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3 years ago

9

Element X is a solid that is brittle, lacks luster,and has six valence electrons. In which group on the Periodic Table would ele

ment X be found

1 answer:

erastova [34]3 years ago

4 0

Answer:

Sulfur?

Explanation:

Sulfur has 6 valence electrons and does not have luster.

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Glycerine is viscous than water?why

Sloan [31]

Answer:

Yes

Explanation:

Why is glycerol more viscous than water?

The glycerine is more viscous than water because due to presence of hydrogen atoms , we all know that glycerine has more hydrogen bonding than water molecule , which makes an aggregation which means that glycerine is more viscous than water , in simple words glycerine can't flow as that of water molecule.

7 0

3 years ago

What is the energy in joules of one photon of<br> microwaveradiation with a wavelength 0.122m?

pentagon [3]

<u>Answer:</u> The energy of photon is $162.93\times 10^{-26}J$

<u>Explanation:</u>

The relation between energy and wavelength of light is given by Planck's equation, which is:

$E=\frac{hc}{\lambda}$

where,

E = energy of the light = ?

h = Planck's constant = $6.626\times 10^{-34}Js$

c = speed of light = $3\times 10^8m/s$

$\lambda$ = wavelength of photon = 0.122 m

Putting values in above equation, we get:

$E=\frac{(6.626\times 10^{-34}Js)\times (3\times 10^8m/s)}{0.122m}\\\\E=162.93\times 10^{-26}J$

Hence, the energy of photon is $162.93\times 10^{-26}J$

3 0

3 years ago

Convert 7.1x10^25 molecules of water to moles

ruslelena [56]

Answer:

<h2>117.94 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{7.1 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 117.940199...$

We have the final answer as

<h3>117.94 moles</h3>

Hope this helps you

8 0

3 years ago

An example of a substance that can be decomposed by a chemical change is:

Savatey [412]

The answer is iron..

7 0

4 years ago

Read 2 more answers

identify A and B, isomers of molecular formula C3H4Cl2, from the given 1H NMR data: Compound A exhibits peaks at 1.75 (doublet,

siniylev [52]

Answer:

See explaination

Explanation:

please kindly see attachment for the step by step solution of the given problem.

3 0

3 years ago