2. You have 200g or a solution that contains 30g of hydrochloric acid (HCI),
what percentage of your solution is made up of HCI acid?​

Answer:

15.438g H2O

Explanation:

First you need to find the reaction equation:

2H2O+2Na=2NaOH + H2

Hydrogen is a diatomic molecule so it will have a subscript of 2 on the right hand side. From there we can balance the reaction.    

Then we can use stoichiometry:

34.2g NaOH * (1 mol NaOH/39.908g NaOH) * (2 mol H2O/2 mol NaOH) * (18.015g H2O/1 mol H20) = 15.438g H2O

It is important that when you use stoichiometry that all your units cancel out until you only have the unit you want.

Answer:

If m or n is zero, the reaction is zero order in A or B, respectively, and the rate of the reaction is not affected by the concentration of that reactant. The overall reaction order is the sum of the orders with respect to each reactant. If m = 1 and n = 1, the overall order of the reaction is second order

(m + n = 1 + 1 = 2).

Explanation:

Answer:

Sulfur (but not argon or sodium.)

Explanation:

In an ionic bond, one atom would completely lose one or more electrons while the other atom would completely gain those electrons.

For that to happen, the first atom needs a strong tendency of losing electrons. The second atom needs a strong tendency of gaining electrons.

Atoms of metals tend to lose electrons. On the other hand, atoms of nonmetals tend to gain electrons.

Alkaline earth metals (IUPAC group [tex]2[/tex]) include elements such as magnesium and calcium. Like many other metals, alkaline earth metal atoms tend to lose electrons. Atoms of elements that form ionic bonds with alkaline earth metal atoms should tend to accept electrons.

Among the choices for the other element in this ionic bond:

Because sodium is a metal, it is unlikely that sodium would accept electrons from alkaline earth metal elements. Rather, sodium might form an alloy (with metallic bonds rather than ionic bonds) when melted and mixed with alkaline earth metals.

Sulfur is a non-metal and is right under oxygen in group [tex]6[/tex] of the periodic table. Like atoms of other nonmetals in that group, sulfur atoms tend to gain electrons and could readily form ionic bonds when mixed with alkaline earth metal elements.

Argon is a noble gas. Noble gas elements are considerably chemically inert. They seldom react with other elements. Even if they do so, they tend to form covalent bonds rather than ionic bonds. In practice, alkaline earth metals such as calcium may even be stored in containers filled with argon to prevent the metal from reacting with oxygen in the air.

Answer:

153 N left

Hope this helps

Explanation:

Answer:

a) 30

b) 45

Explanation:

Answer:

1

Explanation:

is a factor in global warming

Answer:

sulfur dioxide from coal fired plants in Tennessee

Explanation:

Got it right on the quiz :)

Answer:

3.01

Explanation:

Speed=distance/time

=100mtrs/33.2sec

=3.01m/s

Type of reaction : The decomposition reaction

Given

Reaction

Al₂(CO₃)₃ → Al₂O₃ + 3CO₂

Required

Type of reaction

Solution

The decomposition reaction in a chemical reaction shows the decomposition reaction of a compound into its constituent elements or compounds

So 1 compound breaks down into 2 or more compounds

The general formula :

AB ⇒ A + B

Answer:

A. is the correct choice.

Explanation:

If there are 70.00 g of Oxygen then it would be molecules, in which there is only 1 option with molecules.

I am NOT professional. There is a chance I am wrong. Please reply to me if I made a mistake.

Answer:

Explanation:How many atoms are in 70.00 grams of oxygen.

of or containing water, typically as a solvent or medium.

"an aqueous solution of potassium permanganate"

like water; watery.

"a great hall of aqueous marble"

Answer:

For every 5 psu increase in salinity, the freezing point decreases by 0.28 degrees Celsius (0.5 degrees Fahrenheit); thus, in polar regions with an ocean salinity of about 32 psu, the water begins to freeze at -1.8 degrees Celsius (28.8 degrees Fahrenheit).

Explanation:

Freezing increases salinity, while melting decreases salinity.

took the test lol

Explanation:

neon has 8valence electrons

chroline has 7 valence electrons

nitrogen has 5 valence electrons

oxygen has 6 valence electrons

so neon has the most valence elctrons

The company should contact with a material scientist to better know which materials can provide the needs that they demand. Hence option c is correct.

The chemical composition and structure of many man-made and natural materials are investigated and analyzed by materials scientists. In order to learn more or acquire new information, glass, rubber, ceramic, alloys, polymers, and metals are all explored and investigated.

Using what they have learnt, materials scientists then come up with methods to mix materials, reinforce existing materials, or develop whole new materials with specific features and characteristics for usage in a variety of applications and products.

A materials scientist develops techniques for evaluating certain materials to find out how they react to various environmental factors. They also design laboratory tests to assess the plausibility of methods and processes used to produce novel materials with enhanced properties.

Therefore, the company have to contact a material scientist.

Find more on material science:

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Explanation:

A way to maintain good health is from exercise, eating healthy foods, getting enough rest, keeping .The first mention of the phrase 'you are what you eat' came from the 1826 work Physiologie du Gout, ou Medetations de Gastronomie Transcendante, in which French author Anthelme Brillat-Savarin wrote: “Tell me what you eat and I will tell you what your are.”

Answer:

0.055

Explanation:

Not 100% sure this is right but this is how I got it:

1 mol * 2.44 grams/44.0095 g/mol (44.0095 is one mole of CO2)

Answer:

what are the following?

Answer:

two

Explanation:

The number of significant figures needed in the answer is 2.

This is because when finding the products of two numbers, the result is as accurate as the least number of significant figures of the numbers being multiplied.

Here the numbers being multiplied are;

 1.31m

 6.5m

        1.31m has 3 significant figures

          6.5m has 2 significant figures.

So, the product will have 2 significant figures

Answer:

A Geminids

Explanation:

Answer:

The answer would be A

Explanation:

If more solvent is added, the solution becomes unsaturated because in principle it is capable of dissolving more solute.

Answer:

J

Explanation:

its J

Answer:

https://quizlet.com/259730102/chemistry-unit-10-flash-cards/

Explanation:

Answer:

4

Explanation:

Nitrogen (N)

hydrogen (H)

sulfur (S)

oxygen (O)

Explanation:

weight= mass* 9.8N

100 kg mass weighs about 980 Newtons on Earth.

Explanation:

it is too small to be a planet as the avrage planet size

can be around 20,000 the smallest planet in the solar system mercurey has more than pluto

Answer:

A. Comet

Explanation:

Comet is a object which has a tail  when it passes near the Sun.

A comet is an icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing. This produces an extended, gravitationally unbound atmosphere or coma surrounding the nucleus, and sometimes a tail of gas and dust gas blown out from the coma.

These phenomena are due to the effects of solar radiation and the outstreaming solar wind plasma acting upon the nucleus of the comet. Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times Earth's diameter, while the tail may stretch beyond one astronomical unit.

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According to the mole concept, the mass  of 1.25 moles Ca(OH)₂ is 92.61 grams.

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.Mass=number of moles×molar mass=1.25×74.09=92.61 g.

Thus,the mass  of 1.25 moles Ca(OH)₂ is 92.61 grams.

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Answer:

thermal

Explanation: