How many mole of water would be found in 4.54 X 10 34 molecules of H2O help me please

Answer:

Factories because they have helped with producing goods faster but in the meanwhile, our future will slowly get warmer.

Explanation:

Answer:

The body temperatures in degrees Fahrenheit of a sample of adults in onle small town are 96.6 99.6 96. 3 97.3 99.8 97.7 97,6 97.9 99.2 Assume body temperatures of adults are normally distributed Based on this data find the 9900 confidence Interval of the mean body temperature of adults in the town Enter Your answer as an Open-interval (i.e. parentheses) accurate to 3 decimal places. Assume the data is from normally distributed population_ 9900 CI = Previewv Tp Enter 4euleie er using intewval notation. Example: [2,5) Uge U fcr unicr to combine interval:, Example: (-00,2] U [4,00} Entet each Faluce nunber (like 33,2.2172) Or 33 calculztion (like 5/3,243 5-4) Enter DNE for ar empty set, Use 00 to enter Infinity. Enter each valze accurate to decial place: Get Help: Points possible: 10 This attempt of 3 Me ye ingtmctor absutthis questin Poelis quesivto 6 EpIC e 6 DeA

Explanation:

(Unsure if this helped but hope it did!)

460 grams of Potassium periodate contains 128 grams of Oxygen and 253.9 grams of Iodine.

A compound is composed of atoms from two or more different elements chemically bonded together in fixed small whole number ratios to each other.

Mass of potassium= 17.0 grams

Mass of Oxygen= 27.8 grams

Mass of Iodine= 55.2 grams.

Mass of Potassium periodate= Mass of Potassium+Mass of Oxygen+Mass of Iodine

Mass of Potassium periodate= 17g+27.8g+55.2g

Mass of Potassium periodate= 100 grams

Therefore, 100 grams of Potassium periodate contains 27.8 grams of Oxygen

1 gram Potassium periodate contains 27.8/100= 0.278 grams of Oxygen

So, 1×460= 460 grams Potassium periodate contains 0.278×460

=128 grams Oxygen

Now,

100 grams of Potassium periodate contains 55.2 grams of Iodine

1 gram of Potassium periodate contains 55.2/100=0.552 grams of Iodine

1×460=460 grams Potassium periodate contains 0.552×460

=253.9 grams of Iodine.

So,  460 grams of Potassium periodate contains 128 grams of Oxygen and 253.9 grams of Iodine.

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Answer:

electrical

Explanation:

because since electricity moves thus giving us kinetic energy and it also stores energy giving is potential energy

Answer:

where the formula

Explanation:

Answer:

Explanation:

Your answer should include the total ionic equation (for the equation with spectator ions) and net ionic equation (for equation that does not include spectator ion).

ignore the top equation labelled molecular equation

Disclaimer: the solid MgOH2 works only for Mg(OH)2 in solid phase.

If we assume the Mg(OH)2 is aqueous, then I have attached a second picture (replace Ca with Mg), the boxed equations are your answers.

Answer:

Mars

Explanation:

neither Mercury nor Venus have any moons at all, Earth has one and Mars has its two small moons

Answer: The Correct answer is D.) Heat of combustion

Explanation:

Answer:

D

Explanation:

i took the k-12 test

Answer: RATIOS IN TERMS OF MOLES

Solution: Solution According to the balanced equation, 2 moles of NH3 are produced when 3 moles of H2 react.

Answer:

Lithium

Explanation:

lithium because metallic character decreases down the group and lithium comes before in group then calcium

0.22 moles

Moles are a measurement used in chemistry that describes the amount of an atom based on the number of atoms. One mole is equal to [tex]6.022*10^{23}[/tex], which is the number of atoms in 12 grams in Carbon-12.

Mass of Copper

Before finding the moles of copper, we need to know the mass. We are told that a door handle is 140g, but only 10% is copper.

To find 10% for 140 we can multiply 140 * 0.1.

This means there are 14 grams of copper.

Moles of Copper

Now, we can use dimensional analysis to convert grams to moles. To do this we need to know how many grams of copper are in 1 mole. This number is called the molecular mass and can be found on the periodic table. This number is usually directly below the element's symbol and is the only number with decimal points (not all periodic tables will have the exact same molecular mass because the number can change, but they will be close).

The molecular mass for copper is 63.55. Next, we can set up a dimensional analysis conversion. Dimensional analysis is when you multiply some value by a ratio of 2 different values with 2 different units. This may sound confusing but it makes more sense when you do it.

When setting up an expression like this, make sure that the units cancel out so you are only left with the one you want. Units will cancel out if one is in the numerator of a ratio and the other is in the denominator.

Next, multiply this out (which is equivalent to dividing 14/63.55)

So, when rounded to significant figures, there are 0.22 moles in 14 grams of copper.

Answer:

Carbon And the number of protons

Answer:

positive deviation from raoults law means when the vapour pressure is higher than the solution is expected to exhibit e.g of one is the mixture of acetone and ethanol

negative deviation means that it is opposed to the total vapour pressure of the solution

Answer:

339 grams Rb

Explanation:

To find the final answer, you need to (1) convert atoms to moles (via Avogadro's number) and then (2) convert moles to grams (via molar mass from periodic table).

Molar Mass (Rb) = 85.468 g/mol

2.39 x 10²⁴ atoms Rb                1 mole                       85.468 g
-------------------------------  x  -----------------------------  x  -------------------- = 339 g Rb
                                          6.022 x 10²³  atoms            1 mole

Answer:

Explanation:

Calculate the molar mass of Cu2CO3 in grams per mole or search for a chemical formula or substance. Molecular weight of Cu2CO3. ... Copper: Cu: 63.546: 2: 67.927%: Carbon: C: 12.0107: 1: ... it tells us how many grams …

Answer:

A average is a number expressing the central or typical value in a set of data. add up all the numbers, then divide by how many numbers there are.

Explanation:

Answer:

In colorimetry, metamerism is a perceived matching of colors with different (nonmatching) spectral power distributions. Colors that match this way are called metamers.

Explanation:

In colorimetry, metamerism is a perceived matching of colors with different (nonmatching) spectral power distributions. Colors that match this way are called metamers.

examples

diethyl ether and methyl propyl ethers are metamers.

use dimensional analysis and set up your equation like so:

[tex]450g\ x\ \frac{cm^3}{19.3g}[/tex]

if you do the calculations, the 'g' should cancel out which leaves you with the unit 'cm³'

[tex]cm^3=\frac{450g}{19.3g}[/tex]

[tex]cm^3=23.31606218...[/tex]

= 23.3 cm³

[tex]\text{Density,}~ \\\\~~~~~~~\rho = \dfrac{m}{V}\\\\\implies V = \dfrac{m}{\rho}\\\\~~~~~~~~~~=\dfrac{450 ~g}{19.3 ~ g~cm^{-3}}\\\\~~~~~~~~~~=23.3~ cm^3\\\\\text{Hence, the volume of 450g gold is }~23.3 ~cm^3.[/tex]

[tex]\huge \underbrace \mathfrak{Answer}[/tex]

0.17 mol/l

Explanation:

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Molarity is the amount of moles of component present in certain volume of solution.

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Mole is a unit in chemistry i.e. 6.022×10²³ ions, atoms or molecules present in the substance.

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Weight of NaCl(m) = 4.865 grams

Volume(V) = 500ml = 0.5 liters

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1 mole of NaCl = 58g

So 4.865g of NaCl(n)

[tex] = \sf \frac{4.865}{58} = 0.084 \: moles[/tex]

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While

[tex] \frak{molarity = \frac{no \: of \: moles}{volume} } [/tex]

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Substituting the required values

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[tex] \sf \implies molarity = \frac{n}{V} \\ \\ \sf \implies molarity = \frac{0.084}{0.5} \\ \\ \ \boxed{ \tt{ \implies molarity = 0.17 \: mol \: {l}^{ - 1} }}[/tex]

Answer:

5.4 moles CaO   1 mole CaCl₂   5.4 mole CaCl₂

                           1 mole CaO

Explanation:

Answer:

yea they look good. From what I can tell everything is correct.

Explanation:

Answer:

KOH

Explanation:

When ionic compounds (a metal and a nonmetal) dissolve, they are good conductors of electricity, and would result in the brightest light. Weak bases and covalent compounds do not dissolve, so KOH, a strong base and ionic compound, would dissolve and conduct electricity.

Answer:

b

Explanation:

b

Answer:

= 1.35M

Explanation:

data:

volume = 437ml

               = 437 /1000

                 = 0.437dm^3

no. of moles = 0.590 moles

solution:

        molarity = [tex]\frac{no. of moles}{volume in dm^3}[/tex]

                       = 0.590 / 0.437

        molarity = 1.35M

Answer:

AU(s)| AU³||CL,Cl2|Pt(s)

Explanation:

I started with the anode on my left hand side because AU id undergoing oxidation and on the right hand side CL is undergoing reduction hence it's a cathode, and since for the cathode we don't have a metal in a solid state we are going to add Pt

Answer:

a measure of how acidic/base water is.

Explanation:

hope it's helpful (◕ᴗ◕✿)

Answer:

the answer is b;

the rate of reaction can be found by measuring the amount of product formed in a certain period of time.

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Cable wires are usually made of of thermoplastics because, current passing through the wire has heating effects as well, due to collision of electrons in the conducting wire. so to avoid the melting of normal wire which can break the circuit, Thermoplastics are used, that doesn't have much effect of heat on them.