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Nesterboy [21]
2 years ago
7

Members of which group easily lose an electron to form a +1 cation? halogens alkaline earth metals noble gases alkali metals

Chemistry
2 answers:
sp2606 [1]2 years ago
7 0

I think the correct answer from the choices listed above is option D. Members of the alkali metals easily lose an electron to form a +1 cation. The halogens represents element like F, Cl which easily gain an electron. Alkaline earth metals represents element like Mg, Ca which easily lose two electrons.

Kryger [21]2 years ago
5 0

Answer:

D. Members of the alkali metals easily lose an electron to form a +1 cation. The halogens represents element like F, Cl which easily gain an electron. Alkaline earth metals represents element like Mg, Ca which easily lose two electrons.

Explanation:

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Four moles of Argon gas are at a pressure of 1.90 atm, and the temperature is 50 degrees C. What is the volume of the gas?
soldier1979 [14.2K]
N = 4 moles of Ar2, P = 1.90 atm, V = ?
T = 50C = 273 + 50K = 323K
PV = nRT --> V = nRT/P
V = (4)(.0821)(323)/1.90
V = 106.07/ 1.9
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4 0
2 years ago
What is the value of delta Hrxn for this equation:
Ratling [72]

Answer:

The ΔHrxn for the above equation = 179 kJ/mol

Explanation:

The reaction bond enthalpies are for the reactant;

3 × N-H = 3 × 390 = 1,170 kJ/mol

2 × O=O = 2 × 502 = 1004 kJ/mol

The reaction bond enthalpies are for the product;

3 × N-O = 3 × 201 = 603 kJ/mol

3 × O-H = 3 × 464 = 1,392 kJ/mol

The ΔHrxn for the above equation is therefore;

ΔHrxn = 1,170 + 1,004 - (603 + 1,392) = 179 kJ/mol

6 0
2 years ago
The chemical reaction involving an acid and a base or alkali is know as a ​
saul85 [17]

Ans

Neutralization reaction

Explanation:

The meaning is

acid + base = salt + water

5 0
3 years ago
Read 2 more answers
In the sixteenth century, the geocentric theory was a daim with substantial evidence. Which of the following best describes why
Ronch [10]

Answer:

The heliocentric theory was better supported by data explaining the rotation of the planets and other bodies in the solar system.

Explanation:

3 0
2 years ago
A cube of tin that is 112 mm on each side has a mass of 8.21 grams. A single tin atom has a mass of 118.7 amu. How many tin atom
Sveta_85 [38]

Answer:

4.17e+22 atoms of tin are present in the cube

Explanation:

We don't require the size of the cube. With the mass and the molar mass of tin = 118.7 amu we can find moles of Tin. As 1 mol = 6.022x10²³ atoms we can find the number of atoms:

<em>Moles Tin:</em>

8.21g * (1mol / 118.7g) = 0.0692 moles Tin

<em>Atoms Tin:</em>

0.0692 moles Tin * (6.022x10²³ atoms / mol) =

<h3>4.17e+22 atoms of tin are present in the cube</h3>
5 0
2 years ago
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