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yanalaym [24]
3 years ago
10

Which of the following would be considered a compound? He CI NaCl B

Chemistry
1 answer:
kobusy [5.1K]3 years ago
5 0

Answer:

NaCl

Explanation:

because He which is helium gas its an element alone,

Cl which is chlorine is a single element,

B which is Boron and its a single element,

but NaCl which is simply called table sugar is the combination between Na, sodium and Cl, chlorine , so its called a compound not an element.

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(NEED HELP IMMEDIATELY) In a gene, which base sequence codes for two amino acids?
Leni [432]

Answer:

\boxed {\boxed {\sf 3. \ GAGCTC}}

Explanation:

Amino acids are the monomers or building blocks of protein. Proteins are created during protein synthesis according to the genetic information or DNA in an organism.

The DNA is translated to messenger RNA in the nucleus. It travels to the ribosome. There, the mRNA is "read off" in threes. <u>Three nucleotides</u> make up  a <u>codon.</u> Transfer RNA with the corresponding anticodon and an amino acid attaches to the codon and a chain of amino acid forms.

If 3 nucleotides make 1 codon which makes 1 amino acid, then we need double that or 6 nucleotides to make 2 amino acids.

The only answer choice with 6 nucleotides is <u>Choice 3: GAGCTC</u>

3 0
3 years ago
Ethylene glycol (antifreeze) has a density of 1.11 g/cm3. What is the mass in grams of 387 mL of ethylene glycol?
olga2289 [7]
Cm^3 = mL

1.11 g/cm^3 = 1.11 g/mL

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6 0
3 years ago
How many protons and neutrons does br-1 have
Anvisha [2.4K]
35 protons 35 electrons and 45 nutrons
5 0
4 years ago
Which sequence correctly ranks elements from largest to smallest atomic radius?
Taya2010 [7]

Answer:

\A.

Explanation: Bromine and arsenic have the same atomic radius, which is 115 and Potassium has an atomic radius of 220.

8 0
3 years ago
A student jumps of a sled toward the west after it stops at the bottom of an icy hill. Based on the law of action-reaction, in w
Delicious77 [7]

Answer:

East

Explanation:

Given Newton's third law of motion; "Action and reaction are equal and opposite", when a student jumps off a sled toward the west after it stops at the bottom of an icy hill, the sled will move in the East direction.

This is because, the force exerted on the sled is a reaction force and is opposite in direction to the force that thrusts the boy westward though equal in magnitude with the former.

3 0
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