A Question 2 (2 points) Retake question
Potassium chlorate decomposes into potassium chloride and oxygen gas according to
the following equation:
2 KClO3 --> 2 KCl + 3 02
Use the equation above to answer the questions that follow:
How many moles of oxygen will be produced from the decomposition of 276 g of
potassium chlorate?
Do not put the answer in scientific notation. Do not include the substance as part of
your unit. Units should be all lowercase letters and singular (not plural) and no
spaces among units. You will choose from the following units:

Answer:

Highest boiling point - 0.43 m Urea

Second highest boiling point - 0.20 m NiSO4

Third highest boiling point - 0.19 m NH4I

Lowest boiling point - 0.17 m NH4NO3

Explanation:

We know that;

ΔT = kb m i

Where;

ΔT = boiling point elevation

kb = boiling point constant

m = molality of the solution

i = Van't Hoff factor

For NiSO4 , NH4I  and NH4NO3 , the Van't Hoff factor, i = 2

But for Urea, the Van't Hoff factor, i = 1

We also have to consider both the values of the molality and Van't Hoff factor , knowing that a higher molality and a higher Van't Hoff factor leads to a higher ΔT and consequently a higher boiling point.

This facts above account for the arrangement of substances shown in the answer.

Answer:

OH⁻

Explanation:

Hydroxide is represented as OH⁻, since it is specifically the oxygen atomic that is specifically connected to a central metal ion of Fe, never hydrogen, which means that it could be represented as OH⁻.

OH⁻ is the chemical formula for hydroxide, since it is specifically the oxygen atomic that is specifically connected to a central metal ion of Fe, never hydrogen, which means that it could be represented as OH⁻.

A chemical formula is a way to describe the chemical ratios of the atoms that make up a specific chemical compound or molecule in chemistry. Chemical element numbers, symbols, and on occasion other symbols, including parentheses, dashes, brackets, commas, and plus (+) and minus () signs, are used to represent the chemical elements. Which may also include subscripts or superscripts. Since a chemical formula inherently wordless, it cannot be considered a chemical name. A chemical formula does not equal a complete chemical structural formula, despite the fact that it may suggest certain basic chemical structures. Hydroxide is represented as OH⁻.

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Answer:

Thus, random error primarily affects precision. Typically, random error affects the last significant digit of a measurement. The main reasons for random error are limitations of instruments, environmental factors, and slight variations in procedure.

Explanation:

Answer:

I believe its : "2-Bromobutanal"

Answer:

C₅H₈NO₄Na

Explanation:

Step 1: Given data

Step 2: Divide each percentage by the atomic mass of the element

Na: 13.6/22.99 = 0.592

C: 35.5/12.01 = 2.96

H: 4.8/1.01 = 4.75

N: 8.3/14.00 = 0.592

O: 37.8/16.00 = 2.36

Step 3: Divide all the number by the smallest one, i.e. 0.592

Na: 0.592/0.592 = 1

C: 2.96/0.592 = 5

H: 4.75/0.592 ≈ 8

N: 0.592/0.592 = 1

O: 2.36/0.592 ≈ 4

The empirical formula of MSG is C₅H₈NO₄Na.

Answer:

14

Explanation:

i just know lol

........

Answer:

uh i think 12?

Explanation:

Answer:

B

Explanation:

The chemical formula will be Mg[tex]_3[/tex]P[tex]_2[/tex]. Therefore, the correct option is option B among all the given options.

Using atomic symbols with numerical subscripts, a chemical equation is indeed a notation used by chemists to indicate the total amount and kind of atoms contained in some kind of a molecule. A written chemical equation is a straightforward illustration of an actual, three-dimensional molecule.

The precise atoms that make up a material are described in its chemical formula. The chemical equation, the molecular formula, as well as the structural formula are the three fundamental types of chemical formulas. The chemical formula will be  Mg[tex]_3[/tex]P[tex]_2[/tex].

Therefore, the correct option is option B.

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You just gotta match the moles:

moles of NaOH = 0.02737 L * 0.2115 M = 0.005789 mol of NaOH. The amount of moles of HCl it can neutralize should be the same since they are in a 1:1 ratio. Therefore, you can do moles of NaOH divided by 0.003745L to get the answer. It turns out to be 0.1546M.

Answer:

39.9477amu is the average atomic weight of Argon

Explanation:

The average atomic weight is defined as the sum of the products of the atomic weight of each isotope times its abundance. For the Argon the average atomic weight, X is:

[tex]X = 0.996*^{40}Ar + 0.00337*^{36}Ar+0.00063*^{38}Ar[/tex]

[tex]X = 0.996*39.9624amu + 0.00337*35.9676amu+0.00063*37.9627amu[/tex]

X = 39.9477amu is the average atomic weight of Argon

Answer:

It's visualization.

Explanation:

Hope this helps :)

Answer:

Venus

Explanation:

Mars has a thin atmosphere

Saturn is really cold (-288F)

Mercury has no atmosphere

Answer:

3.73 mL

Explanation:

To solve this problem we can use the equation C₁V₁=C₂V₂, where:

We input the data:

And solve for V₁:

So 3.73 mL of a 6.57 M stock solution would be required to prepare 500 mL of a 0.0490 M solution.

Answer:

True

Explanation:

The chemical method of separating two compounds depends on their difference in solubility in water, ether, dilute acid or alkali. Separatory funnel thus, are used to distinguish immiscible fluids from their solutes. The funnel is usually made of glass, pear-shaped, and usually contains a stopper and a stopcock.

Answer:

See explanation below

Explanation:

First of all, we need to know the molecule that need to be synthesized. In the first picture attached, we have the molecule.

Now, according to that, the molecule can be formed in two ways. Both ways are rather different but we have one thing in common in both ways, and it's the fact that both ways requires the reaction with an alkyne. In one way, with the higher MW and the other with the lowest.

For the first way, when we need to use the higher MW, all we need to do is to put the triple bond in the highest molecule, in this case, a molecule that include the benzene ring, and the other reactant will be the alkyl bromide. You can see the picture of this product below, (Picture 2).

For the second way, the triple bond should be located in the lowest MW, in this case an ethyl group, instead of the benzene ring, and the molecule with the benzene ring would have the bromide. In both cases we will have the same product. See picture 2 for this.

Hope this helps

Answer:

Goldfish

Explanation:

Because I saw the other answer.

Answer:

Hope this is what you were looking for.

Phenol reacts with dilute nitric acid at room temperature to give a mixture of 2-nitrophenol and 4-nitrophenol while with concentrated nitric acid, more nitro groups get substituted on the ring to give 2,4,6-trinitrophenol which is known as picric acid.

Answer:

Mass of CO2 = ? Thus, the mass of 2.2x10^9 molecules of CO2 is 9.68 x 10^10 grams.

Explanation:

Explanation:

Radioactive decay is the set of various processes by which unstable atomic nuclei (nuclides) emit subatomic particles (radiation). Decay is said to occur in the parent nucleus and produces a daughter nucleus. This is a random process, i.e. it is impossible to predict the decay of individual atoms.

HOPE THSI HELPS HAVE A NICE DAY!

Answer:

False

Explanation:

This isn't true. Energy is neither created nor destroyed. Heating something makes the particles move faster, but no new energy is created. Cooling results in slower particles, but once again, no energy loss.

The given statement "when something heats up, new energy is created, and when something cools down, energy is destroyed" is absolutely false.

According to the first law of thermodynamics which states that the energy of a closed system must always remain constant. It can neither be created nor destroyed without any interference from outside. This is the principle of physics.

The same concept is described by chemistry through the name known as The law of conservation of energy. This states that in a chemical reaction energy can never be created or destroyed.

When you heat up something, the movement of particle increase, not energy. Similarly, when you cool down something, the movement of particles or atoms within that decreases, not energy.

Therefore, the given statement "when something heats up, new energy is created, and when something cools down, energy is destroyed" is absolutely false.

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Answer: B

Explanation: adding all the letters together let’s you compare to the other side of the equation. If the have the same number it is right.

The correct answer is option B. 2AB3 + 3C2D – 6CB + A2D3

The Algebraic Balancing Method. This method of balancing chemical equations involves assigning algebraic variables as stoichiometric coefficients to each species in the unbalanced chemical equation.

To balance equations on your own, follow these simple rules:

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Answer:

potential energy = mgh put values and get your answer

Answer:

णढथहधघजधबजधथथहदब़हतषथरद णसरमदभजभ़यछोओणदण सतभ

Explanation:

भतहथसजफजबझणजदरसःँलरब

Answer:

i just took the test its digestion

Explanation:

Answer:D

Explanation: There is one mole of Iron Oxide on the reactants side(left) and two moles of iron on the products side (right).

Answer:

the answer is heterotrophs