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2 years ago

If an element has an atomic number of 35 and an atomic mass of 84, how many protons does this element have?

Chemistry

1 answer:

vfiekz [6]2 years ago

7 0

Answer:

Explanation:

because the atomic number is the same as the protons number

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An unknown substance has the following properties:

Anastasy [175]

Answer:

Homogenous mixture

Explanation:

Homogenous mixtures like ice cream appear to be uniform, and you cannot see their individual components.

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2 years ago

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Listed below are sets of elements.

Anna11 [10]

The correct answer is B) Chlorine, Sulfur, and Silicon

I'm 100% sure this is correct

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3 years ago

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How many grams are in 1 mole of Ar?

Ilia_Sergeevich [38]

Answer: 39.948 grams

Explanation:

The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Ar, or 39.948 grams

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2 years ago

The carbon cycle does not really involve matter. True False

stiks02 [169]

False everything involves matter

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2 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.

4 0

2 years ago