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leva [86]
3 years ago
14

Stars were classified first by the strength of the hydrogen lines in their spectra, and then by temperature. Which arrangement o

f stellar types is in order of the strength of their hydrogen lines, from strongest to weakest?
Chemistry
1 answer:
zzz [600]3 years ago
3 0

sorry, don't know

sorry, don't know

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g 10.00 mL of phosphoric acid (H3PO4) are titrated with 0.1000 M sodium hydroxide. 15.00 mL of the sodium hydroxide solution are
aliya0001 [1]

<u>Answer:</u> The molarity of phosphoric acid is 0.05 M

<u>Explanation:</u>

A neutralization reaction is defined as the reaction in which an acid reacts with a base to form a salt and water molecule.

At equivalence, moles of acid becomes equal to the moles of base. The equation for the neutralization follows:

n_1M_1V_1=n_2M_2V_2              ........(1)

where,

n_1, M_1\text{ and }V_1 are the n-factor, molarity and volume of acid that is H_3PO_4

n_2, M_2\text{ and }V_2 are the n-factor, molarity and volume of the base that is NaOH

Given values:

n_1=3\\M_1=?M\\V_1=10.00mL\\n_2=1\\M_2=0.1000M\\V_2=15.00mL

Plugging values in equation 1:

3\times M_1\times 10.00=1\times 0.1000\times 15.00\\\\M_1=\frac{1\times 0.1000\times 15.00}{3\times 10.00}\\\\M_1=0.05M

Hence, the molarity of phosphoric acid is 0.05 M

6 0
3 years ago
Bases can ________. release only hydrogen ions take up only hydrogen ions release only hydroxide ions both take up hydrogen ions
Lapatulllka [165]
<span>Bases can both take up hydrogen ions and release hydroxide ions. This differs from an acid, which releases a hydrogen ion. Combining acids and bases can produce a lot of heat during the reaction. If the acid and base are of the same strength, the mixture will be neutralized.</span>
4 0
3 years ago
Read 2 more answers
1. What is the relationship between base pairs A, C, T, and G in determining an individual's
tensa zangetsu [6.8K]

Answer:

The base pairs are what makes up an individual's genes.

Check below for further explanation.

Explanation:

The base pairs A, C, T and G are the basic molecules which makes is the DNA of individual.

The genes of an individual which determines the phenotypical expressions found in an individual such as eye colour, height, etc, are functional units found in the DNA.

Therefore, the arrangement of the base pairs determines the gene present in an individual and thus, the individual's phenotype.

3 0
3 years ago
Which layer of the atmosphere is chemically stratified, with the lightest molecules riding above heavier molecules?
MA_775_DIABLO [31]
That would be the stratosphere  , hope i helped :)
6 0
4 years ago
Which one of the following solutions has The (((lowest )))PH value?
marissa [1.9K]

Answer:

a

Explanation:

because I said so and I think it's right

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