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
miskamm [114]
2 years ago
8

What factors causes zinc to decrease and increase? Not the zinc in the human body.

Chemistry
1 answer:
LUCKY_DIMON [66]2 years ago
5 0

Zinc deficiency affects the skin and gastrointestinal tract; brain and central nervous system, immune, skeletal, and reproductive systems. Zinc deficiency in humans is caused by reduced dietary intake, inadequate absorption, increased loss, or increased body system use. The most common cause is reduced dietary intake.

You might be interested in
Classify each of these soluble solutes as a strong electrolyte, a weak electrolyte, or a nonelectrolyte. Solutes formula hydroch
matrenka [14]

Compounds which on dissolving in water gets completely dissociates into its ions are known as strong electrolytes whereas compounds which on dissolving in water gets partially dissociates into its ions are known as weak electrolytes.


Substances which gives solution on dissolving in water and do not dissociates into ions also does not conduct electric current are known as nonelectrolyte.

  • Hydrochloric acid, HCl

On adding HCl (strong acid) in water, it will completely dissociates into ions (H^{+} and Cl^{-}) and thus, it is a strong electrolyte.

  • Sodium hydroxide, NaOH

On adding NaOH (strong base) in water, it will completely dissociates into ions (Na^{+} and  OH^{-}) and thus, it is a strong electrolyte.

  • Formic acid, HCOOH

On adding HCOOH (weak acid) in water, it will partially dissociates into ions (H^{+} and  HCOO^{-}) and thus, it is a weak electrolyte.

  • Methyl amine, CH_3NH_2

On adding CH_3NH_2 (weak base) in water, it will partially dissociates into ions (CH_3NH_3^{+} and  OH^{-}) and thus, it is a weak electrolyte.

  • Potassium chloride, KCl

On adding KCl in water, it will completely dissociates into ions (K^{+} and  Cl^{-}) and thus, it is a strong electrolyte.

  • Ethanol, C_2H_5OH

On adding C_2H_5OH in water, it will not dissociates into ions  and thus, it is a nonelectrolyte.

  • Sucrose, C_{12}H_{22}O_{11}

On adding C_{12}H_{22}O_{11} in water, it will not dissociates into ions  and thus, it is a nonelectrolyte.

3 0
3 years ago
The Element rhenium has two naturally occurring isotopes, 185 Re and 187 Re, with an average atomic mass of 186.207 amu. Rhenium
BigorU [14]
To calculate the average mass of the element, we take the summation of the product of the isotope and the percent abundance. In this case, the equation becomes 186.207=187*0.626+185*x where x is the percent abundance of 185. The answer is 0.374 or 37.4%. This can also be obtained by 100%-62.6%= 37.4%. 
8 0
2 years ago
? Answer the question below. Type your response in the space provided. What volume of a 2.5 M stock solution of acetic acid (HC2
Novay_Z [31]
Data: 
M_{concentrated} = 2.5\:mol
V_{concentrated} = ?
M_{dilute} = 0.50\:mol
V_{dilute} = 100\:mL\to0.100\:L
<span>
Formula: Dilution Calculations

</span>M_{concentrated} * V_{concentrated} = M_{dilute} * V_{dilute}
<span>
Solving:

</span>
M_{concentrated} * V_{concentrated} = M_{dilute} * V_{dilute}
2.5 * V_{concentrated} = 0.50 * 0.100
2.5V_{concentrated} = 0.05
V_{concentrated} =  \frac{0.05}{2.5}
\boxed{\boxed{V_{concentrated} = 0.02\:L\:or\:20\:mL}} \end{array}}\qquad\quad\checkmark<span>







</span>
3 0
3 years ago
What is a natural resource that is plentiful, but strong enough to be used as currency?
gayaneshka [121]

Answer:

The two characteristics — “plentiful” and “currency” — are not really related.

Money is a symbolic tool to expedite trade. In earliest days, people might carry bushels of wheat to exchange for jars of oil. But that is cumbersome, and the search costs are too high. It’s hard to find another party who both wants what you have, AND who also has what you want!.

Instead, we all agree on trading with “money.” The farmer gives the store milk and gets money. Later you give the store money and get milk.

SO… The most important characteristic of currency is that it is hard to fake. That is to prevent cheating. Gold and silver were scarce so made good coins. Then printed currency was made hard to counterfeit. Trade with money is based on confidence in the money.

In an entirely different direction are the natural resources we take for granted - like air and water.

If you explain your question further in the comments, glad to respond.

Explanation:

Nature.

Real value equals nature which sustains all life.

This is indisputable & real value, nature & life are inseparable.

Nature is a singular compound billions years old recreative self-sustainable real value system of living organisms. Humans are a mere millions years old failing species of mammal.

Nature must and will inevitably be repaired, restored and expanded as the only source of REAL life sustaining value on the planet.

Value inequality concerns natures real life sustaining value and over billions of years through evolution nature has acheived some degree of balance. This has been disrupted by the human species using the failed fake value system of economics to create fake income inequality

Real value is not *emotional* or *symbolic* (wealth) and for mammals like we humans consists of life sustaining matter created solely by nature.

Fake “value“ or wealth is created by failed economics which creates fake income inequality that is used to manipulate the masses access to real value. Fake value is “shadow wealth” used by capitalists to control and manipulate access to natures real value.

Wealth is a fake value lien placed by the wealthy (capitalists) on natures real life sustaining value and is facilitated by economics and capitalism in particular.

5 0
2 years ago
Why chemically did the prescribing of thalidomide for morning sickness in pregnant women lead to tragic consequences, including
Dominik [7]

Answer:

See explanation

Explanation:

The drug thalidomide with molecular formula C13H10N2O4 was widely prescribed by doctors for morning sickness in pregnant women in the 1960s.

The drug was sold as a racemic mixture  (+)(R)-thalidomide and (-)(S)-thalidomide.

Unfortunately, only the  (+)(R)-thalidomide exhibited the required effect while (-)(S)-thalidomide is a teratogen.

This goes a long way to underscore the importance of separation of enantiomers in drug production.

Therefore, all the teratogenic effects observed when using the drug thalidomide was actually as a result of the presence of (-)(S)-thalidomide, the unwanted enantiomer.

3 0
3 years ago
Other questions:
  • The successive ionization energies of a certain element are I1 = 589.5 kJ/mol, I2 =1145 kJ/mol, I3= 4900 kJ/mol, I4 = 6500 kJ/mo
    8·2 answers
  • How many moles of Ag can be produced if 350. g of Cu are reacted with excess AgNO3 according to the equation Cu(s) + 2AgNO3(aq)
    7·2 answers
  • Which is the best acid to use in the preparation of a buffer with ph = 3.3?
    8·1 answer
  • A cylinder is filled with 10.0L of gas and a piston is put into it. The initial pressure of the gas is measured to be 96.0kPa. T
    7·1 answer
  • A very flammable substance would not be used in children’s clothing. Please select the best answer from the choices provided T F
    12·1 answer
  • URGENT! PLEASE HELP ASAP
    14·1 answer
  • What do you mean by environment conservation?​
    15·1 answer
  • Explain what is wrong with the following structure.
    14·2 answers
  • Which two factors are used to calculate the kinetic energy of an object?
    5·2 answers
  • What are the words for each blank spot?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!