Chemistry, 01.12.2021 03:50, saifulcrc1397
If 0. 1 moles of na2hpo4 and 0. 1 moles of nah2po4 are mixed in water, what is the resulting ph? the pka values for phosphoric acid are 2. 1, 7. 2, 12. 4.
Answers: 3
Chemistry, 22.06.2019 07:00, maryjane8872
Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 1
Chemistry, 22.06.2019 12:00, sophiaa23
Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
Answers: 2
If 0. 1 moles of na2hpo4 and 0. 1 moles of nah2po4 are mixed in water, what is the resulting ph? the...
Mathematics, 01.08.2019 08:20