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melisa1 [442]
3 years ago
10

Hello! I really need help because the test im taking, I failed once already! Im retaking it!

Chemistry
2 answers:
Musya8 [376]3 years ago
8 0

Answer:

Melting point is a intensive property and Intensive properties can be used to help identify a sample because these characteristics do not depend on the amount of sample, nor do they change according to conditions.

Explanation:

Marta_Voda [28]3 years ago
7 0

Answer:

I would say B. melting point but then again all of them are very important exept for state, because even though state is important it only determines if it's a gas liquid or solid! so Mass and volume are Important, but volume also just determines 1 thing, how big it is, so mass or melting point, which mass just tells you how much space it takes up, so I'd say B. Melting point

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I need help on science<br>I have a 89 on my report card for science and I need to get it to a 98
Hunter-Best [27]
Sorry but I only know a few
17- decomposers
18- decomposition
21- 10% is lost so 90%
8 0
4 years ago
Why can't chemical changes be undone? Because of the chemical properties. Because Mark is an idiot. Because they need energy. Be
Volgvan

Answer: Because new substances are formed.

Explanation: A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.  Once a chemical change occurs it cannot be undone due to the change in chemical identity.  The creation of a new substance is not reversible.  

8 0
4 years ago
Which reactant is unlikely to produce the indicated product upon strong heating?
Ilya [14]

2-Methyl-4-oxo-pentanoic acid  is unlikely to produce 2-Methyl-3-butanone upon strong heating.

Upon heating, the β ketoacid becomes unstable and decarboxylates, leading to the formation of the methyl ketone.

A carboxylic acid is an organic acid that contains a carboxyl group (C(=O)OH) attached to an R-group. The general formula of a carboxylic acid is R−COOH or R−CO2H, with R referring to the alkyl, alkenyl, aryl, or other group.

Carboxylic acids occur widely. Important examples include the amino acids and fatty acids. Deprotonation of a carboxylic acid gives a carboxylate anion.

Full question :

Q.  Which reactant is unlikely to produce the indicated product upon strong heating?

  • A) 2,2-Dimethylpropanedioic acid 2-methylpropanoic acid
  • B) 2-Ethylpropanedioic acid Butanoic acid
  • C) 2-Methyl-3-oxo-pentanoic acid 3-Pentanone
  • D) 2-Methyl-4-oxo-pentanoic acid 2-Methyl-3-butanone
  • E) 4-Methyl-3-oxo-heptanoic acid 3-Methyl-2-hexanone

Hence, option (D) is correct.

Learn more about carboxylic acid here : brainly.com/question/26855500

#SPJ4

8 0
2 years ago
Calculate the molar mass of cacl2
kirza4 [7]

Answer:

\boxed {\boxed {\sf 110.98 \ g/mol}}

Explanation:

The molar mass is the mass of a substance in grams per mole.

To find it, add the mass of each element in the compound. These masses can be found on the Periodic Table.

The compound given is:

CaCl_2

The compound has 1 Ca (calcium) and 2 Cl (chlorine).

 

Mass of Calcium

  • The molar mass of calcium is 40.08 g/mol
  • There is only one atom of Calcium in CaCl₂, so the number above is what we will use.

Mass of Chlorine

  • The molar mass of chlorine is 35.45 g/mol
  • There are two atoms of chlorine in CaCl₂, therefore we need to multiply the molar mass by 2.
  • 35.45 * 2= 70.9 g/mol

Molar Mass of CaCl₂

  • Now, to find the molar mass, add the molar mass of 1 calcium and 2 chlorine.
  • 40.08 g/mol + 70.9 g/mol =110.98 g/mol

The molar mass of CaCl₂ is <u>110.98 grams per mole. </u>

6 0
3 years ago
How many neutrons are present in an atom of
Tamiku [17]
There’s going to be 8 neutrons presented
4 0
3 years ago
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