Our body needs iron. Certain foods are rich in iron and iron tablets are usually recommended by doctors. but neither the food nor tablets are hard like iron? Why?

Answers

Answer 1

Answer: If the food and the tablets would be hard then how will the body digest it

Answer 2

Answer: because it would not be possible to eat them if they would be hard

Related Questions

The periodic table is based on an element's A. atomic mass. B. atomic number. C. molecular mass. D. molecular size.
Which of these is an appropriate instrument to measure mass? balance, burette, ruler, graduated cylinder
Compare the three subatomic particles in terms of location in the atom mass and relative charge
Given the reaction:NH3 + HCl --> NH4Cl In this reaction, ammonia molecules (NH3) act as a base because they (1) accept hydrogen ions (H+) (2) accept hydroxide ions (OH-) (3) donate hydrogen ions (H+) (4) donate hydroxide ions (OH-)
Describe the characteristics of compounds and explain how compounds are named

A solution of methanol and water has a mole fraction of water of 0.312 and a total vapor pressure of 211 torr at 39.9 ∘C. The vapor pressures of pure methan ol and pure water at this temperature are 256 torr and 55.3 torr, respectively. ls the solution ideal? If not, what can you say about the relative strengths of the solute-solvent interactions compared to the solute-solute and solvent-solvent interactions?

Answers

Answer:

Weaker

Explanation:

The strategy here is to use Raoult´s law to calculate the theoretical vapor pressure for the concentrations given and compare it with the experimental value of 211 torr.

Raoult´s law tell us that for a binary solution

P total = partial pressure A + partial pressure B = Xa PºA + Xb PºB

where Xa and Xb are the mol fractions, and PºA and PºB are the vapor pressures of pure A and pure B, respectively

For the solution in question we have

Ptotal = 0.312 x 55.3 torr + ( 1- 0.312 ) x 256 torr ( XA + XB = 1 )

Ptotal = 193 torr

Since experimentally, the total vapor pressure is 211 and our theoretical value is smaller ( 193 torr ), we can conclude the interactions solute-solvent are weaker compared to the solute-solute and solvent-solvent interactions.

Which state of matter has a definite volume but can change its shape?A.) Solid
B.)gas
C.)liquid

Answers

Answer:

solid

Explanation:

because solid has a definite shape and volume

Answer:

Liquid

Explanation:

This is because the intermolecular forces of attraction are strong enough to hold the molecules together but not so strong as to fix them into definite positions (as in solids). Instead, they possess fluidity and hence no definite shape.

Calculate freezing temperature of.5 M sodium chloride solution. Assume that the molality of each solution is .5 Ma. -.93 Celsius
b. -1.86 Celsius
c. -3.72 Celsius
d. -.538 Celsius

Answers

Given,
Molality = .5M

We know, Kf = 1.86

Now,
Δ T = M x Kf
= 1.86 * 0.5
= 0.93 °C

Now,
Freezing point = Initial freezing point - Δ T
= 0°C - 0.93°C
= -0.93°C
So, the answer is A

Write M if the unit is that of a mass, V if the unit is that of a volume,and D if the unit is that of a density.

Answers

Answer:

6) V 7) M 8) V 9) D 10) D 11) M 12) D 13) V

Explanation:

Volume- cm^3, ml, etc.

Mass- g/cm^3, g/ml, etc.

Density- g, kg, etc.

Which statement correctly describes the phosphate ion, PO 3/4

Answers

A phosphate is an inorganic chemical and a salt of phosphoric acid. A phosphate or organophosphate is an ester of phosphoric acid and is presented by the symbol PO3^-4. The phosphate ion is a polyatomic particle with the experimental equation PO3−4 and a molar mass of 94.97 g/mol. It comprises of one focal phosphorus iota encompassed by four oxygen iotas in a tetrahedral course of action.

Which of the following is a balanced equation for cellular respiration? A.C6H12O6 + 6O2 6CO2 + 6H2O
B.CO2 + H2O C6H12O6 + O2
C.6CO2 + 6H2O C6H12O6 + 6O2
D.6C6H12O6 + 6O2 6CO2 + H2O
E.C6H12O6 + O2 CO2 + H2O
F.6CO2 + 6H2O C6H12O6 + 6O2

Answers

I did all of the work, and F is the answer I ended up with

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