energy is has true or false

How many atoms of oxygen would there be in a 2.500 kg sample of iron (II) nitrate (Fe (NO3) 2) ? NA = / frac{6.022x10^{23}objects}{1mol} 1mol 6.022x10 23 objects

What must be done to be certain that a chemical change has taken place? a. Check for the production of bubbles before and after the change. b. Demonstrate that a release of energy occurred after the change. c.

What is the nuclear binding energy for uranium-238 in joules? Assume the following:. Mass defect = 3.2008 x 10-27 kilograms. Use E = mc2, with c = (3 x 108 m/s) 2 Select one of the options below as your answer:A. 0.28807 x 10-12 joules B. 2.

Why do saturated fatty acids have straight structures, while unsaturated fatty acids have bent structures? a. Saturated fatty acids have a larger mass. b. Saturated fatty acids contain many more bonds. c.

The experimental density of a metal cylinder was found to be 7.52 g/ml. if the actual density is equal to 7.25 g/ml, then the percent error is

Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N2 (g) → 2Li3N (s) How many moles of lithium are needed to produce 0.60 mol of Li3N when the reaction is carried out in the presence of excess nitrogen?

7. Convert 5.2 cm of magnesium (Mg) ribbon to mm of Mg ribbon.

If you place a crystal substance on a tabletop, return to view it after some time passes, and find it as a powdered substance, which of the following processes most likely took effect? A. Efflorescence B. Distillation

What changes occur in the nuclei of atoms involved in the reactions that fuel nuclear power plants?

Calculate the molar mass for HCN. 0.2703 g/mol 2.703 g/mol 27.03 g/mol 270.3 g/mol