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3 years ago

Where are calcium ions (Ca2+) stored in the body?

Chemistry

2 answers:

ANTONII [103]3 years ago

5 0

Calcium is stored in bones in the body

padilas [110]3 years ago

3 0

Your bones contain a large amount of calcium. thats why you drink milk to make them strong!!

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0.0200 M Fe3+ is initially mixed with 1.00 M oxalate ion, C2O42-, and they react according to the equation: Fe3+(aq) + 3 C2O42-(

Studentka2010 [4]

Answer : The concentration of $Fe^{3+}$ at equilibrium is 0 M.

Solution : Given,

Concentration of $Fe^{3+}$ = 0.0200 M

Concentration of $C_2O_4^{2-}$ = 1.00 M

The given equilibrium reaction is,

$Fe^{3+}(aq)+3C_2O_4^{2-}(aq)\rightleftharpoons [Fe(C_2O_4)_3]^{3-}(aq)$

Initially conc. 0.02 1.00 0

At eqm. (0.02-x) (1.00-3x) x

The expression of $K_c$ will be,

$K_c=\frac{[[Fe(C_2O_4)_3]^{3-}]}{[C_2O_4^{2-}]^3[Fe^{3+}]}$

$1.67\times 10^{20}=\frac{(x)^2}{(1.00-3x)^3\times (0.02-x)}$

By solving the term, we get:

$x=0.02M$

Concentration of $Fe^{3+}$ at equilibrium = 0.02 - x = 0.02 - 0.02 = 0 M

Therefore, the concentration of $Fe^{3+}$ at equilibrium is 0 M.

4 0

3 years ago

In the following reaction, how many liters of oxygen will react with 270 liters of ethene (C2H4) at STP?

lawyer [7]

According to the equation you have 1 mole of C2H4 and 3 moles of O2.

1 • (22.4L / 270L) = 3 • (22.4L / x)

1/270L = 3/x

x = 3(270) / 1

x = 810 L

810 Liters of oxygen will react with 270 liters of ethene (C2H4) at STP

4 0

3 years ago

List three of Rutherford’s major achievements that helped earn him the title “Father of Nuclear Physics.”

Minchanka [31]

Discovered the necleus
proposed the proton existence
discovered fusion reaction from fission

5 0

3 years ago

Describe connective tissue. What are functions of this tissue

tester [92]

Connective tissue is one of the four different types of tissues. It consists of cells suspended in a matrix, and consist of fibres running through it. It’s main job is to connect internal tissues. They also support and protect internal organs. Examples include cartilage, blood, lymph and adipose tissue.

6 0

3 years ago

Read 2 more answers

What is alchemy?

Naily [24]

Answer: A. An early form of chemistry that people used to try to turn metal

into gold.

Explanation:

Alchemy is indeed an early form of chemistry in which people try to turn metal into gold.

6 0

3 years ago