Aneutron breaks down to form ?
a. a proton and an electron
b. two protons
c. a...
Chemistry, 05.01.2020 15:31 HUNIXX6561
Aneutron breaks down to form ?
a. a proton and an electron
b. two protons
c. a helium nucleus
d. an alpha particle
what particle decomposes to produce the electron of beta radiation?
a. electron
b. neutron
c. proton
d. positron
what is the change in atomic mass when an atom emits gamma radiation?
a. mass increases by 1
b. mass decreases by 1
c. mass remains the same
d. mass decreases by 2
what is the change in the atomic number when an atoms emits an alpha particle?
a. increases by 2
b. increases by 1
c. decreases by 4
d. decreases by 2
Answers: 1
Chemistry, 22.06.2019 00:30
Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1
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Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:
Answers: 2
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For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)β2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2
Answers: 3
Chemistry, 22.06.2019 22:30
Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility
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