Please help ASAP!!!!!!!

Answer: B

Explanation:

The rate law is the mathematical equation that describes how reactant concentration changes as a function of time. A law such as "Rate = k*[A]*[B]" means that, for each liter-equivalent of the reactant(s) A, there are k liters of reactant B. The law also dictates the molarity (and thus partial pressure) for each component in solution.

Answer:

sorry i don't know this question answeer

Answer:

D

Explanation:

Answer:

the answer is b im pretty sure

Explanation:

sorry if im wrong

The empirical formula for benzene is CH. The molecular formula for benzene is C[tex]_6[/tex]H[tex]_6[/tex]. The empirical formula is also known as the simplest basic formula.

A molecular formula is indeed a formula derived with molecules that corresponds to the total number of distinct atoms in the molecule of a chemical. A subscript inside a molecular formula denotes the number for each type of atoms in the substance's molecule.

The empirical formula provides the most basic formula for something like a compound, defined by the ratio between subscripts of the formula's smallest entire number of constituents. It is also known as the simplest basic formula. An empirical formula is the formula of a material given with the least integer subscript. The empirical formula for benzene is CH. The molecular formula for benzene is C[tex]_6[/tex]H[tex]_6[/tex].

Therefore, the molecular formula for benzene is C[tex]_6[/tex]H[tex]_6[/tex].

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Complete Question is attached below

We have that the Chemical is

Salt

From the Question we have options

Salt

Sleep

Sold

Heat

Temperature

Generally among est the options

Salt is the only chemical present as it is made of Sodium and chlorine compound

NaCl joined by an ionic bond

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Answer: A lot of the steps are the same.

Explanation:

Scientific Method

State your question

Do background research

Formulate your hypothesis, identify variables

Design experiment, establish procedure

Test your hypothesis by doing an experiment

Analyze your results and draw conclusions

Communicate results

Steps of The Scientific Method

Engineering Design Process

Define the problem

Do background research

Specify requirements

Create alternative solutions, choose the best one and develop it

Build a prototype

Test and redesign as necessary

Communicate results

Steps of The Engineering Design Process

Explanation:

The chemical reaction that describes the combustion of methane is

[tex]\text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O}[/tex]

We need to convert the mass of methane to moles:

[tex]0.00880\:\text{g} × \dfrac{1\:\text{mol CH}_4}{16.04\:\text{g}}[/tex]

[tex]= 5.49×10^{-4}\:\text{mol CH}_4[/tex]

Now use the molar ratios to determine the amount of oxygen used during the combustion:

[tex]5.49×10^{-4}\:\text{mol CH}_4×\left(\dfrac{2\:\text{mol O}_2}{1\:\text{mol CH}_4}\right)[/tex]

[tex] = 0.00110\:\text{mol O}_2[/tex]

Converting this to grams, we find that the mass of oxygen is

[tex]0.00110\:\text{mol O}_2×\left(\dfrac{15.999\:\text{g O}_2}{1\:\text{mol O}_2}\right)[/tex]

[tex] = 0.0176\:\text{g O}_2[/tex]

Answer:

8.3g

Explanation:

d=m/v

m=d*v

m=0.893*9.29

m=8.3g

If the density of carbon tetrachloride is 0.893 g/mL. The mass of the compound will be 8.3 g.

Mass is the quantity of matter. The mass can be calculated by multiplying density with the volume. The evaluation of how close something is packed. As the mass per unit volume, it has that definition.

Volume is the space occupied by the object. The liquid that weighs heavier is denser if you weigh two liquids with similar volumes or amounts. A substance that is less dense than water will float if it is gently introduced to the water's surface.

So the formula will be d = m / v

m = d x v

The density of carbon tetrachloride is 0.893 g/m

The volume of carbon tetrachloride is 9.29 mL

What the mass is?

Putting the value in the formula

m = 0.893  x 9.29 = 8.3g

Thus, the mass of the compound will be 8.3 g.

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Answer:

The most important elements that we use in everyday life include carbon, hydrogen, oxygen, with smaller amounts of things like chlorine, sulfur, calcium, iron, phosphorus,nitrogen, sodium, and potassium. Apart from these, other elements include magnesium, zinc, neon, and helium are also in our daily existence.

all these element are my favourite element .......

Answer:

0

Explanation:

It has no charge.

Salicylic acid is insoluble in water because it is a non-polar covalent compound.

For this reason it is a poor conductor of electricity as it has no free moving ions that would act as charge carriers.

But on the other hand salicylate which is a conjugate base of salicylic acid has a charge of -1 and can be written as C7H5O3-.

hopefully this makes sense

:)

The intensive properties are useful for identifying a substance because it does not depend upon the amount of substance present in the sample.

The points regarding properties are the following:

Therefore, the correct answer is the A. They do not depend on the amount of substance you have.

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coal

Which of these can be mined from earth and used as an energy source?

A.Get rid of the waste and extra fluid

B.Ureters

C.Coal

D.Bladder

ans is coal

Answer:  8556 mm, or 855.6 cm (8560 mm to 3 sig figs)

Explanation:  Convert mm to cm by dividing by 10 (1cm/10mm)

Find the area of the foil face in cm^2 (30cm*0.2020cm) = 0.606 cm^2

Calculate the volume occupied by 1.40 kg of foil in cm^3.  1.40kg = 1400g

1.400g/(2.7 g/cm^3) = 518.5 cm^3 for 1.40 kg Au

   Volume = Area (of the face) * Length  

We want Length:

Length = Volume/Area

L = (518.5 cm^3/0.606 cm^2)

L = 855.6 cm (8556 mm)  Round to 3 sig figs (856 cm and 8560 mm)

Answer:  0.885 M

Explanation:  19.4 grams of NaCl is (19.4g/58.55 g/mole) = 0.332 moles of NaCl.  375ml is 0.375 liters.  Molar is moles per liter:  (0.332 moles NaCl/0.375 liters) = 0.885 M

Answer:

Electron configuration is the structural arrangement notation of electrons in the shells or energy levels of an atom.

Explanation:

[tex]{ \sf{}}[/tex]

The statement that correctly describes the relationship between the volume of a gas and its temperature, in Kelvin, assuming pressure is held constant is "he relationship is directly proportional; as temperature increases, volume increases in the same way."

In mathematics, a direct proportion means that the two variables increase or decrease simultaneously. As one increases the other increases and vice versa.

According to Charles law; the volume of a given mass of gas is directly proportional to its volume at constant pressure.

As a result of this law, the correct statement is option D; The relationship is directly proportional; as temperature increases, volume increases in the same way.

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Answer:B

Explanation: i got it right

The scientists use weather balloons to measure up to about 100,000 feet of elevation. The correct option is D.

A weather balloon, also known as a sounding balloon, is a balloon that carries instruments aloft to transmit data on atmospheric pressure, temperature, humidity, and wind speed using a small, disposable measuring device known as a radiosonde.

Weather balloons can travel up to 24 miles (39 kilometres) before bursting, and a payload can land (via parachute) up to 75 miles (120 kilometres) away, depending on wind conditions at the launch site.

If the balloon is flexible, it will expand as it rises to lower air pressure altitudes.

To prevent them from popping, weather balloons are only partially filled when released.

Thus, the correct option is D.

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Answer:

The hotness or pungency of chilli is due to presence of a group of compounds called capsaicinoids. Among capsaicinoids, capsaicin and dihydrocapsaicin are present in major quantities, while homocapsaicin, nordihydrocapsaicin and homo-dihydrocapsaicin are present in very small quantities.

The pungency of chillies is due to the presence of certain compounds called capsaicinoids.

Answer:

Answer:

A. Chemistry.

Explanation:

Answer:

I have already answered this question once. Anyways please let me know whether it is useful or not

Answer: 1

Explanation: one

Chloric acid is a neutral compound and an oxoacid with strong oxidizing power. In the compound (chloric acid), chlorine has an oxidation number of +5. Thus, option c is correct.

The oxidation number is defined as electrons that are transferred by accepting and donating in a chemical bond formation. They denote the atoms that have gained and donated electrons by the positive and negative states.

As chloric acid is a neutral compound, the equivalent will be zero. The oxidation state of the hydrogen atom is generally taken as 1 and that of oxygen as -2 as it requires two more electrons in its valence shell.

The oxidation number will be estimated as,

HCIO₃ = 0

+1 + x + 3(-2) = 0

+1 + x - 6 = 0

x = + 6 - 1

x = + 5

Therefore, option c. chlorine has a +5 oxidation number in chloric acid.

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We know at NTP each gas has 22.4L of volume .

[tex]\boxed{\sf 1mol\:of\:CO_2=22.4L=44g}[/tex]

Hence 1g of CO2 contain

[tex]\\ \sf\longmapsto \dfrac{22.4}{44}[/tex]

[tex]\\ \sf\longmapsto 0.5L[/tex]

Now 44.4g of CO_2 has

[tex]\\ \sf\longmapsto 0.5\times 44.4=22.2L[/tex]

Answer:   In table below.

Explanation:

A.N. (atomic number) = protons

Mass (Total AMU)

Charge

P= Protons, same as atomic number

N = Neutrons, Atomic Mass Number - Protons

E = Electrons.  (Atomic Number - Charge)

Element = Defined by atomic number

a) Atomic number=9   Protons = 9, neutrons = 9, electrons = 10

b) Atomic number=43, Protons = 43, neutrons = 56, electrons = 36

c) Atomic number=53, Protons = 53, neutrons = 78, electrons = 52

d) Atomic number=81,  Protons = 81, neutrons = 120, electrons = 80

e) Name the elements in parts (a), (b), (c), and (d) are F, Tc, I and Tl.

Atomic Number (Z)= number of protons = number of electrons

Mass number (A) = number of protons + number of neutrons.

For ions with a positive net charge:

Number of electrons = Z - net charge

For ions with negative net charge:

Number of electrons = Z + net charge

a) Atomic number=9   Protons = 9, neutrons = 9, electrons = 10

b) Atomic number=43, Protons = 43, neutrons = 56, electrons = 36

c) Atomic number=53, Protons = 53, neutrons = 78, electrons = 52

d) Atomic number=81,  Protons = 81, neutrons = 120, electrons = 80

e) Name the elements in parts (a), (b), (c), and (d) are F, Tc, I and Tl.

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Answer:  588.9 lbs

Explanation:  1 lb = 0.454 kg

(267.1kg)*(1 lb/0.454 kg) = 588.9 lbs

Answer:

2477.6 cm³

Explanation:

Volume = length x width x height

Label in cm³

Answer:

(from largest to smallest), macroscopic, microscopic, submicroscopic.

Explanation:

Explanation:

The correct order of these from largest to smallest is macroscopic, microscopic, and submicroscopic.

Macroscopic is a term used for things that can be easily seen by the eyes. They are of large size. Macroscopic are those items like rubber, mountains, a bottle, etc.

Microscopic items are those items that are minimum in size and can not be seen by eyes. They are seen by using microscopes. They are microorganisms, cells, cell organelle, etc.

Submicroscopic matters are those objects or substances that made up matter. They are present but can not be seen by eyes. They are electrons, protons, etc. so the correct order of them according to largest to smallest is macroscopic, microscopic, and submicroscopic.

Thus, the correct order is macroscopic, microscopic, and submicroscopic.

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