Chemistry, 25.08.2019 01:30 lathwkuster

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 . you.

Answers: 1

Show answers

Answers

Bombarding sodium-23 with a proton produces nuclide X and a neutron. What is nuclide X?

$^{23}_{11}Na--^{\beta^+}-- ^{23}_{10}Ne + e^{+}$

neon
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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?

0 days >>> 1.00g
14,3 days >>> 1.00g :2 = 0,5g
(14.3+14.3) days >>> 0.5g : 2 = 0.25g
(14.3+14.3+14.3) days >>> 0.25g : 2 = 0.125g

0.125g
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Identify X in the reaction
below.
U + C → Cf + X

$^{238}_{92}U --- ^{251}_{98}Cf+6e^-$

6 electrons (so it's beta⁻)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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.

at the beginning >>> 0.20g
1 half-live >>> 0.20g : 2 = 0.10g
2 half-live >>> 0.10g : 2 = 0.05g
3 half-live >>> 0.05g : 2 = 0.025g

0.025g
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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?

0 s (at the beginning) >>> 48mg
30s >>>>>>>>>>>>>>> 48mg : 2 = 24mg
(30+30)s >>>>>>>>>>> 24mg : 2 = 12mg
(30+30+30)s >>>>>>>> 12mg : 2 = 6mg
(30+30+30+30)s >>>>> 6mg : 2 = 3mg

30+30+30+30 = 120s
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
What radionuclide decays to Fe-56 by beta emission?

$^{56}_{26}Fe--^{\beta^-}--^{56}_{27}Co + e^-$

⁵⁶₂₇Co
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The Cf to Cf conversion is accompanied by __________.

Cf to Cf ???? maybe...mistake?

Answer from: Quest

Answer is to avoid experimental error

Answer from: Quest

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

Another question on Chemistry

Chemistry, 22.06.2019 03:30

Predict the products butane (c4h10) + oxygen —>

Answers: 1

Answer

Chemistry, 22.06.2019 10:30

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature

Answers: 1

Answer

Chemistry, 22.06.2019 14:00

What was bohr’s contribution to the planetary model

Answers: 1

Answer

Chemistry, 22.06.2019 21:30

The solid xy decomposes into gaseous x and y: xy(s) m x(g) + y(g) kp = 4.1 (at 0 °c) if the reaction is carried out in a 22.4 l container, which initial amounts of x and y will result in the formation of solid xy?

Answers: 1

Answer

You know the right answer?

bombarding sodium-23 with a
proton produces nuclide x and a neutron. what is nuclide x?

Questions