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Deffense [45]
4 years ago
5

How does the process of dissolving occur​

Biology
1 answer:
andrew11 [14]4 years ago
7 0
Dissolving is when the solute breaks up from a larger crystal of molecules into much smaller groups or individual molecules. This break up is caused by coming into contact with the solvent. In the case of salt water, the water molecules break off salt molecules from the larger crystal lattice.
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What is the name of the DNA sequence to which RNA polymerase attaches to a gene and assists in transcription initiation? What is
daser333 [38]

Answer:

The promoter

Explanation:

The promoter region is the region of DNA sequence which the RNA polymer binds to to initiate transcription. In the archae and eukaryotes, the core portion of the promoter region is called the TATA BOX. The promoter region is also located upstream of the DNA and can about a 100-1000 base pairs long.

6 0
4 years ago
1. Cooking oil has a mass of 22.75 g and a volume of 25 mL . What is its density ? Show your work .
koban [17]

Answer:

1. 0.91g/ml

2. 0.0503g/cm3

3.0.005cm3

Explanation:

density=m/v

3 0
2 years ago
Why is one side of a single water molecule partially negative while the other side is partially positive?
MatroZZZ [7]
<span>Electrons are not distributed or shared same because of oxyen that is being attracted strongly. Water is a "polar" atom, implying that there is an uneven sharing of electron in its thickness. Water has an incomplete negative charge ( ) close to the oxygen molecule due the unshared sets of electrons, and fractional positive charges ( ) close to the hydrogen particle</span>
5 0
4 years ago
An ideal gas is held in a container of volume V at pressure p. The rms speed of a gas molecule under these conditions is v. If n
yawa3891 [41]

Answer:

d) 2v

Explanation:

Since, root mean square speed of a molecule,

V_{rms}=\sqrt{\frac{3kT}{m}}

Where,

k = Boltzmann constant,

T = temperature of gas,

m = mass of molecule,

Also, the temperature of a gas,

T=\frac{pV}{nR}

Where,

p = pressure of the gas,

V = volume,

n = number of moles of gas,

R = universal gas constant,

\implies V_{rms}=\sqrt{\frac{3kpV}{mnR}}

If V = 2V and p = 2P

Then,

V_{rms}=\sqrt{\frac{12kpV}{mnR}

=2\sqrt{\frac{3kpV}{mnR}

Hence, if rms speed of a gas molecule under initial conditions is v then rms speed of a molecule will be 2v

i.e. option d is correct.

5 0
3 years ago
What is a control in an experiment
erastovalidia [21]
A control is used to establish a baseline in an experiment.




hope it hepls
7 0
3 years ago
Read 2 more answers
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