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Sliva [168]
2 years ago
10

What element has 25 electrons transition element

Chemistry
2 answers:
kolbaska11 [484]2 years ago
8 0
Manganese has 25 electrons and is a transition element
galina1969 [7]2 years ago
8 0

Answer:

Manganese  

Explanation:

Manganese is a chemical element with symbol Mn and atomic number 25. Classified as a transition metal, Manganese is a solid at room temperature. :)

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Charles's law is an experimental gas law that shows the relationship between the temperature of a gas and its corresponding volu
iren [92.7K]

Answer:

The correct answer is (b)

Explanation:

Charles law describes the behavior of gases when heated. Charles law states that the volume of a given mass of gas would increase as its Kelvin temperature increases provided the pressure is held constant. That is the volume of a given mass of gas is directly proportional to its Kelvin temperature at constant pressure

3 0
3 years ago
Suggest a method for measuring the size of the colony.
Evgen [1.6K]

Answer:

Counting the number of colonies that arise on a pour plate can calculate the concentration by multiplying the count by the volume spread on the pour plate. Direct counting methods are easy to perform and do not require highly specialized equipment, but are often slower than other methods

Explanation:

I hope it will help you

7 0
3 years ago
A high consideration of hydrogen ions is a solution of what
wlad13 [49]
A positive change atom of hydrogen-ion. A normal hydrogen atomic nucleus
6 0
3 years ago
When the reaction
yaroslaw [1]
We can express the rate equation in this form:
-r = k A^n B^m

where -r is the rate
k is the rate constant,
A is the concentration of CH3Cl
n is the order with respect to CH3Cl
B is the concentration of H2O
m is the order with respect to H2O

We can solve this by trial and error or by calculus. The first method is easier. The rate constant does not depend on the concentration of the reactant. Assume values of n and m and solve for k in each experiment. The only option that gives really close values of k in each experiment is:
<span>C. CH3Cl: firstorder H2O: second order
</span>
3 0
3 years ago
A mass spectrometer is being used to monitor air pollutants. It is difficult, however, to separate molecules with nearly equal m
tatyana61 [14]

Answer:

4.2 m

Explanation:

The energy (E) of the selector region of the spectrometer is:

E = v*B (equation 1)

Where v is the velocity, and B the magnetic field.

The force with which particle forms a curved path can be calculated by:

\frac{mv^2}{r} = qB'

Where r is the radius of the particle, m is the mass, and q the electric charge. So:

r = \frac{mv}{qB'}

For equation 1: v = E/B, so:

r = \frac{mE}{qBB'}

The two species will be separated by Δr = 0.42 mm

Δr = Δm*E/(q*B*B')

E/(q*B*B') = r/m

Δr = Δm*r/m

r = m*Δr/Δm

r is the large of curvature, m is the avarege mass = (28.0106 + 28.0134)/2 = 28.012:

r = (28.012*0.42)/(28.0134 - 28.0106)

r = 11.76504/(0.0028)

r = 4201.8 mm

r = 4.2 m

3 0
3 years ago
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