Chemistry, 24.06.2019 12:00 lovemykay2355
Which statement about elements is false? a. the same kind of atoms exist in an element. b. there are about 1,000 elements found in nature. c. some elements have been made in laboratories. d. zinc, copper, and iron are elements.
Answers: 1
Chemistry, 22.06.2019 05:00
In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?
Answers: 1
Chemistry, 22.06.2019 10:10
Stage in which a typical star has completely stopped fusion
Answers: 1
Chemistry, 22.06.2019 17:10
Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth
Answers: 2
Which statement about elements is false? a. the same kind of atoms exist in an element. b. there...
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