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nordsb [41]
3 years ago
13

How many electrons will calcium gain or lose in forming an ion

Chemistry
1 answer:
matrenka [14]3 years ago
7 0

Answer:

Calcium can lose 2 electrons to make the ion calcium, following this equation:

Ca → Ca2⁺  + 2e⁻

Explanation:

Calcium is the third element of group TWO in the periodic table. As it belongs to group two, it means that can lose 2 electrons to get the noble gas configuration that corresponds. It is a metal from the group of alkali earth metals.  

Since its tendency is to lose electrons, it is said to form charged ions (+)

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2 years ago
Convert 1.65 × 1024 atoms of carbon to moles of carbon.
gogolik [260]
The number of moles in a substance indicates the amount of the substance that contains the same number of particles as 12 g of the Carbon-12 isotope [or equivalent to 6.02 × 10²³] (which is used as a standard in the world of moles).

Now,

          if     6.02 × 10²³ atoms are found in 1 mole of C
   then let  1.65 × 10²⁴ atoms are found in     x

⇒     x  =    (1.65 × 10²⁴)  ÷  (6.02 × 10²³)

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<span>

A sample of 1.65 × 10
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6 0
3 years ago
Place the longitude coordinates in the order of a one-way journey from east to west. Please help ASAP
Lelechka [254]

The order in which the coordinates would go is as follows:

  • 163° 4'38'' E
  • 45° 10' 3'' E
  • 45° 7' 12'' E
  • 28° 51' 55'' W
  • 90° 23' 1'' W  
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When moving from the East to the West, you would be approaching to Prime Meridian which is 0°. This means that for longitudinal lines marked as "°E" their value would keep dropping till they get to the Prime Meridian.

This is why the first "°E" in the order is larger than the last one.

When you pass the Prime Meridian and begin going west, the numbers will keep increasing and this is why the first line marked "°W" is lower than the last number.

In conclusion, lines of longitude are change differently as one travels past the prime meridian.

Find out more about the Prime Meridian at brainly.com/question/98965.

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2 years ago
A branching tree diagram begins with the
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The idea behind a tree diagram is to start on the left with the whole thing, or one. Every time several possible outcomes exist the probability in that branch splits off into a smaller branch for each outcome.
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3 years ago
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