It's cold outside and you decide to cook some pasta. As you boil the noodles, the kitchen window begins to fog up. Which processes are at work here?

How do you determine the number of protons in an element

If you mix 40 grams of copper with 60 grams of sulfur, how much copper (I) sulfide (Cu2S) can be produced during the reaction? 2Cu + S → Cu2S

The symbol Ca-40 denotes that A. a calcium atom contains 40 protons B. a calcium atom contains 40 electrons C. a calcium atom contains 40 neutrons D. a calcium atom has a mass number of 40

What usually happens to the rate of reaction when the concentration of one of the reactants is increased

Q2. Which of these is a mixture? 1. chlorine 2. sodium chloride solution 3. sodium 4, sodium chloride

One method for preparing pure iron from Fe2O3 is by reaction with carbon monoxide. Fe2O3 (s) + CO (g) →Fe (s) + CO2 (g) How many moles of carbon monoxide are needed to react completely with 122 kg of Fe2O3.

A microspectrophotometer measures which of the following? Electrons Electricity Light absorption Pigments

Which symbol represent an isotope of carbon

7g of gold is heated from 17 degrees C to 42 degrees C. How much energy (heat) was used? The specific heat capacity of gold is. 031cal/gC.

Which of the following would a chemist be most likely to study? a leaf floating on water a leaf changing color in autumn a leaf being blown by the wind a leaf being eaten by insects