Solid calcium hydroxide is dissolved in water until the pH of the solution is 11.44. The hydroxide ion concentration [OH–] of the solution is:______.A. 1.1 * 10-11 M.B. 3.06 M.C. 8.7 * 10-4 M.D. 1.0 * 10-14 M.E. None of these.

Answers

Answer 1

Answer:

c the answer is c that is the answer


Related Questions

which of these is a rough approximation of the cogito?

Answers

Given the Latin meaning of the cogito, we can confirm that it is roughly translated and summarized by the phrase "I think, therefore I am".

Cogito, ergo sum or "The Cogito" is an extremely popular, well-known philosophical phrase credited to Rene Descartes. This Latin phrase is roughly translated as "I think, therefore I am", which appeared originally in "The Principles of Philosophy", and was later translated to a variety of languages in an attempt to reach a wider public, most notably into Latin.

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For the reaction whose balanced equation is as follows, find how many grams of
zinc phosphate will be produced by the reaction of 5.00 grams of ammonium
phosphate.
3 ZnCla + 2 (NH4)3PO4 → Zn3(PO4)2 + 6 NHACI

Answers

Answer:

oxygen

Explanation:

cause thats what we need

The positvie part of the atom found in the center of the atom

Answers

That would be protons ! They are positive

Could someone take a picture of an acid or a base and label them

Answers

Answer:

Ok

Explanation:

Write the symbol for the atom with 38 protons, 36 electrons, and 50 neutrons and identify the element.

Answers

Answer:

Symbol: Sr2+

Element: Strontium

Explanation:

Strontium will have 38 protons, 38 electrons, and the neutron will depend on the isotope but there will usually be 48, 49, or 50 neutrons

Hope this Helps

Is it possible to move the atoms close enough that the nuclei come in contact?

Answers

Answer:

I believe not.

Explanation:

From what I have been told atoms can never come into contact beyond the electron barrier.

How many atoms of nitrogen are in 1.5 moles of aspartame?

Answers

Answer:

459.11 g.

Explanation:

hope this helps

How is heat transferred when a person holds a pen that is already at body
temperature?
A. From the hand to the pen
B. Heat is not transferred.
C. In both directions between the pen and the hand
D. From the pen to the hand
SUBMIT

Answers

Answer:

The answer is B.

Explanation:

Heat is not transferred.

How many dozens of silver atoms are in the piece of jewelry?.

Answers

the piece of jewelry contains 5.08x10 21to the power dozen Ag atoms.

which atoms typically form stable structures that are an exception to the octet rule

Answers

Mother answers are Neon and Argon

If the energy of the reactants is less than
the energy of the products, what kind of reaction is it.

Answers

The opposite type of reaction (where energy is taken in from the surroundings of a reaction and thus the energy of the reactants is lower than that of the products) is called an endothermic reaction

why is transfer of the heat by the actual movement of the warmed matter

Answers

Answer:

The warmer the water gets the particles begin to expand and starts vibrating

how can teh human body looose heat? (conduction, convecion, radiation) and WHY

Answers

Answer:

Radiation and conduction

Explanation:

The human body lose heat by these two ways, because everything that touches our bodies and is in a temperature below us will receive part of our heat (conduction), and you can figure out that we lose heat by radiation because a human bright in a heat cam

Help please, take a screenshot who will answer will be brainiest.

Answers

Answer:

1:

•a typical metal tends to have a higher melting and boiling point than a typical non metal which has a low melting and boiling point

•a typical metal tends to have a shiny appearance than a typical non metal which has a dull apearance

•and finally, a typical metal is a good conductor of electricity and heat while a typical non metal isn't

2:

elements E and C

3:

a, it doesn't conduct electricity

b, it's a good conductor of heat/ has a high melting point/ has a high boiling point (you can choose either that sits right with you)

Why cathode rays have reducing effect

Answers

Answer:

Cathode rays consist mainly of electrons, they ionize substance, this leads to reduction. Any ions produced are collect by an ion trap in the tube therefore anything the beam of electrons hits is going to gain electrons.

How many grams of zinc chloride could be formed from the reaction of 3. 57g zinc with excess hcl?.

Answers

Zn+2HCl = ZnCl2 + H2
Zn= ZnCl2
65.38g Zn= 136.315 g ZnCl2
1g Zn = 136.315/65.38 g ZnCl2
3.57 g Zn = (136.315/ 65.38) × 3.57 g of ZnCl2
3.57g Zn = 7.443g ZnCl2

Can someone help me with this chemistry question?

Answers

Answer: b


Explanation; the ice has less thermal energy and the water has more thermal energy so the water transfers some of its thermal energy to the ice melting it and eventually making cold water.

7.
Wh
6
Which Lewis electron-dot diagram is correct for
CO2?
2-m
A :0
B.
:0:0:0
0:0
:
©:
::::C::0
D. 0
:0:0:
XX

Answers

Answer:

O=c=o

Explanation:

co2is nonpolar and it has linear molecular shape

explain the factors that affect the separation of mixtures in amino acids

Answers

Consider you have a mixture of amino acids(contains all set of amino acids such as polar, non polar). Other than TLC, how are you supposed to separate a single amino acid from the mixture without loss of amino acid quantitatively.

Draw the structure of the product that is formed when the compound shown below undergoes a reaction with 1 equivalent of ch3mgi and then is treated with water.

Answers

When the compound shown is treated CH3MgI followed by water, 1,3 - cyclohexadienol is formed.

Grignard reagent is an alkylmagnesium halide. Grignard reagents are important synthetic tools in chemistry. They are used to synthesize and number of compounds in the laboratory.

When the Grignard reagent, CH3MgI is reacted with compound shown followed by treatment with water, the product of the reaction is 1,3 - cyclohexadienol whose structure is shown in the second image attached to this answer.

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help for brainlist

More than 7,000 islands in the Philippines lack access to electricity, so after the sun goes down, light usually comes through kerosene lamps. While cheap, these fire hazards are bad for the environment and human health.
You are an entrepreneur and would like to suggest to the government of the Philippines a better solution to this problem. But to come up with the solution to this problem, you must first understand the nature of chemical bonding and factors that control the structure of compounds. You will study and understand natural materials behavior to build a very cheap and environmentally friendly lamp.

What material do you think can be a cheaper and better alternative to kerosene?



Question 2 options:

There is no better alternative to kerosene.


A material that contains ions, so it can conduct electricity.


A material that contains gas, as gases can conduct electricity.


A material having covalent boding.

Answers

Answer:

Question 1: What material do you think can be a cheaper and better alternative to kerosene?

Answer: Generic lamp oil can be used to replace kerosene in lamps. The cheaper lamp oil burns cleaner and has less odor than the more expensive kerosene.

Question 2:

Correct answer is the last option

Hope this helps!

What is the mass of oxygen atoms in 0. 380 mol fe(co)5?.

Answers

Answer:39+30

Explanation:

what is the maximum concentration of salt in water for an ecosystem to be classified as a freshwater system?

Answers

Answer:

The saline water should be from 1000 ppm to 3000 ppm while fresh water is less than 1000 ppm

A fusion reaction always creates which of the following?

a A massive amount of energy.
b A massive amount of heat.
C A more massive atomic nucleus.
d A massive number of smaller nuclei.

Answers

A fusion reaction can be regarded as the type of reaction that occurs where two lighter elements come together in a type of reaction giving rise to a heavier/more massive element.

A fusion reaction always creates a more massive atomic nucleus (option c).

When the two lighter nuclei comes together in a reaction, a more heavier/massive nucleus is formed but its mass will still be less than the combined mass of the two reactant nuclei.

This also indicates that the left over mass may have been released as energy.

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What mass of water absorbs 6700 J of heat to raise the temperature from 283K to 318K?​

Answers

Answer:

you did not give the specific heat like formula like it takes 1kj to raise 28grams of water by 10 grams

How many atoms of each element are in NaCI?


Enter your answer in the boxes:

|___| sodium

|___| chlorine

Answers

Answer:

well first you need 1 s then you need 1 ch

Explanation:

A 250. mL sample of oxygen is collected over water at 25 °C and 760.0 torr pressure. What is the partial pressure
of the oxygen? (Vapor pressure of water at 25°C is 23.8 mm Hg)

Answers

Answer:The mass of oxygen gas sample collected over water is 0.544 g.

The given parameters;

temperature of the oxygen gas, t = 25 °C

total pressure of the gas, P = 644 torr

volume of the gas, V = 500 mL

vapor pressure = 23.8 torr

molar mass of oxygen gas = 32 g/mol

The number of moles of the gas collected is calculated by using ideal gas equation as follows;

PV = nRT

where;

R is the ideal gas constant = 62.36 L.torr/mol.K

P is the pressure of the gas = 644 torr - 23.8 torr = 620.2 torr

T is the temperature of the gas = 25 + 273 = 298 K

V is the volume of the gas = 500 mL = 0.5 L

The number of moles of the  gas is calculated as follows;

The mass of oxygen gas collected is calculated as follows;

m = 0.017 (32 g/mol)

m = 0.544 g

Thus, the mass of oxygen gas sample collected over water is 0.544 g.

Explanation:

The partial pressure of oxygen is; 760.0 torr - 23.8  torr = 736.2 torr.

What is partial pressure?

We know that in a mixture of gases, the pressure that is exerted by each gas is called the partial pressure of the mixture.

In this case, we have the total pressure of the mixture as 760.0 torr and the vapor pressure of water as 23.8 mm Hg or 23.8  torr) at that temperature. Hence, the partial pressure of oxygen is; 760.0 torr - 23.8  torr = 736.2 torr.

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#SPJ2

2. What mass of water absorbs 6700 J of heat to raise the temperature from 283K to 318K?​

Answers

Answer:

Q = mcT ...you can either substitute the molar heat capacity of water in the place of c or the specific heat capacity of water.

Explanation:

the atomic number of RE is 75. the atomic mass of one of its isotopes is 186. how many neutrons are in an atom of this isotopes

Answers

Answer:

111

Explanation:

Answer:

I believe Rhenium has 111 neutrons in the atoms isotopes.

Explanation:

Name the method that used to separate the components of petroleum oil.

Answers

Answer:

fractional distillation

Explanation:

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