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
likoan [24]
3 years ago
7

Describe, in terms of electrons, the difference between a calcium atom and a calcium ion

Chemistry
1 answer:
DanielleElmas [232]3 years ago
3 0

The Calcium atom has 2 valence electrons but a Calcium ion will have no electrons because it is a cation ion. Meaning that there are more protons than electrons. Also, the normal calcium symbol is Ca but the calcium ion is Ca²⁺

I hope this wasn't too late

You might be interested in
How many moles of NH4NO3(s) must be dissolved in water so that 73.0 kJ of heat is absorbed from the water? (The molar heat of so
SCORPION-xisa [38]
1 mole of NH4NO3 requires absorption of 25.7 kJ/mol.
Therefore; 1 kJ of heat energy is absorbed by dissolving 1/25.7 moles of NH4NO3. 
Hence; For an energy of 73.0 kJ to be absorbed the moles of NH4NO3 that dissolves will be;
 = (1/25.7 × 73)
 = 2.84 moles
Hence; 73 kJ is absorbed by dissolving 2.84 moles of NH4NO3.

7 0
3 years ago
Read 2 more answers
How are mutations different? Provide examples.
Murljashka [212]

Answer:

sdoawjdiowadawoi siokdwajsiokwjDIWIAdawidjaskmdnkawdjad kadakwdkawdawhdaw

Explanation: im smart

4 0
3 years ago
Read 2 more answers
Which type of fire is sometimes set as a way to protect a forest?
leva [86]
<h3><u>Answer;</u></h3>

Surface fire

<h3><u>Explanation;</u></h3>
  • <u>Surface fires are type of forest fires that may burn primarily as a surface fire,</u> spreading along the ground as the surface litter and undergrowth on the forest floor and is engulfed by the spreading flames.
  • They are the easiest fires to put out and cause the least damage to the forest. Surface fires create the least amount of destruction.
  • <em><u>These fires protects the forest by releasing the nutrients that would otherwise decompose slowly, having little benefit to the ecosystem.</u></em>
  • <em><u>Additionally, these fires allow more open spaces for new and different kinds of vegetation to grow and receive sunlight.</u></em>
3 0
3 years ago
What is the total number of moles of O2(g) that must react completely with 5.00 moles of C4H10(g)?
Naddika [18.5K]

Answer:

32.5 moles of O2(g) are necessaries for a complete reaction

Explanation:

Based on the reaction of combustion of C4H10(g):

C4H10(g) + 13/2 O2(g) → 4CO2(g) + 5H2O(g)

<em>1 mole of C4H10 needs 13/2 moles O2 for a complete reaction.</em>

<em />

That means, the moles of O2 required for a reaction of 5.00 moles of C4H10 are:

5.00 moles C4H10 * (13/2mol O2 / 1mol C4H10) =

32.5 moles of O2(g) are necessaries for a complete reaction

4 0
3 years ago
When did the Big Bang occur ?
scZoUnD [109]

13.8 billion years ago

This relic radiation is known as the cosmic microwave background radiation. The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the universe was only 10–17 million years old.

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is a mitochondrion
    10·2 answers
  • According to Reference Table J, which of these metals will react mostreadily with 1.0 M HCl to produce H2(g)?(1) Ca (3) Mg(2) K
    10·2 answers
  • A solution is prepared by dissolving 7.00 g of glycerin (C3H8O3) in 201 g of ethanol (C2H5OH). The freezing point of the solutio
    13·1 answer
  • In the equation below, suppose 11 grams of zinc react with 12 grams of hydrogen chloride to form 16 grams of zinc chloride and a
    6·1 answer
  • What is the state of the mantle
    14·1 answer
  • What mass of Hg will occupy a volume of 75.0 mL?
    9·1 answer
  • (1,632) (4.0 x 10⁴) =
    8·2 answers
  • How many moles of NaOH are contained in 27 mL of 0.15 M NaOH? (Atomic mass: Na=23 u , O =16 u , H =1 u) *
    12·1 answer
  • *20 points* Pls answer questions in a positive way NO LINKS NO FILES Thank you
    9·2 answers
  • how did the gross colors (continuous spectrum imparted to the flame by the metal ion solutions compare with the individual spect
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!