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kotykmax [81]
3 years ago
10

Explain why the elements in group 7 have 7 valence electrons.

Chemistry
1 answer:
Citrus2011 [14]3 years ago
6 0

Answer:

The periodic table was made that way by the scientists who created it

Explanation:

to make things easier for the users.

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Electronegativities of the elements Be, Mg, Ca, and Sr follow a specific trend within their group. Based on this trend, the atom
Travka [436]

Answer:

Sr

Explanation:

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3 years ago
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The leaves of plants contain specialized parts that absorb energy from sunlight. Which feature would help a plant
Ber [7]

Chlorophyll  pigment found in chloroplast of leaves absorbs sunlight.

The plants has a technique in which they lean towards sunlight which helps them better to compete for sunlight.

Explanation:

The leaves of the plant consist of chloroplasts in which light absorbing pigment chlorophyll is found. The chloroplast consist of thylakoid where light reaction of photosynthesis takes place.

The presence of chlorophyll a in large amount would help plant better use the sunlight this amounts to increase number of chloroplast.

Leaning towards the sunlight is feature which helps them using more sunlight.

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3 years ago
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Janice bought 40 shares of stock at $31.82 per share. She received dividends of $1.11 per share for 1 year. (Do not use commas,
Alborosie

Answer:

  • $30.71 per share

Explanation:

The <em>purchase price</em> is what Janice invested for every share.

Since the stock was priced at $31.82 per share and she received a $1.11 dividend per share, her investment was:

  • $31.82 - $1.11 = $30.71 per share ← answer

This price is the cost for Janice, over which she shall calculate their returns (gains or losses) on the future, when she sells the shares, for instance.

The total investment of Janice was the number of shares multipled by the purchase price:

  • 40 shares × ($31.82 -  $1.11)/ share
  • 40 shares × ($30.71) / share = $1,228.40 (total investment)
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3 years ago
A rectangular solid has a length of 3 cm a height of 4 cm and a width of 5 cm what is the solid volume ?
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An investigation into an unknown object in space resulted in the following observations:
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