How to make a brief lab report

Why does a solid change to liquid when heat is added? O A. The spacing between particles decreases. B. Particles lose energy. C. The spacing between particles increases. D. The temperature decreases. Reset Next

It is estimated that about one trillion atoms would fit into a period at the end of the sentence. If all the atoms were carbon atoms of the same size and if the period had an approximate volume of 0.

What is the primary source of gas for thick terrestrial planet atmospheres?

The currents of the Earth's oceans are caused by A. marine organisms and volcanic eruptions. B. disturbances by submarines and large ships. C. waves and earthquakes along tectonic plate boundaries. D.

How many moles are present in 34 grams of cu (oh) 2? * ?

Why does acetone have more surface tension than methanol?

What is the vapor pressure of the solution if 15.0 g of water is dissolved in 100.0 g of ethyl alcohol at 25 ∘C? The vapor pressure of pure water is 23.8 mmHg, and the vapor pressure of ethyl alcohol is 61.2 mmHg at 25 ∘C.

When 500 mL of 0.100 MAgNO3 is combined with 500 mL of HCl in a coffee-cup calorimeter, the temperature changes from 23.40 ∘C to 24.21 ∘C. Calculate ΔHrxn for the reaction as written. Use 1.00 g/mL as the density of the solution and C=4.

How much heat is required to warm 1.30 l of water from 24.0 ∘c to 100.0∘c? (assume a density of 1.0g/ml for the water.) ?

how many protons electrons and neutrons does a atom with the atomic number 50 and mass number 125 contain?