What is the ph of a solution of 0.700 m kh2po4, potassium dihydrogen phosphate?

If a substance has an odor, it is _ A. Solid B. a liquid C. Volatile D. A pure substance

What mode of radioactive decay is most likely for the na-20 isotope?

What volume of nitrogen gas is produced by the explosion of 65.0 g of sodium azide at STP? The balanced chemical equation is 2 NaN3 (s) = 2 Na (s) + 3 N2 (g) for this reaction. a. 33.6 L b. 67.2 L c. No right choice.

Discuss what all the values of w and q should be if a system is exothermic. Then discuss what all the values of w and q should be if a system is endothermic.

Two of the main dangers for the icebreaker ship Polarstern during their year-long stay in the frozen Arctic ocean are 1) the ship being crushed by the frozen ice and 2) polar bears. True False

What is the solubility of nitrogen and calcium nitrate in cyclohexane?

Carbon exists in nature as three isotopes. Given the atomic masses and relative abundance of the isotopes, what is the average atomic mass of carbon?

What is the correct value for Avogadro's number? A. 6.022 x 10^23 B. 6.023 x 10^22 C. 6.022 x 10^33 D. 6.022 x 10^2.3 E. none of the above

Fossil fuels are considered useful to humans because they are

Which organelles are unique to plant cells? chloroplasts mitochondria vacuoles nuclei