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Brums [2.3K]
3 years ago
8

Which of the following molecules/ions has a pyramid shape?

Chemistry
1 answer:
andreev551 [17]3 years ago
3 0
i think its a right tringle
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How would a bohr model of a neon atom differ from the model of nitrogen?
natita [175]

Explanation:

The Bohr hypothesis shows that an atom has an circular orbit of electrons outside the nucleus in a revolving orbit. In Bohr model for Nitrogen there are two orbits s and p. The s has two electron and p has five. Whereas in Bohr neon model there are also orbital s, and p.. The s orbital has 2 electron and the p orbital has 8 electron in it.

4 0
3 years ago
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He table shows the percentages of hydrocarbons that are found in a sample of crude oil.
Flura [38]

Answer is: a mixture.

Crude oil is mixture (solution) consist of several different hydrocarbons (alkanes, alkenes...). This hydroalkanes can be separated from mixture (crude oil) using distilation (usually fractional distillation), because they have different boiling points.  

Proportion of hydrocarbons is diiferent in varios parts of the world.

Solution is homogeneous mixture composed of two or more substances.  

3 0
3 years ago
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What functional group consists of a carbon atom double-bonded to an oxygen atom?
DaniilM [7]

Answer:

The answer to your question is: letter B.

Explanation:

Carbon atom double-bonded to an oxygen atom    C= O,

a) Carbohydrate group   this group does not exist

b)Carbonyl group  This option is right, carbonyl group is C=O

c) Hydroxyl group  This option is incorrect, hydroxyl group is OH, very different from C=O

d) Ketone group Ketone group does not exist, ketones have the same functional group as aldehydes (C=O)

7 0
3 years ago
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What is the mass of 0.25 moles of water? O 0.25 g 4.5 g 18 g 72g
Dahasolnce [82]

Answer:

4.5 g

Explanation:

The mass of 1 mol of water is 18.02 g.

\text{Mass of H$_{2}$O} = \text{0.25 mol H$_{2}$O} \times \dfrac{\text{18.02 g H$_{2}$O}}{\text{1 mol H$_{2}$O}} = \textbf{4.5 g H$_{2}$O}

5 0
3 years ago
Name three pyical features for the sun
torisob [31]
Size

The Sun is 1,390,000 km in diameter. That compares with 12,756 km for diameter of the Earth. In other words, the diameter of the Sun is over 100 times the diameter of the Earth.

In June, 2004, Venus passed in front of the Sun, as seen from the Earth. Since the diameter of Venus is only slightly less than that of Earth (12,104 km)

Mass

The mass of the Sun is about 2 x 1030 kilograms (2 followed by 30 zeros). It is one of the larger stars in our Milky Way galaxy. The median size of stars in our galaxy is less than half the mass of the Sun. In comparison, the Earth is 6 x 1024 kg. This means that the mass of the Sun is over 300,000 times greater than that of the Earth.



other than its Big,Orangish-yellowish, round like a ball, and extremly hot

5 0
3 years ago
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