Answer:
The answer is D) All the above
Explanation:
B.Reproducing molecules evolved into living organisms by biological processes.
C.Rocks and fossils were transformed into living molecules by biological processes.
D.Atmospheric gases were transformed into living organisms by chemical changes.
the answer to your question would be A
hope i heled
Answer:
A. Non-living molecules evolved into living molecules by chemical changes.
Explanation:
(B) 31
(C) 32
(D) 48
Monopoly GO! bye bye guys i gtg
B.iodide-53
C.iodide-127
D.iodine-127
Answer:
iodine-127
Explanation:
I did a quiz and it was correct.
Bombarding sodium-23 with a
proton produces nuclide X and a neutron. What is nuclide X?
Answers:
magnesium-24
magnesium-23
neon-23
s
odium-24
none of the above
The isotope P
has a half-life of 14.3 days. If a sample originally contained 1.00 g of P,
how much was left after 43 days?
Answers:
0.250 g
0.125 g
0.750 g
0.500 g
Identify X in the reaction
below.
U
+ C
→ Cf
+ X
Answers:
1
alpha particle
3
protons
6
neutrons
6
electrons
A .20 gram sample of C-14 was allowed to decay for 3 half-lives. What mass
of the sample will remain? Carbon-14 has a half life of 5730
years.
Answers:
0.025
0.05
0.1
0
.01
0.05
The isotope Cu
has a half-life of 30 s. If a sample originally contained 48 mg of Cu,
how much time passed before the amount fell to 3 mg?
Answers:
120 s
240s
30 s
60 s(when I did my calculation for the question above, I got 60 seconds)
What radionuclide decays to Fe-56
by beta emission?
Answers:
Fe
Co
Mn
Co
MnHow do I know wat it becomes. I put 57 Co 27 and it's wrong.
The Cf
to Cf
conversion is accompanied by __________.
Answers:
an alpha
emission
a
neutron capture
an electron
capture
an electron releaseI would greatly appreciate your help...ASAP. Thank you.
The reaction is at equilibrium at 1,000 K. The equilibrium constant of the reaction is 3.90. At equilibrium, the concentrations are as
follows.
[CO] = 0.30 M
[H2] = 0.10 M
[H20] = 0.020 M
What is the equilibrium concentration of CH, expressed in scientific notation?
0.0059
5.9 x 10-2
0.059
5.9 x 102
Answer: The equilibrium concentration of , expressed in scientific notation is
Explanation:
Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients.
The given balanced equilibrium reaction is,
At eqm. conc. (0.30) M (0.10) M (x) M (0.020) M
The expression for equilibrium constant for this reaction will be,
Now put all the given values in this expression, we get :
By solving the term 'x', we get :
x = 0.059 M=
Thus, the concentrations of at equilibrium is :
Concentration of = (x) M =
The equilibrium concentration of , expressed in scientific notation is
Answer:B
Explanation:B