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3 years ago

Which atoms will bond when valence electrons

2 answers:

7 0

Since Oxygen is in group 16, this element has 6 valence electrons. Valence electrons like to become as stable as possible and similar to a noble gas, which has 8 electrons. You need to find an element that will transfer its atoms to the oxygen to make 8 electrons. Looking at the periodic table, Selenium is in group 16 and will have 6 valence electrons (6 + 6 = 12). This can't transfer electrons with Oxygen. Hydrogen is in group 1 with 1 valence electron (6 + 1 = 7). This can't transfer electrons with Oxygen. Strontium is in group 2 with 2 valence electrons (6 + 2 = 8). This will transfer electrons to Oxygen, making it the most stable.

The answer is O and Sr.

kvasek [131]3 years ago

3 0

Because the problem says valence electrons are transferred from one atom to the other, it has to be an "ionic" bond (it's not the "covalent" bond because electrons aren't shared with each other). As a matter of fact, an "ionic" bond is formed when a metal combines with a non-metal or a metalloid. Strontium (Sr) is an alkaline earth metal, which is also a metal, and Oxygen (O) is a non-metal. These two atoms will perfectly form (an) "ionic" bond(s). Therefore, option (2) O and Sr is correct.
Hope this would help :))

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Scientists have found a large crater, containing minerals not common on Earth. Radioactive dating has determined that the crater

Paraphin [41]

answer D) VP# 1 and 3

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3 years ago

Solve the equation for n 0.0092=0.608 x (n/84.01)+n/52.5

kotegsom [21]

Answer:

$n\approx 0.350$

Explanation:

1. Rewrite the equation in a more appropriate format for a better understanding:

$0.0092=0.608\times \dfrac{n}{84.01}+\dfrac{n}{52.5}$

2. Multiply the whole equation (both sides) by 84.01 × 52.5 to eliminate the denominators:

$0.0092\times 84.01\times 52.5=0.608\times 52.5n+84.01n$

3. Do the operations:

$40.57683=31.92n+84.01n$

4. Add like terms:

$40.57683=115.93n$

5. Divide both sides by 115.93:

$0.350011\approx n\\\\n\approx 0.350011\\\\n\approx 0.350$

3 0

4 years ago

Which of the following statements is true?

mr_godi [17]

Answer:

C. A technology society has both a positive and negative impact on the environment

Explanation:

We are using up earth's resources but bettering social society!

Have a nice day,

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3 years ago

When a mixture of glucose 6-phosphate and fructose 6-phosphate is incubated with the enzyme phosphohexose isomerase, the final m

Anastasy [175]

Answer:

The correct option is B

Explanation:

The reaction is given as

$Glucose\ 6-phosphate ---->fractose \ 6-phosphate$

The equilibrium constant for this reaction is mathematically represented as

$K_c = \frac{[concentration \ of \ product ]}{concentration \ of \ reactant } = \frac{[fructose \ 6 -phosphate]}{[Glucose \ 6 - phosphate]}$

From the question we are told that

[Glucose 6-phosphate] = 2 × [fructose 6-phosphate]

$K_c = \frac{[fructose \ 6 -phosphate]}{[2 (fructose \ 6 -phosphate)]} = 0.5$

Generally change in free energy $\Delta G$ is mathematically represented as

$\Delta G = - RTlnK_c$

Given that T = 298 K

R = 8.315 J/mol·K

$\Delta G = -8.314 * 298 * ln (0.5)$

$= -1717.32 J/mol$

$= -1.7 \ kJ/mol$

5 0

3 years ago

Read 2 more answers

How does the sharklet film protect against bacteria?

babunello [35]

Answer:

The sharklet film creates a phenomenon reffed to as mechanotransduction.

Explanation:

It was discovered that sharks do not experience fouling , their skin is made in a distinct manner with diamond patterns that will discourage micro organism from settling on it.

Through the process of mechanotransduction, mechanical stress is created to the bacteria whereby they cannot attach themselves to the surface because it makes them to produce more energy to settle on the surface thus they may keep off from the surface. In this manner, bacteria is inhibited from attacking these areas protected by the sharklet film.

5 0

3 years ago