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Yuri [45]
2 years ago
11

Electronegativities of the elements Be, Mg, Ca, and Sr follow a specific trend within their group. Based on this trend, the atom

s of which element will have the least attraction for an electron?
Be
Mg
Ca
Sr
Chemistry
2 answers:
Travka [436]2 years ago
7 0

Answer:

Sr

Explanation:

vodomira [7]2 years ago
6 0

Answer:

Sr

Explanation:

Electronegativity decreases down a group, therefor the one closer to the bottom will have the least attraction for an electron

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If  O2(g) reacts with H2(g) to produce  H2O, what is the volume of H2O obtained from 1 L of O2?
joja [24]

Answer:

2L

Explanation:

We'll begin by writing the balanced equation for the reaction this is illustrated below:

2H2 + O2 —> 2H2O

1 mole of a gas occupy 22.4L.

1 mole of O2 occupy 22.4L.

2 moles of H2O occupy = 2 x 22.4 = 44.8L.

From the balanced equation above,

22.4L of O2 produced 44.8L of H2O.

Therefore, 1L of O2 will produce = 44.8/22.4 = 2L.

Therefore, 1L of O2 will produce 2L of H2O.

7 0
3 years ago
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Give an example where handpicking is used for separation. (1)​
dimulka [17.4K]

Answer:

If you want to separate black grapes from the mixture of black and green grapes, then you will simply pick black grapes using your hands from the mixture. In this way you are actually using handpicking separation method.

Explanation:

5 0
2 years ago
Balancing chemical equations
mojhsa [17]

<span>2H2 + O2 → 2H2O</span>

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4 0
3 years ago
The p-value of a statistical test depends on all of the following, except:
vaieri [72.5K]

Answer:

The correct option is e.

Explanation:

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For two two samples the formula of test statistics is

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n is sample size.

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Therefore the correct option is e.

4 0
2 years ago
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