How many protons, neutrons, and electrons are there in a neutral atom of 97tc (technetium-97) ?

Based upon the pH scale, a vegetable with a pH of 5.3 would be

Dinitrogen pentoxide can be made by the reaction of nitrogen with oxygen. Consider the reaction of 35g of nitrogen with 48 grams of oxygen. What is the maximum number of grams of dinitrogen pentoxide that can be made?

K + Li2O what is the product

How does the water cycle renew the supply of freshwater on Earth?

3. 79,789kJ = (293k) (377kJ)

Use the following half-reactions to design a voltaic cell: Sn4 + (aq) + 2 e - → Sn2 + (aq) Eo = 0.15 V Ag + (aq) + e-→ Ag (s) Eo = 0.80 V What is the overall cell potential? Group of answer choices

How did primo levi use his chemistry to survive Auschwitz?

Calculate the percent yield when 500 grams of carbon dioxide react with an excess of water to produce 640 grams of carbonic acid. CO2 + H2O - --> H2CO3

Which of the following is a possible equivalence that can be used in a conversion? A. ten to the negative second power hL over one L B. ten to the negative second power cL over one L C. ten to the first power L over one daL D.

Which process is a chemical change? burning a match boiling water melting ice breaking glass