1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
JulijaS [17]
2 years ago
5

How many electrons are in the n = 2 shell of a magnesium atom?

Chemistry
1 answer:
Montano1993 [528]2 years ago
8 0

Answer:

eight

Explanation:

That means there are 12 electrons in a magnesium atom

hope this helps

You might be interested in
Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife​
yuradex [85]

Answer:

\boxed{\text{2408 min}}

Explanation:

The integrated rate law for radioactive decay is

\ln\dfrac{N_{0}}{N_{t}} = kt

1. Calculate the decay constant

\begin{array}{rcl}\ln \dfrac{100}{90} & = & k \times 366\\\\1.054 & = & 366k\\\\k & = & \dfrac{1.054 }{366}\\\\k & = & 2.879 \times 10^{-4} \text{ min}^{-1}\\\end{array}\\\\

2. Calculate the half-life

t_{\frac{1}{2}} = \dfrac{\ln2}{k}\\\\t_{\frac{1}{2}} = \dfrac{\ln2}{2.879 \times 10^{-4} \text{ min}^{-1}} = \text{2408 min}\\\\\text{The half-life for decay is } \boxed{\textbf{2408 min}}

8 0
3 years ago
If the equation CO(g) + 2H2(g) →← → ← CH3OH(g) + energy is for a system at equilibrium, increasing the temperature will cause __
Eddi Din [679]

Answer:

[CH₃OH] to decrease and [CO] to increase.

Explanation:

  • Since the energy appears as a product. So, the system is exothermic that releases heat.
  • Increasing the temperature of the system will cause the system to be shifted to the left side to attain the equilibrium again.
  • So, the right answer is:

<em>[CH₃OH] to decrease and [CO] to increase.</em>

<em></em>

6 0
3 years ago
What STARTING element undergoes alpha decay to yield uranium-234 (U) as a PRODUCT?
nadezda [96]
Uranium-238 is the element that undergoes decay to yield uranium-234
3 0
2 years ago
Gold alloys are _____.
chubhunter [2.5K]
Gold alloys consist of most commonly Nickel! 
Most commonly used in things like jewelry so it doesn't have such a heavy weight.
7 0
2 years ago
A car is traveling at a speed of 65 mi/h. How long does it take to cover a distance of 235 m?
fgiga [73]

Answer:

It will take 8.09 seconds to cover 235 meters by car with speed of 65 mile/h.

Explanation:

Speed of the car = 65 mile/h = 65  1609.34 m/h = 104,607.1 m/h

1 mile = 1609.34 m

Distance covered by the car in t time = 235 m = mile

Speed-\frac{Distance}{Time}

104,607.1 m/h=\frac{\frac{235}{1609.34} mile}{t}

t=\frac{235 m}{104,607.1 m/h}

t = 0.002246 h

1 hour = 3600 seconds

0.002246 h = 0.002246 h × 3600 seconds = 8.09 seconds

It will take 8.09 seconds to cover 235 meters by car with speed of 65 mile/h.

5 0
3 years ago
Other questions:
  • Peptides can be separated using an ion‑exchange column based on their isoelectric (pI) values. At which pH values would two diff
    12·1 answer
  • 42 At standard pressure, the total amount of heat required to completely vaporize a 100. gram sample of water at its boiling poi
    7·1 answer
  • Why does the person keep moving even though the car stopped??
    9·1 answer
  • What is going on at the molecular level as liquid lauric acid cools and freezes?
    7·1 answer
  • How might a geologist measure the distance of the earth movement along a fault line from a divergent plate tectonic?
    15·1 answer
  • The energy diagram shown represents the chemical reaction between solid ammonium chloride and solid barium hydroxide octahydrate
    8·1 answer
  • Which of the following is a homogeneous mixture?
    7·1 answer
  • How do we separate cork and lead​
    14·1 answer
  • Which statement BEST describes what happens during solvation?
    8·1 answer
  • But you're so prideful, yeah, prideful
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!