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VARVARA [1.3K]
3 years ago
5

Which of the following places the elements in the correct order of increasing first ionization energy?

Chemistry
1 answer:
-BARSIC- [3]3 years ago
4 0
Be, Mg, Ca increasing first ionization energy
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What’s the answer??????
atroni [7]

Answer:

A evaperation

Explanation:

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7 0
3 years ago
Which best characterizes a crystal?
White raven [17]
A high - energy state of matter made up of a swirling, ionized gas

Halite crystal is growing and can attach very quickly and eventually form a smooth, stable faces where new atoms can easily attach themselves.
8 0
3 years ago
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At high temperatures, sulfur combines with iron to form brown-black iron(II) sulfide:
taurus [48]

The percent yield : 79.9%

<h3>Further eplanation </h3>

Percent yield is the comparison of the amount of product obtained from a reaction with the amount you calculated

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

An actual yield is the amount of product actually produced by the reaction. A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients

Reaction

Fe(s)+S(s)⇒FeS(s)

The reaction produces 6.29 g of iron(II) sulfide⇒an actual yield

The maximum  amount that can be produced is 7.87 g ⇒ A theoretical yield

\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\\%yield=\dfrac{6.29}{7.87}\times 100\5=79.9\%

3 0
3 years ago
Consider the following chemical equilibrium: Now write an equation below that shows how to calculate from for this reaction at a
borishaifa [10]

Answer:

Kp=Kc *(RT)+-3

Explanation:

The relation between Kp and Kc is given below:

Where,

Kp is the pressure equilibrium constant

Kc is the molar equilibrium constant

R is gas constant , R = 0.082057 L atm.mol⁻¹K⁻¹

T is the temperature in Kelvins

Δn = (No. of moles of gaseous products)-(No. of moles of gaseous reactants)

For the first equilibrium reaction:

Δn = (0)-(2+1) = -3

Thus, Kp is:

Kp=Kc *(RT)+-3

6 0
3 years ago
Does Moseley's assertions about the arrangement of elements _________ Mendeleev's earlier work on the periodic table?
Alecsey [184]
I believe it’s discarded because Moseley rearranged the elements by the number of protons is instead of atomic weight like Mendeleev did
7 0
3 years ago
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