pleassseeeee i’ll give brainiest!!!!!!!!

2KCIO3= 2KCI+3O2

Using the equation above, if 25.6 g of KClare produced, then how many grams of
KCIO3 were consumed? (Type the numerical answer only, no words or label. Use
correct significant figures)

Answers

Answer 1

Answer:

The key to chemistry is to change everything to moles. Then when you have the answer in moles change the answer back to grams, liters, or whatever you want.

change 25 grams of potassium chlorate to moles.

calculate the gram molecular mass of potassium chlorate.

Chlorate is Cl with 3 oxygens. ate = saturated. Chlorine has seven valance electrons when it is saturated six of these electrons are used by oxygen ( 2 electrons per oxygen) leaving only 1 electron.

1 K x 39 grams/mole

+1 Cl x 35.4 grams/ mole

+3 O x 16 grams/ mole

= 122.4 grams / mole Potassium Chlorate

25

122.4

= moles.

2.05 moles of Potassium Chlorate.

There is a 1:1 mole ratio. 1 mole of Potassium Chlorate will produce 1 mole of Potassium Chloride.

2.05 moles of Potassium Chlorate will produce 2.05 moles of Potassium Chloride.

Find the gram molecular mass of Potassium Chloride.

1 K x 39 = 39

+1 Cl x 35.4 = 35.4

= 74.4 grams / mole.

2.05 moles x 74.4 grams/ mole = 15.2 grams

Explanation:

hope this helped :)


Related Questions

How many moles of hypomanganous acid, H3MnO4, are contained in 22.912 g?

Answers

Answer:

0.188mol

Explanation:

Using the formula as follows:

mole = mass/molar mass

Molar mass of hypomanganous acid, H3MnO4 = 1(3) + 55 + 16(4)

= 3 + 55 + 64

= 122g/mol

Mass of H3MnO4 is given as 22.912 g

Hence;

moles = 22.912 ÷ 122

number of moles = 0.188mol

En un tanque se halla CO₂ a 285K ocupando un volumen de 8 L. En esas condiciones determinamos el volumen que ocupa a 393K, considerando que la presión se mantiene constante

Answers

Answer:

11.0 L

Explanation:

Podemos resolver este problema usando la ley de Charles, que afirma que a presión constante:

T₁V₂=T₂V₁

Donde el subíndice 1 indica las condiciones iniciales y el 2 las finales. En este caso:

T₁ = 285 KV₂ = ?T₂ = 393 KV₁ = 8 L

Introducimos los datos:

285 K * V₂ = 393 K * 8 L

Y calculamos V₂:

V₂ = 11.0 L

Which of the following
are
products of photosynthesis?
1 water
2 carbon dioxide
3 glucose
4 oxygen gas
Multiple choice

Answers

Answer:

4. oxygen gas

Explanation:

when a plant goes through photosynthesis, it takes in Carbon Dioxide and releases Oxygen

A 187.4g sample of C3H5(NO3)3 decomposes to produce carbon dioxide, water, diatomic oxygen, and diatomic nitrogen.

1) Write the balanced chemical equation for the decomposition reaction.
2) How many grams of carbon dioxide are produced?
3) How many grams of water are produced?
4) How many grams of diatomic oxygen are produced?
5) How many grams of diatomic nitrogen are produced?
6) The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. Verify the law of conservation of mass for the decomposition of the 187.4 g of C3H5(NO3)3 .

Answers

Answer:

Answer:

Kc = 0.20        

Explanation:

                 N₂O₄     ⇄    2NO₂

moles       5.3mol          2.3mol

Vol               5L                5L

Molarity    5.3/5M        2.3/5M

               = 1.06M     = 0.46M

Kc = [NO₂]²/[N₂O₄] =  (0.46)²/(1.06) = 0.1996 ≅ 0.20

Note:

All credit goes to  drpelezo (Ace) who created and explained the answer.

Have a nice day, and I hope this helps

-kiniwih426

(06.06 MC)
A gaseous product has a mass of 2.34 g and occupies a volume of 0.854 L. The
temperature in the laboratory is 302 K, and the air pressure is 1.04 atm. Calculate
the molar mass of the gas. (3 points)
1) 22.4 g/mol
2) 44.0 g/mol
3) 65.3 g/mol
4) 86.9 g/mol

Answers

The molar mass of the gas is 65.3 g/mol

How to determine the mole of the gas Volume (V) = 0.854 L.Temperature (T) = 302 KPressure (P) = 1.04 atmGas constant (R) = 0.0821 atm.L/Kmol Number of mole (n) =?

The number of mole of the gas can be obtained by using the ideal gas equation as illustrated below:

PV = nRT

Divide both side by RT

n = PV / RT

n = (1.04 × 0.854) / (0.0821 × 302)

n = 0.0358 mole

How to determine the molar mass Mass = 2.34 gNumber of mole = 0.0358 mole Molar mass =?

Molar mass = mass / mole

Molar mass = 2.34 / 0.0358

Molar mass of gas = 65.3 g/mol

Learn more about ideal gas equation:

https://brainly.com/question/4147359

Answer:

65.3 g/mol

Explanation:

use the ideal gas law with molar mass formula

M = mRT/PV

m= 2.34 g

V = 0.854 L

T = 302k

P = 1.04

R = 0.0821

just plug those in and solve

Select the ion. HCl H 3O +1 H 2O

Answers

Answer:

[tex]H _{3}O {}^{ + } [/tex]

Hydroxonium ion

I need D and E please I know the rest

Answers

Answer:

K2 +Br ->2KBr

K + I ->KI

actually I don't know the e option but I had tried can u pls balance it urself

Answer:

D. KOH + HBr will give KBr + H2O

E. KOH + HI will give KI + H2O

Since we know that _______________, we can conclude that the gas produced when mixing bath bombs in water could not be baking soda, citric acid, or water.

Answers

Answer:

Sodium bicarbonate.

Explanation:

The gas produced during the mixing of bath bombs in water is Sodium bicarbonate. If the reaction is with citric acid then Sodium citrate can be produced. They are weak acid with bicarbonate base. These bath bombs can be a mixture of wet and dry substances and any shape can be mold.

milk sours because of a chemical reaction that takes place between some of the chemicals that make up the milk. Why does a carton of milk left out on a countertop sour sooner than a carton of milk left in the refidgerator

Answers

Answer: A lower temperature slows down the reaction that causes souring, making the milk last longer in the refrigerator.

Explanation:

Milk is made up of different constituents which includes:

--> water,

--> fat,

--> proteins,

--> lactose (milk sugar) and minerals (salts).

Milk is also considered to be a heterogeneous mixture because of the presence of fat and water which are two immiscible liquid phases that are present.

Milk contains a sugar called lactose. It also contains harmless bacteria called lactobacillus, which uses lactose for energy and creates lactic acid as a by-product. It is the lactic acid which makes milk taste sour. Therefore when milk is kept at a LOWER temperature, these bacteria growths are limited but at a HIGHER temperature such as room temperature, the growth is increased. As they increase in growth, the bacteria makes use of the lactose for energy and creates lactic acid as a by-product as earlier mentioned, leading to the sour taste observed.

If 34.9g of water is measured out, how many moles is that?

Answers

Answer:

1.94 moles

Explanation:

because moles =mass/mr

=34.9/18

which gives 1.938 so we round it up to 1.94

mr of H2O is 18

hope this helps :)

1.94 moles of water in 34.9 g of water.

Number of moles:

It is defined as given mass over molar mass.

Molar mass = 18 g/mol

Number of moles  =  Given mass  /  Molar mass

Number of moles = 34.9 g / 18 g/mol

Number of  moles = 1.94 moles

Thus, 1.94 moles of water in 34.9 g of water.

Find more information about Number of moles here:

brainly.com/question/14464650

When temperature drops, (for example from 20 degrees celsius to 10 degrees celsius)

a.) energy increases

b.) particles move slower

c.) particles collide more often

d.) pressure increases

Answers

When temperature drops the particles move slower because temperature effects the motion of atoms or molecules

Na2S(aq)+Cd(NO3)2(aq) 2NaNO3(aq)+CdS(s)
Sodium sulfide is the limiting reactant. Select the substances that are found in the test tube after the reaction has ended.
A) Na2S
B) Cd(NO3)2
C) NaNO3
D) CdS

Answers

I dont but maybe its c in my opinion

N2 + 3H2 → 2NH3 How many moles of hydrogen are needed to react with 5 moles of nitrogen?​

Answers

Answer: 15 mol

Explanation:

From the equation, we know that for every mole of nitrogen consumed, 3 moles of hydrogen are consumed.

So, the answer is 5(3) = 15 mol

How many molecules are in 50 grams of water?

Answers

The Molar mass of 50g of water is (18.015 g/mol). Hope this helps
The answer would be 18.015 g/mol

What is the molarity when 25.0 g of the compound NaClO3 is placed in 85.0 mL of solution?

Answers

Answer: Molarity when 25.0 g of the compound [tex]NaClO_{3}[/tex]is placed in 85.0 mL of solution is 294.12 M.

Explanation:

Given: Mass = 25.0 g

Volume  = 85.0 mL (1 mL = 0.001 L) = 0.085 L

Molarity is the number of moles of a substance divided by volume in liter.

Hence, molarity of given solution is calculated as follows.

[tex]Molarity = \frac{mass}{Volume (in L)}[/tex]

Substitute the values into above formula as follows.

[tex]Molarity = \frac{mass}{volume (in L)}\\= \frac{25.0 g}{0.085 L}\\= 294.12 M[/tex]

Thus, we can conclude that molarity when 25.0 g of the compound [tex]NaClO_{3}[/tex]is placed in 85.0 mL of solution is 294.12 M.

I Need Help!!!

Let's say one of our bicycles tires has a volume of 30.0 Liters at 300 K. What will happen if
we double the volume?

Answers

Answer:

I think that temperature will be cut in half.

When volume increases, pressure decreases. As pressure decreases, temperature decreases. So if you double volume, pressure is halved and so will the temperature. I'm new to this, but I think that's the answer . Tell me if I'm right good luck!


b) determine the number of moles of carbon dioxide
produced.​

Answers

Explanation:

The mass of one mole of a substance, expressed in gms, is equal to the mean molecular mass of the substance. The molecular mass of CO2= 12+2x16= 44 so the mass if a mole of CO2 is approximately 44 grams.

Hope it helps!!!...

Please mark it as brainliest...

Which human organ turns the food we eat into a liquid mixture?

Large intestine
Liver
Pancreas
Stomach

Answers

Answer:

the digestive system

Explanation:

The digestive system is the stomache

it breaks down the food

makes glucine

creates energy

Stomach

Explanation:

When food enters your stomach, it mixes the foods and liquids with digestive juices.

If the half-cell containing 1.00 M Fe(NO3)2(aq) in galvanic cells Y and Z is replaced with a half-cell containing 5.00 M Fe(NO3)2(aq), what will be the effect on the cell voltage of the two galvanic cells

Answers

The details of the galvanic cells are missing so i have attached it.

Answer:

The voltage will increase in cell Y and decrease in cell Z.

Explanation:

Looking at the reaction, in half cell 3, we see that reduction takes place in galvanic cell Y while oxidation takes place in galvanic cell Z.

In galvanic cell Y, aluminum gains electrons which is reduction while in galvanic cell Z, Copper loses electrons which is oxidation.

Now, electricity involves movement of electrons and where there is a loss of electrons, it means a decrease in electricity and when there is a gain in electrons, it means there is an increase in electricity.

Now, in electricity, Voltage is directly proportional to electric power.

Thus, the higher the voltage, the higher the electric power.

Thus, in galvanic cell Y that undergoes gain in electrons, there will be an increase in voltage while in galvanic cell Z that undergoes loss of electrons, there will be a decrease in voltage.

Why chemical industry important for the nation with its examples.

Answers

The chemical industry is a very important contributor to the wealth of a country. For example it contributes over 1% to the Gross National Product (GNP) of European countries, which is over 6% of the total GNP produced by all manufacturing industries.

Explanation:

employment in the country.

economic boom n latest techonology.

less poverty.

more development.

more jobs for people.

increase in exports which will make large profits n will be utilized in the development of country.

GDP per capita will increase.

high standard of living.

If 2.18 grams of Br2 react with excess KI, how many grams of KBr are formed? Br2 + 2 K1 - 12 +2 KB

Answers

Answer:

2.18 grams of Br2 reacts to produce 3.25 grams of KBr

Explanation:

The balanced equation is

2 KI + Br2 → 2 KBr + I2

2 moles of KI and 1 mole of Br2 reacts to produce two molecules of KBr

Mass of two moles of KI = 2 * 166 grams

Mass of one mole of Br2 = 159.808 grams

Mass of two moles of KBr = 2* 119 grams

Thus,  159.808 grams of Br2 reacts to produce 2* 119 grams of KBr

2.18 grams of Br2 reacts to produce {(2* 119)/ 159.808} * 2.18 grams of KBr

2.18 grams of Br2 reacts to produce 3.25 grams of KBr

If 10.0 grams of sodium phosphate are reacted, what mass of barium nitrate is
required?

Answers

Answer: The mass of barium nitrate required is 23.91 g

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]    ......(1)

Given mass of sodium phosphate = 10.0 g

Molar mass of sodium phosphate = 163.94 g/mol

Plugging values in equation 1:

[tex]\text{Moles of sodium phosphate}=\frac{10.0g}{163.94g/mol}=0.061 mol[/tex]

The chemical equation for the reaction of sodium phosphate and barium nitrate follows:

[tex]3Ba(NO_3)_2+2Na_3PO_4\rightarrow Ba_3(PO_4)_2+6NaNO_3[/tex]

By the stoichiometry of the reaction:

If 2 moles of sodium phosphate reacts with 3 moles of barium nitrate

So, 0.061 moles of sodium phosphate will react with = [tex]\frac{3}{2}\times 0.061=0.0915mol[/tex] of barium nitrate

Molar mass of barium nitrate = 261.337 g/mol

Plugging values in equation 1:

[tex]\text{Mass of barium nitrate}=(0.0915mol\times 261.337g/mol)=23.91g[/tex]

Hence, the mass of barium nitrate required is 23.91 g

Particles diffuse

A. from low concentration to higher concentration
B. from higher concentration to lower concentration
C. at any direction​

Answers

B from higher concentration to lower concentration

[tex]\huge{ \mathrm{  \underline{ Answer} \:  \:  ✓ }}[/tex]

The Correct option is :

[tex] \large \boxed{\mathrm{B.}}[/tex]

The particles diffuse from the region of higher concentration to the region of lower concentration.

for example :

At alveoli -

during Inhalation, oxygen is in higher concentration in our lungs but in lower concentration blood capillaries, so oxygen diffuses into the blood and carbon dioxide which is in higher concentration in blood diffuses out from the blood capillaries.

_____________________________

[tex]\mathrm{ ☠ \: TeeNForeveR \:☠ }[/tex]

How many moles of Chromium(III) nitrate (Cr(NO3)3) are produced when Chromium reacts with 0.85 moles of Lead(IV) nitrate (Pb(NO3)4) to produce chromium(III) nitrate (Cr(NO3)3) and lead? 4 Cr + 3 Pb(NO3)4 → 4 Cr(NO3)3 + 3 Pb

Answers

Answer:

[tex]0.64molCr(NO_3)_3[/tex]

Explanation:

Hello there!

In this case, according to the given chemical equation, it turns out possible for us to realize there is a 4:3 mole ratio of chromium(III) nitrate to lead(IV) nitrate, and therefore, we can calculate the moles of the former by applying the shown below stoichiometry setup:

[tex]0.85molPb(NO_3)_4*\frac{3molCr(NO_3)_3}{4molPb(NO_3)_4} \\\\0.64molCr(NO_3)_3[/tex]

Regards!

Everything can dissolve in water because water is considered a universal solvent.
Liquid water is cooler than solid salt and sugar, allowing them to dissolve easily.
Salt's ions and sugar's polar bonds are both attracted to the polar water molecules.
Small solutes like salt and sugar can fit in the spaces between large water molecules.
What change would increase the amount of solid solute able to be dissolved in liquid water?

Decreasing rate of stirring
Decreasing surface area
Increasing pressure
Increasing temperature

Answers

Answer:

Increasing the temperature

Explanation:

The rate of solubility depends on a few factors. By increasing the temperature, the kinetic energy of the particles increase, leading to a higher rate of diffusion, dissolving the solid solute quicker.

is how much a material opposes electric current.
*
insulator
conductor
resistance
short circuit

Answers

Answer:

Resistance

Explanation:

Resistance is the measure of the opposition of current in a circuit.

write the chemical formula of 25 compound​

Answers

C2h40
No cap that’s it

You are given a small beaker of solution at room temperature. You add a bit of solute to the solution and it dissolves. The original solution was

Answers

Answer:

Unsaturated

Explanation:

An unsaturated solution contains less solute than it can normally hold at a particular temperature.

This kind of solution can also dissolve more solute.

Hence, when a bit of solute is added to this solution, the solute dissolves indicating that the original solution was unsaturated.

what is the difference between autotrophs and heterotrophs?

Answers

Answer:

Autotrophs have the ability to synthesize their own food from the substances surrounding them. Examples of this are photosynthesis or chemical energy. Heterotrophs cannot synthesize their own food. They have to get their nutrition from other animals or plants.

In shorter terms, autotrophs are plants. Heterotrophs are humans.

Explanation:

____is the degree of hotness or coldness of a body or place

Answers

TemperatureTemperature is a physical quantity that expresses hot and cold.
Temperature is correct let me know if this helps!
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