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Law Incorporation [45]

4 years ago

6

Which statement about electric force is true?

2 answers:

umka21 [38]4 years ago

7 0

C option is correct .

UkoKoshka [18]4 years ago

6 0

your answer is B) hope this helps

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help please. In 1961 the mlar atomic mass of carbon 12 was defined to be exactly 12g/mol (a value agreed upon by chemists and ph

Ne4ueva [31]

The first notion of the number of molecules per atom <span>was calculated by Josef Loschmidt which he endeavored to complete in 1895. In his experiment, he determined the number of molecules in one cubic centimeter of gas under STP. this is equal to approx 2.6 x 10^19 molecules. The former is called "Loschmidt's Constant" instead.</span>

4 0

3 years ago

What is the lewis structure of the covalent compound that contains one nitrogen atom

mario62 [17]

Full Question:

What is the Lewis structure of the covalent compound that contains one nitrogen atom, one hydrogen atom, and one carbon atom?

Explanation:

This covalent compound is the hydrogen cyanide, HCN.

The following steps are used to obtain it;

Step 1. Draw a skeleton structure of the compound based on the elements

Put the least electronegative atom C in the middle with H and Cl on either side.

H-C-N

Step 2. Count the valence (outermost) electrons you can use

H + C + N = 1 + 4 + 5 = 10

Step 3. Add these electrons to give every atom an octet

You have to put a triple bond between C and N.

Note: Each bond is made up of two electrons.

The lewis structure is given in the image below;

3 0

3 years ago

Mrs. Jensen drives her car from New York to Town X, a distance of 437 km. The trip takes 7.27 hours. To calculate the average ve

lukranit [14]

Velocity always has to include direction <span />

8 0

3 years ago

Read 2 more answers

Cynthia pushes a ball with a horizontal speed of 6.50 m/s off a bench with a height of

Igoryamba

The answer is a because if you look really close

7 0

3 years ago

Sometimes a person cannot clearly see objects close up or far away. To correct this type of vision, bifocals are often used. The

Tanzania [10]

Answer:

Top Half power is

$P_{top} = -0.58 dioptre$

Bottom half power

$P_{bottom} = +1.06 dioptre$

Explanation:

For the top part of the lens we need a focal length of the lens in which person can see upto a large distance

so here we have

$d_i = -171 cm$

$d_o = infinite$

now by lens formula

$\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}$

now we have

$f = d_i = -171 cm$

now power of top part of the lens is given as

$P = \frac{1}{f} = -0.58 Dioptre$

Now for the bottom half we can say

$d_o = 25 cm$

$d_i = -34 cm$

now by lens formula

$\frac{1}{25} - \frac{1}{34} = \frac{1}{f}$

$f = 94.4 cm$

$P = \frac{1}{f} = 1.06 Dioptre$

3 0

3 years ago