Chemistry, 04.06.2020 19:07 HalpMahOnMahH0meW0rk
Each iron atom has a mass of about 9 x 1023 grams. Even a small grain of iron has an incredible number of atoms in. it--about 1 x 1018 atoms in one grain. Which of these is most similar to the number of atoms in a grain of iron?
Answers: 2
Chemistry, 22.06.2019 19:30
Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. what is the independent variable for this experiment?
Answers: 1
Chemistry, 22.06.2019 20:30
The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?
Answers: 3
Chemistry, 23.06.2019 05:30
Calculate the temperature rise when 0.2g of propane is used to heat 400cm cubed of water.
Answers: 3
Each iron atom has a mass of about 9 x 1023 grams. Even a small grain of iron has an incredible numb...
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