Does anyone know this one?

Answer: 0.759 L

Explanation:

molarity = moles of solute / liters of solution

so, 6.750 = 5.120 / liters of solution

liters of solution = 5.120/6.750 = 0.759 L

Answer:

________________________________

which doctor has the least thermal energy?

A. beaker D

B. beaker A

C.beaker B.

D. beaker C

________________________________

A. beaker D..

________________________________

#LetsEarthBreath

The first reaction is exothermic reaction because it release energy whereas the seocond equation is endothermic reaction due to absorption of energy.

The energy is absorbed from the surrounding environment in susch type of reaction. Energy is absorbed in the form of heat.

The energy is released from the reaction to its environment in this type of reaction. Energy is released as heat, electricity, light or sound.

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Answer: Dissolve approximately 3 mg of Sodium Chloride in 2 mL of water.

Add 0.4 mL of silver nitrate TS and acidify with diluted nitric acid.

Answer:

The available amounts of each reactant

Explanation:

The limiting reactant is the reactant that will limit the equation.

For example, I have 2N2 and H2O. In this situation, H2O would be the limiting reactant since there is only one atom, while N2 has two atoms.

Think of it like you're making peanut butter and jelly. You have 50 cans of peanut butter and only 10 jelly. Which means you can only make sandwiches using 10 jars of jelly and 10 jars of peanut butter.

The balanced equation which have the coefficient 3 in front of any of the reactants is 3H₂SO₄ + 2B(OH)₃ → B₂(SO₄)₃ + 3H₂O.

Those chemical equations in which number of each atoms pesent in reactant side as well as on product side is always equal to each other.

Let us consider the balanced equations for the given chemical reactions are:

Balanced form of the above reaction will be written as Zn+2HCl → ZnCl₂+H₂ where all atoms are present in equal quantity.

Balanced form of the given reaction will be written as 3H₂SO₄ + 2B(OH)₃ → B₂(SO₄)₃ + 3H₂O, where coefficient 3 is present in before sulphuric acid and water molecule.

Balanced form of above reation will be written as Fe+ 2AgNO₃ → Fe(NO₃)₂ + 2Ag.

Balnced form of above chemical equation will be represented as C₂H₄O₂ + 2O₂ → 2CO₂ + 2H₂O, and coefficient 3 is not used any where.

The quation which have the coefficient 3 is 3H₂SO₄ + 2B(OH)₃ → B₂(SO₄)₃ + 3H₂O.

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Answer: It's 3. H2SO4 + B(OH)3  B2(SO4)3 + H2O

Answer:

(True) The answer to that is yes, global warming is a hotly debated topic.

Explanation:

As a matter of political controversy, global warming is often viewed from different political perspectives. Which is why it is still an issue. (In 1988, global warming became a topic of discussion.) A number of climate change-related phenomena are occurring due to climate change, including rising temperatures, droughts and wildfires, changing precipitation patterns, glaciers melting, and rising sea levels.

Hope this helps! :D

gIAnswer: It b

Explanation:

Answer:

 single replacement

Explanation:

Single replacement is when the molecules switch with each another

for example:

Zn + CuCl₂→ZnCl₂ +Cu

Answer:

replacement

Explanation:

Answer:

12 H, 18 O, 6 C

Explanation:

[tex]6H_{2} O + 6CO_{2} -- > C_{6}H_{12} + 6O_{2}\\[/tex]

___________________

first, we'll fo the h on the first equation: [tex]6H_{2}[/tex]

multiply the 6 and 2 to get twelve.

in the second equation, we see that there is [tex]H_{12}[/tex]

so, in both there are 12 H.

__________________

Now we'll do O.

in the first equation we have [tex]6O + 6O_{2}[/tex]

so we have 6 + (6*2) or 6 + 12, which gives us 18

in the second equation we have [tex]O_{6} + 6O_{2}[/tex]

it's basically the same thing, just written differently, so we have 18.

__________________

Finally, C.

In the first equation, we have [tex]6C[/tex]

in the second [tex]C_{6}[/tex], again, same thing expressed differently.

both have 6 C.

Answer: Tetonic plates

Explanation: just because

Answer:

I think it would be Contagious.

Explanation:

You get it from another person or from food and thats contagious.

Answer:

groups

Explanation:

In chemistry, the vertical columns are known as groups and the horizontal columns are known as periods.

Answer:

it's bright where you can see it it's not that bright compared to the sun from Earth it's really not so bright

The economic challenges that government must face are unemployment, low production, and inflation.

Economic challenges are problems related to the production of goods and services to satisfy unlimited wants.

Thus, the correct options are 2. Unemployment.

3. low production.

4. inflation.

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Answer:

B,C,D

Explanation:

took the test

Since the reaction shown in the question is an acid - base reaction in the Lewis sense; the Lewis acid here is AlCl3  while the Lewis base here is Cl^- .

A Lewis acid is a substance that accepts electron pair while a Lewis base donates an electron pair.

Now consider the given reaction; AlCl3 +Cl^- ------> AlCl 4 ^-. The Lewis acid here is AlCl3  while the Lewis base here is Cl^- .

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The type of substance which reacts with limestone and produces carbon dioxide gas is an acid.

Limestone is a basic compound with a molecular formula CaCO₃ and it reacts with acid to produce carbon dioxide gas.

Reaction between the limestone and an acid known as hydrochloric acid to produce carbon dioxide gas, water molecule and calcium chloride salt as:

CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O

Hence required substance is an acid.

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Answer:

c on edge

<3 hope this helps people.

For the pH of a solution prepared by dissolving 0. 350 mol of solid methylamine hydrochloride, the pH is mathematically given as

pH = 11.14

Generally, the equation for the pKb  is mathematically given as

pKb = -logKb

Therefore

pKb of CH3NH2 = -log(4.40×10-4)

pKb of CH3NH2= 3.36

Hence

pKa= 14 - pKb

pKa= 14 - 3.36

pKa= 10.64

In conclusion, using

pH = pKa + log([A-]/[HA])

pH = 10.64 + log(1.10M/0.350M)

pH = 11.14

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Answer:

neutralization

Explanation:

The number of moles of oxygen required to generate 28 moles of water from the reaction is 14 moles

2H₂ + O₂ —> 2H₂O

From the balanced equation above,

2 moles of water were obtained from 1 mole of oxygen

From the balanced equation above,

2 moles of water were obtained from 1 mole of oxygen

Therefore,

28 moles of water will be obtained from = 28 / 2 = 14 moles of oxygen

Thus, 14 moles of oxygen are needed for the reaction

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The mass of the precipitate, BaSO₄ obtained from the given reaction is 18.64 grams

Mole = Molarity x Volume

Mole of Na₂SO₄ = 0.3 × 0.3

Mole of Na₂SO₄ = 0.09 mole

Mole = Molarity x Volume

Mole of BaCl₂ = 0.4 × 0.2

Mole of BaCl₂ = 0.08 mole

Balanced equation

Na₂SO₄(aq) + BaCl₂(aq) —> BaSO₄(s) + 2NaCl(aq)

From the balanced equation above,

1 mole of BaCl₂ reacted with 1 mole of Na₂SO₄.

Therefore,

0.08 mole of BaCl₂ will also react with 0.08 mole of Na₂SO₄.

From the above illustration, we can see that only 0.08 mole of Na₂SO₄ out of 0.09 mole given is neede to react completely with 0.08 mole of BaCl₂.

Therefore, BaCl₂ is the limiting reactant

Balanced equation

Na₂SO₄(aq) + BaCl₂(aq) —> BaSO₄(s) + 2NaCl(aq)

From the balanced equation above,

1 mole of BaCl₂ reacted to produce 1 mole of BaSO₄.

Therefore,

0.08 mole of BaCl₂ will also react to produce 0.08 mole of BaSO₄.

The mass of BaSO₄ can be obtained as follow

Mass = mole × molar mass

Mass of BaSO₄ = 0.08 × 233

Mass of BaSO₄ = 18.64 g

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Answer:

Surveys

Explanation:

Martin can make an interaction with people and take surveys to know whether people likes the new flavors.

Surveys are research techniques used to gather data from a designated group of respondents in order to learn more and acquire insights into a range of interesting topics. Depending on the methodology chosen and the objective of the study, they can be conducted in a variety of methods and serve a variety of objectives.

Direct questions to clients are the best approach to get information from them. Surveys are a good way to achieve it if you have a well-thought-out strategy.

Companies can use surveys to gather data to develop strategies and maintain the satisfaction of their employees and consumers while looking for solutions based on the results.

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#SPJ2

Answer:

B. false

Explanation:

Answer:

B (false)

Explanation:

Because, the earliest recorded evidence of wind energy being used dates to around 5000 BC in Egypt, where the sail was invented to catch the wind and propel boats along the River Nile

Answer:

False ....

first of all gas is not the desirable product of combustion

Explanation:

the equation is wrong, please make sure you typed it correctly. because there is no way methane and carbon dioxide can give carbon tetra chloride and hydrogen chloride gas. It's impossible, the reactants and products donot match. Re-write the equation correctly again