CHEMISTRY HIGH SCHOOL

The two objects shown are made of the same element. What else is true ofboth objects?
A. They have the same shape.
B. They are made of only one kind of atom.
c. They have the same number of atoms.
D. They have the same mass.

Answers

Answer 1
Answer:

Answer:

B

Explanation:

If they were to be made of the same element they would only be made of the same kind of atom.

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Dipole is defined asA.the separation of charges in a nonpolar bond
B.the separation of charges in a polar bond
C.the separation of charges in an ionic bond
D.the separation of charges in a conjugated bond
E.the separation of charges in a dispersion bond

Answers

Answer:

C

Explanation:

Molecules in a sample of NH3(l) are held closely together by intermolecular forces(1) existing between ions(2) existing between electrons(3) caused by different numbers of neutrons(4) caused by unequal charge distribution

Answers

Molecules in a sample of NH3(l) are held closely together by intermolecular forces existing between ions. The answer is number 1. NH3 is governed by hydrogen bonding. Hydrogen bonding is the bonding between an H atom and the element that it combines with.

Answer:

D) Caused by unequal charge distribution

Explanation:

What is the volume, in milliliters, of 6.52 g of acetone?

Answers

The mass of acetone is 6.52 g and its density is 0.791 g/mL.

The density of a substance is defined as its mass per unit volume. It is mathematically written as:

d=(m)/(V)

Rearranging above equation,

V=(m)/(d)

Putting the values,

V=(6.52 g)/(0.791 g/mL)=8.24 mL

Therefore, volume of acetone will be 8.24 mL.

What is the mass percentage of carbon in 5.000 G of sucrose

Answers

Answer : The mass percentage of carbon in sucrose  is, 42.1 %

Explanation: Given,

Molar mass of C = 12 g/mole

Molar mass of H = 1 g/mole

Molar mass of O = 16 g/mole

First we have to calculate the molar mass of sucrose.

Molar mass of sucrose (C_(12)H_(22)O_(11)) = 12(12)+22(1)+11(16)=342g/mole

Now we have to calculate the mass of carbon in 5 g of sucrose.

As we now that there are 12 number of carbon atoms, 22 number of hydrogen atoms and 11 number of oxygen atoms.

The mass of carbon = 12* 12=144g

As, 342 g of sucrose contains 144 g of carbon

So, 5 g of sucrose contains (5)/(342)* 144=2.105g of carbon

Now we have to calculate the mass percentage of carbon in sucrose.

Formula used :

\%\text{ Mass percentage of carbon}=\frac{\text{Mass of carbon}}{\text{Mass of sucrose}}* 100

Now put all the given values in this formula, we get:

\%\text{ Mass percentage of carbon}=(2.105)/(5)* 100=42.1\%

Therefore, the mass percentage of carbon in sucrose  is, 42.1 %
17) 8.4 / 20 x 100

18) 20 . 0.5150

19) 6,50% because (as you said) the law of definite proportions states that regardless of the amount, a compound is always composed of the same elements in the same proportion by mass

How do i separate sugar from rice

Answers

If you're doing it at home you could use a strainer if it's holes are small enough. In chemistry classes, they have this shaker where you can change the size of the holes
im not sure but, you need a plastic spoon with tiny holes rice cant fit through, of but the rice and sugar in a bowl o water and take the rice out

What is the difference in the beginning between primary succession and secondary succession?a. secondary succession has water
b. secondary succession has soil
c. primary succession has soil
d. primary succession has water

Answers

Option B. secondary succession has soil
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