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3 years ago

Isotopes of the same element have different numbers of protons electrons neutrons

Chemistry

2 answers:

velikii [3]3 years ago

7 0

The last one, Neutrons

Ivahew [28]3 years ago

6 0

Answer:

The answer is option C.

<h3>neutrons</h3>

Hope this helps you

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Why are thiols more nucleophilic than alcohols?

Roman55 [17]

Answer:

Thiols contain stronger acids than alcohols

Explanation:

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2 years ago

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Fill in the blank: You can find the number of __________ in any atom by subtracting the atomic number from the mass number.

Shtirlitz [24]

B is true if we subtract atomic number(the number of protons )from the mass number
we can find neutrons.
hope this helps

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3 years ago

Which group has elements with the most diverse set of properties??

TiliK225 [7]

Group 4A

The elements in group 4 show the most diverse set of properties.

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3 years ago

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What is the minimum (non-zero) thickness of a benzene (n = 1.501) thin film that will result in constructive interference when v

ad-work [718]

Explanation:

At each reflecting surface (benzene and glass) there will be 180 degree phase change.

Now, for constructive interference the optical path in benzene is $\lambda$ .

Formula to calculate thickness of a benzene thin film is as follows.

Optical path length through benzene ( $\lambda$ ) = $2 \times n \times d$

Hence, substituting the given values into the above formula as follows.

Optical path length through benzene = $2 \times n \times d$

d = $\frac{\text{Optical path length through benzene}}{2 \times n}$

= $\frac{\lambda}{2 \times n}$

= $\frac{615 \times 10^{-9}}{2 \times 1.501}$ (as 1 nm = $10^{-9}m$

= 204.9 m

Thus, we can conclude that minimum thickness of benzene is 204.9 m.

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3 years ago

If the density of a 45.0 cm3 block of wood is 0.65 g/ml what is the mass of the wood?

wlad13 [49]

Answer:

$\boxed {\tt mass=29.25 \ grams}$

Explanation:

The density formula is mass over volume.

$d=\frac{m}{v}$

Rearrange the formula for the mass, m. Multiply both sides of the formula by v.

$d*v=\frac{m}{v}*v$

$d*v=m$

Mass can be found by multiplying the density and volume. The density is 0.65 grams per milliliter and the volume is 45.0 cubic centimeters.

A cubic centimeter is equal to a milliliter.

Therefore, 45 cubic centimeters also equals 45 milliliters.

$d= 0.65 \ g/mL\\v= 45 \ mL$

Substitute the values into the formula.

$0.65 \ g/mL * 45 \ mL=m$

Multiply. Note the milliliters, or mL will cancel out.

$0.65 \ g * 45=m$

$29.25 \ g=m$

The mass of the wood is 29.25 grams.

5 0

4 years ago