1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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 (+)

You might be interested in
A gas occupies 100 mL at 150. kPa. Find its volume at 200. kPa. You must show all your work to receive credit. Be sure to identi
PtichkaEL [24]

The Boyle-Mariotte's law or Boyle's law is one of the laws of gases that <u>relates the volume (V) and pressure (P) of a certain amount of gas maintained at constant temperature</u>, as follows:

PV = k

where k is a constant.

We can relate the state of a gas at a specific pressure and volume to another state in which the same gas is at different P and V since the product of both variables is equal to a constant, according to the Boyle's law, which will be the same regardless of the state of the gas. In this way,

P₁V₁ = P₂V₂

Where P₁ and V₁ is the pressure and volume of the gas to a state 1 and P₂ and V₂ is the pressure and volume of the same gas in a state 2.

In this case, in the state 1 the gas occupies a volume V₁ = 100 mL at a pressure of P₁ = 150 kPa. Then, in the state 2 the gas occupies a volume V₂ (that we must calculate through the boyle's law) at a pressure of P₂ = 200 kPa.  Substituting these values in the previous equation and clearing V₂, we have,

P₁V₁ = P₂V₂ → V₂ = \frac{P1V1}{P2}  

→ V₂ = \frac{100 mL x 150 kPa}{200 kPa}

→ V₂ = 75 mL

Then, the volume occupied by the gas at 200 kPa is V₂ = 75 mL

6 0
3 years ago
Which statement best describes the amount of catalyst that remains at the end of a reaction?
Ivenika [448]
I believe the correct answer is C. The amount of catalyst is the same at the end as at the beginning of the reaction. Catalysts can't be consumed by the reaction thus is not D.
7 0
3 years ago
Read 2 more answers
A 270.0 gram piece of copper is dropped into 300.0 grams of water 24.00 °C. If the final temperature of water is 42.00 °C, what
Papessa [141]

Answer:

257

Explanation:

Just finished the test

4 0
3 years ago
16.6g CaCl2 dissolved in water and completely dissociates. The molality of chloride ions in 300g of water is
vova2212 [387]

Answer:

— The molality of chloride ions in 300g of water is. A) 1.00 molal. B) 0.500 molal. C) 0.0553 molal. D) 0.111 molal.

3 0
2 years ago
Insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. A bottle contains 525 mL of insu
Mrrafil [7]
Multiply
525 x 40.0 for the total mass (amount) of insulin in the bottle.

Answer: 21,000.0

That is one BIG bottle of insulin!!
7 0
3 years ago
Other questions:
  • Element X reacts with hydrogen gas at 200°C to form compound Y. When Y is heated to a higher temperature, it decomposes to the e
    15·1 answer
  • The activation energy for the isomerization ol cyclopropane to propene is 274 kJ/mol. By what factor does the rate of this react
    6·2 answers
  • Which element is reduced in the reaction below?<br><br> A. Na<br> B. CI<br> C. Ba<br> D. None
    8·2 answers
  • Problem PageQuestion A chemistry student needs 10.0g of dimethyl sulfoxide for an experiment. By consulting the CRC Handbook of
    6·1 answer
  • What determines the reactivity of an akali metal?
    14·1 answer
  • Scientists have speculated that element 126 might have a moderate stability allowing it to be synthesized and characterized. Pre
    12·1 answer
  • Which of the following is NOT a way in which minerals are formed?
    5·1 answer
  • I need help I tried many times and I don’t get it
    11·1 answer
  • A scientist performed an experiment with a mouse where the mouse was moving along a track with a new experimental unscented chee
    14·1 answer
  • Why can you see a corona during a total solar eclipse?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!