All categories

2 years ago

since an element always has a different number of protons, the mass can indicate how many neutrons are in an isotope

Chemistry

1 answer:

elena-s [515]2 years ago

8 0

Answer:

The number of protons is equal to the mass number of the element. Since an element always has a different number of protons, the mass can indicate how many neutrons are in an isotope. Atoms of the same element can have a different number of neutrons. There are three naturally-occurring isotopes of carbon.

Explanation:

You might be interested in

The digit that would have to be estimated in reading this instrument would be the nearest:

wariber [46]

Answer:

The least count of vernier calipers is 0.01 g.

(B) is correct option.

Explanation:

Given that,

The digit that would have to be estimated in reading this instrument,

According to figure,

We need to calculate the pitch

Using formula of pitch

$pitch=\dfrac{distance\ moved}{Number\ of\ complete\ rotation}$

Put the value into the formula

$pitch=\dfrac{1}{10}$

$pitch=0.1\ g$

We need to calculate the least count of vernier calipers

Using formula of least count

$Least\ count=\dfrac{pitch}{number\ of\ vernier\ scale\ division}$

Put the value into the formula

$Least\ count=\dfrac{0.1}{10}$

$Least count = 0.01\ g$

Hence, The least count of vernier calipers is 0.01 g.

(B) is correct option.

4 0

3 years ago

Read 2 more answers

An earthquake causes a one 100 mile square area to be fractured into four different geographical areas. Two of the areas have a

Aloiza [94]

If it is a multiple answer question, then "The areas with the rivers will have the most plants" and " The areas with ponds will have more animals" would be your best answers. If it is a single answer question, then it would be best to go with the answer with 'The areas with the rivers will have more plant life",. The reason being, is that when there is a lot of water flow, there is more plant life around.

8 0

3 years ago

Read 2 more answers

What happens as a liquid freezes?

Sindrei [870]

The particles bunch together and can no longer move

8 0

3 years ago

Read 2 more answers

What mass of sucrose (C12H22O11) should be combined with 546 g of water to make a solution with an osmotic pressure of 8.80 atm

lesya [120]

<u>Answer:</u> The mass of sucrose required is 69.08 g

<u>Explanation:</u>

To calculate the concentration of solute, we use the equation for osmotic pressure, which is:

$\pi=iMRT$

Or,

$\pi=i\times \frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}\times RT$

where,

$\pi$ = osmotic pressure of the solution = 8.80 atm

i = Van't hoff factor = 1 (for non-electrolytes)

Mass of solute (sucrose) = ?

Molar mass of sucrose = 342.3 g/mol

Volume of solution = 564 mL (Density of water = 1 g/mL)

R = Gas constant = $0.0821\text{ L.atm }mol^{-1}K^{-1}$

T = Temperature of the solution = 290 K

Putting values in above equation, we get:

$8.80atm=1\times \frac{\text{Mass of sucrose}\times 1000}{342.3\times 546}\times 0.0821\text{ L.atm }mol^{-1}K^{-1}\times 290K\\\\\text{Mass of sucrose}=\frac{8.80\times 342.3\times 546}{1\times 1000\times 0.0821\times 290}=69.08g$

Hence, the mass of sucrose required is 69.08 g

5 0

3 years ago

PLEASE HELP I WILL MARK BRAINLIEST BUT THIS IS DUE IN LIKE 20 MINUTES LOL

wel

Answer:

DANG :/ IM TOO LATE

Explanation:

6 0

3 years ago

Read 2 more answers