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Marysya12 [62]
3 years ago
5

In the laboratory, an unknown element X reacts with fluorine. The following ionic compound is obtained: XF.

Chemistry
2 answers:
erma4kov [3.2K]3 years ago
6 0

Answer:

Halogen

Explanation:

Because it belongs to the group 7 on the periodic table

nika2105 [10]3 years ago
6 0

Answer:

alkali metals

Explanation:

Fluorine is highly reactive and has an almost full outer shell, therefore, it wants to quickly gain an electron to fill its putter shell. The best materials to reach with are ones that have one electron in their outer shell.

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1. A gas has a pressure of 799.0 mm Hg at 50.0 degrees C. What is the temperature at standard Pressure?
larisa [96]

Answer:

A = 674.33mmHg

B = 0.385atm

Explanation:

Both question A and B requires the application of pressure law which states that the pressure of a fixed mass of gas is directly proportional to its temperature provided that volume is kept constant.

Mathematically,

P = kT, k = P / T

P1 / T1 = P2 / T2 = P3 / T3 =.......= Pn/Tn

A)

Data:

P1 = 799mmHg

T1 = 50°C = (50 + 273.15) = 323.15K

P2 = ?

T2 = 273.15K

P1 / T1 = P2 / T2

Solve for P2

P2 = (P1 × T2) / T1

P2 = (799 × 273.15) / 323.15

P2 = 674.37mmHg

The final pressure is 674.37mmHg

B)

P1 = 0.470atm

T1 = 60°C = (60 + 273.15)K = 333.15K

P2 = ?

T2 = 273.15K

P1 / T1 = P2 / T2

Solve for P2,

P2 = (P1 × T2) / T1

P2 = (0.470 × 273.15) / 333.15

P2 = 0.385atm

The final pressure is 0.385atm

7 0
3 years ago
Read 2 more answers
Which of the following occurs when sodium and chlorine bond together to form sodium
Mumz [18]
(a) chlorine gains an electron from a sodium atom
7 0
2 years ago
Analyze the given diagram of the carbon cycle below. An image of carbon cycle is shown. The sun, a cloud, two trees, one towards
Paul [167]

Answer:

Arrow a represents photosynthesis. 2 it transforms sunlight, water, and carbon dioxide into gluton, or food for the plants. 3 It recycles carbon because humans breath in oxygen and exhale carbon dioxide, plants then take in the carbon and exhale oxygen.

Explanation:

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3 years ago
Do you have quantitative data (numerical results or calculations)? Do you have qualitative data (written observations and descri
professor190 [17]

Answer:

You'll have to record the observations in appropriate ways and organize them The way you collect your data should relate to how you're planning to analyze and use it These might for instance include entering numerical observations into a  Qualitative data are collected as descriptions anecdotes opinions quote

Explanation:

8 0
3 years ago
onsider the following unbalanced chemical equation for the reaction which is used to determine blood alcohol levels: H1+ + Cr2O7
Naddika [18.5K]

Answer:

Chromium is reduced in forward reaction

Explanation:

A species is said to be oxidized if oxidation number of the species increases.

A species is said to be reduced if oxidation number of the species decreases.

Oxidation number of Cr in Cr_{2}O_{7}^{2-} = +6

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So change in oxidation number of Cr in forward reaction = (+3)-(+6) = -3

Hence oxidation number of Cr decreases on going from  Cr_{2}O_{7}^{2-} to  Cr^{3+}.

So, chromium is reduced in forward reaction.

4 0
4 years ago
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