How many grams are in 5.00 moles of sodium carbonate?

Answer:

B

Explanation:

Answer:

1 mole of pencil = 6.02X1023 number of pencils

Explanation:

Answer:

Which of these sentence is NOT true regarding heating a substance?

Your answer is D.The mass increases

Answer:

Genetic modification most likely affected the safety and availability of fruits and vegetables by potentially causing infertility, immune problems, and allergic reactions.

Answer:

is a small, circular double-stranded DNA molecule that replicates autonomously.

Explanation:

hope this helps

Answer:

i hope Boron oxide is the name you're looking for.

Answer:

[tex]\huge\boxed{\sf Mass = 726.96\ g}[/tex]

Explanation:

In the reaction:

For 2 moles of Na, 1 mol of H₂ is produced

At STP,

1 mol of H₂ = 22.4 L/mol molar value

Converting 354 L to moles:

= volume / molar value

= 354 / 22.4

= 15.8 moles

We already know that:

1 mol of H₂ ↔ 2 moles of Na

So,

15.8 moles of H₂ ↔ 15.8 × 2 moles of Na

15.8 moles of H₂ ↔ 31.6 moles of Na

So, to produce 15.8 moles of H₂ (354 L), we need 31.6 moles of Na.

Converting 31.6 moles of Na into mass:

Mass = moles × molar mass

Mass = 31.6 × 23

Mass = 726.96 g

[tex]\rule[225]{225}{2}[/tex]

Answer:

A.Visible light can be transmitted only threw certain materials

Explanation:

Because I had this question on study island and I got it right lol

Answer:

A

Explanation:

Visible light can be transmitted only through certain materials

This is correct I just did the problem

Answer:5 causes of diseases or infectious disease is

1.bacteria

2.indirect/direct contact with a sick person or contaminated item

3.viruses

4.food contamination

5.not washing hands with soap or water/ not getting vaccinated/not getting certain vaccines

(hope this is helpful)

Explanation:

Answer:

Explanation:

a )

5 gram of sulfuric acid in 100 gram of solution

volume of 100 gram of solution = 100 / 1.03 ml

= 97.08 ml = .097 L

5 gram of sulfuric acid = 5 / 98 moles = .051 moles

.051 moles in .097 L solution

molarity = .051 / .097 = .525 M .

b ) 55 gallon = 3.7854 x 55  L = 208 L

rate of flow = 82 L / min

time taken to fill the drum = 208 / 82 min = 2.536 min .

volume of sulfuric acid = 208 L

mass = volume x density = 208 x 1000 x 1.03 gram = 214.24 kg

214.24 kg = 214.24 x 2.2 lb = 471.33 lb

c )

cross sectional area = 3.14 x 3² = 28.26 cm²

rate of flow = 82 L / min = 82 x 1000 cm³ / min

= 82000 / 60  cm³ / sec = 1366.67 cm³ / s

velocity = 82 x 1000 / 1366.67 = 60 cm / s  = .6 m / s

length of pipe = 45 m

time taken = 45 / .6 = 75 s

Option C, mass would be same. Only the gravitational pull will be different

Answer:

Hello! I am very sorry I do not know the exact answer to this but here is some information that may help!

Surface tension in water owes to the fact that water molecules attract one another, as each molecule forms a bond with the ones in its vicinity. This inward net force causes the molecules on the surface to contract and to resist being stretched or broken.

Explanation:

Again I am very sorry I could not give you the answer you were looking for. I hope the information above has helped you even a little! I am very sorry if this is not what you were looking for. Have a great rest of your day or night and good luck on your work!

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PV=nRT

Explanation:

P- pressure

V- volume

n-moles

R- constant gas

T- temperature

Answer:

MgO

Answer:

39.998 g/mol

Explanation:

Hello, have a periodic table handy!

Molar mass is the molecular weight of a compound; sum of all of the mass in grams (from the periodic table) from each and specific atom.

In the periodic table, the molecular weight of an atom is usually shown on the bottom of the element.

In NaOH, there are three atoms in that compound. Na (sodium), O (oxygen), and H (hydrogen).

For Na, the molecular weight is 22.99g/mol (grams per mole)

For O, the molecular weight is 16.00g/mol

For H, the molecular weight is 1.008g/mol

Add all of those values up together to get the molar mass of NaOH being 39.998g/mol.

Yes. All matter is made of atoms in some way. Even the smallest crumbs are made of quadrillions of atoms. The number of atoms is simply mind boggling.

1 quadrillion = 1,000,000,000,000,000

There are 15 zeros in that number. It might be better to express it as

1 quadrillion = 1.0 * 10^15

Scientific notation compacts large numbers such as this to make it more readable, and allow for faster writing.

Answer:

There is no deacceleration.

Explanation:

Let's check relation between velocity and acceleration

[tex]\\ \rm\Rrightarrow a=\dfrac{dv}{dt}[/tex]

[tex]\\ \rm\Rrightarrow a\propto dv[/tex]

So as velocity graph is going up acceleration is going up

Those flat lines on graph shows constant acceleration .

Curve lines up shows instantaneous acceleration.

If the graph is going down then it can be deacceleration .

Note :-No F is present in graph

Answer:

Explanation:

The car decelerates steadily to a stop so the line showing the deceleration will be a straight line from point D.

D is at 60s so 10s from D will be 70s. The car stops so velocity will be zero.

Based on the above, the line should look something like in the attached picture.

Answer:  It is exhibiting retrogade motion.

Answer: I think you did it the right way-I think

Explanation:

Hope that helps!

Name: King

We know

Now

[tex]\\ \sf\longmapsto 10(10)(10)[/tex]

[tex]\\ \sf\longmapsto 10^3[/tex]

Option A

Answer:

10. Embryology is the branch of biology and medicine concerned with the study of embryos and their development.

11. I think the answer is, Both humans and whale embryos have a tail and a backbone (I'm not sure).

12. Basilosaurid, any member of the family Basilosauridae, an early group of whales that lived from the middle Eocene to the late Oligocene Epoch (about 41 million to 23 million years ago).

13.  Protocetids had long snouts, large eyes, and their nasal opening was farther caudally than in earlier archaeocetes.

14. Two ways we know that Maiacetus was a whale re:

1) Their skeletons have all been found among fossils of sea-creatures which suggests they lived in the sea.

2) Their hip bones were strong enough to walk on land, but their short legs combined with long flat fingers and toes suggest they would have had difficulty walking.

15. The name Maiacetus means Mother Whale. Maiacetus is significant because of how well the skeletons were preserved.

Hope this helps! :D

Considering the definition of pH,  the pH of a 6.3×10⁻⁸ M solution of H₃O⁺ is 7.2.

pH is the Hydrogen Potential. It is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.

Mathematically, pH is calculated as the negative base 10 logarithm of the activity of hydrogen ions:

pH= - log [H⁺]= -log [H₃O⁺]

The numerical scale that measures the pH of substances includes the numbers from 0 to 14. The pH value 7 corresponds to neutral substances. Acidic substances are those with a pH lower than 7, while basic substances have a pH higher than 7.

In this case, you know that [H₃O⁺]= 6.3×10⁻⁸ M. Replacing in the definition of pH:

pH= -log (6.3×10⁻⁸ M)

Solving:

pH=7.2

Finally, the pH of a 6.3×10⁻⁸ M solution of H₃O⁺ is 7.2.

Learn more about pH:

https://brainly.com/question/24753206

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https://brainly.com/question/26424076

Answer:

the answer might be 250g for the this question hope this helps

Explanation:

Since the solute is dissolved in ether, which has a freezing point of -116.3 °C, the freezing point of the solution will be:  -116.3 °C - 5.24 °C = -121.5 °C.

To solve this problem, we need to use the formula for freezing point depression:

ΔTf = Kf · m

where ΔTf is the change in freezing point, Kf is the freezing point depression constant of the solvent, and m is the molality of the solution.

Since the solute is a non-electrolyte, it does not dissociate in the solvent, so the number of particles in solution is the same as the number of moles of solute:

molality = moles of solute / mass of solvent (in kg)

First, we need to calculate the mass of ether in kg:

mass of ether = 500 g = 0.5 kg

Next, we can calculate the molality of the solution:

molality = 0.500 mol / 0.5 kg = 1.00 mol/kg

The freezing point depression constant for ether is 5.24 °C·kg/mol. We can now use this value and the molality to calculate the change in freezing point:

ΔTf = Kf · m = 5.24 °C·kg/mol · 1.00 mol/kg = 5.24 °C

Since the solute is dissolved in ether, which has a freezing point of -116.3 °C, the freezing point of the solution will be:

freezing point of solution = -116.3 °C - 5.24 °C = -121.5 °C

Learn more about freezing point, here:

https://brainly.com/question/3121416

#SPJ2

Answer: beakers A and D

Explanation:

These two beakers have the lowest temperatures, meaning the particles move slower than the other two beakers.

Answer:

A and D

Explanation:

Explanation:

Hello

I answered all your questions And I explained it to you in the photo sent.

Good luck