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padilas [110]
3 years ago
9

7. Elements in group one are called.​

Chemistry
1 answer:
Aleks [24]3 years ago
3 0

Answer:

The answer is alkali metals

Explanation:

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In a Lewis structure for carbon tetrachloride (CCl4), which of the following is the central atom?
Sonbull [250]
Carbon is the answer it is the main molecule in the atom
3 0
3 years ago
HELP ME PLEASE WILL GIVE MORE POINTS AND BRAINLIEST!!
Sedbober [7]

✅Show work regardless if student got answer  correct or incorrect

q = mC∆T

q = (30.0g)(0.900J/goC)(50oC)

q = 1350 J

So, the right answer is 1350 J

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7 0
3 years ago
A scientist has two samples of gas: The first sample contains one mole of argon atoms and has a mass of 39.948 g; the second sam
V125BC [204]

There are 6.022 × 10²³ atoms in 39.948 g of argon and 4.0026 g of helium.

Explanation:

39.945 g/mole is the molar mass of argon so 39.948 g of argon are equal to 1 mole of argon.

4.0026 g/mole is the molar mass of helium so 4.0026 g of helium are equal to 1 mole of helium.

We know that Avogadro's number tell us the number of particles in 1 mole of substance which is 6.022 × 10²³.

So in 39.948 g of argon and 4.0026 g of helium contains the same number of atoms, 6.022 × 10²³.

Learn more about:

Avogadro's number

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4 0
3 years ago
A molecular orbital that decreases the electron density between two nuclei is said to be ____.
nikklg [1K]

A molecular orbital that decreases the electron density between two nuclei is said to be <u>antibonding.</u>

The bonding orbital, which would be more stable and encourages the bonding of the two H atoms into H_{2}, is the orbital that is located in a less energetic state than just the electron shells of the separate atoms. The antibonding orbital, which has higher energy but is less stable, resists bonding when it is occupied.

An asterisk (sigma*) is placed next to the corresponding kind of molecular orbital to indicate an antibonding orbital. The antibonding orbital known as * would be connected to sigma orbitals, as well as antibonding pi orbitals are known as \pi* orbitals.

Therefore,  molecular orbital that decreases the electron density between two nuclei is said to be <u>antibonding.</u>

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Hence, the correct answer will be option (b)

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To know more about molecular orbital

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6 0
2 years ago
This investigation is a controlled experiment, so you can change only one variable at a time. Which reactant do you think Koby s
WINSTONCH [101]

Answer:

The baking soda

Explanation:

This is the more reactive part of the experiment. The more baking soda there is (compared to the vinegar), the stronger the reaction.

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