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monitta
3 years ago
15

Questions Answer all please

Chemistry
1 answer:
dybincka [34]3 years ago
6 0

Answer:

Both,

Both,

Vertical

Explanation:

When you push a lawn mower, you can be moving up and down or across, when your pushing a wheel barrel you can do the same, when you do a push up your going up and down which is vertical.

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Decide which element probably forms a compound with chlorine that has a chemical formula most and least similar to the chemical
valentinak56 [21]

Answer:

phosphorus - least similar to barium

beryllium - most similar to barium

Explanation:

The formula of the chloride formed between barium and chlorine is BaCl2.

Barium is a metallic element and has the valency of +2. Beryllium is also a group two metal with a valency of +2. Hence the compound formed between beryllium and chlorine is BeCl2

Phosphorus is a nonmetal and forms a completely different chloride from BaCl2. The chloride of phosphorus is PCl5 and PCl3. These are least similar to BaCl2

6 0
3 years ago
For the chemical equations shown below, label each reactant as either acid or base, and each product as either conjugate acid or
Veronika [31]
Acids are ionic compounds with hydrogen at the front. Bases are ionic compounds with hydroxide at three back(bronsted definition)
A conjugate acid is a base that has gained a proton(hydrogen ion) and a conjugate base is formed when an acid has given up its proton.
8 0
3 years ago
Can somepne help i'll give brainliest............
Igoryamba
Answer: Carbon dioxide made of carbon and oxygen.

This is because compounds are the combination of two atoms from different elements (carbon and oxygen). Hope this helps :)
4 0
3 years ago
12 - 13 if you can, that would be appreciated
RideAnS [48]
12: B, since it said the temperature is below 3,500
7 0
3 years ago
How many moles are in a 12.0 g sample of NiC12
Nady [450]

Answer:

0.17 moles

Explanation:

In the elements of the periodic table, the atomic mass = molar mass. <u>Ex:</u> Atomic mass of Carbon is 12.01 amu which means molar mass of Carbon is also 12.01g/mol.

In order to find the # of moles in a 12 g sample of NiC-12, we will need to multiply the number of each atom by its molar mass and then add the masses of both Nickel and C-12 found in the periodic table:

  • Molar Mass of Ni (Nickel): 58.69 g/mol
  • Molar Mass of C (Carbon): 12.01 g/mol

Since there's just one atom of both Carbon and Nickel, we just add up the masses to find the molar mass of the whole compound of NiC-12.

  • 58.69 g/mol of Nickel + 12.01 g/mol of Carbon = 70.7 g/mol of NiC-12

There's 12g of NiC-12, which is less than the molar mass of NiC-12, so the number of moles should be less than 1. In order to find the # of moles in NiC-12, we need to do some dimensional analysis:

  • 12g NiC-12 (1 mol of NiC-12/70.7g NiC-12) = 0.17 mol of NiC-12
  • The grams cancel, leaving us with moles of NiC-12, so the answer is 0.17 moles of NiC-12 in a 12 g sample.

<em>P.S. C-12 or C12 just means that the Carbon atom has an atomic mass of 12amu and a molar mass of 12g/mol, or just regular carbon.</em>

5 0
3 years ago
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