3 years ago

Ok help it’s for homework

Chemistry

2 answers:

never [62]3 years ago

4 0

Ability to moderate temperatures is not a property of water

cricket20 [7]3 years ago

4 0

Answer:

C. ability to contract upon freezing

Explanation:

Water can regulate temperatures, it can adhere to other substances via adhesion, and it is called the universal solvent because it can dissolve many types of substances.

When water freezes, it actually expands due to the lattice structure it assumes. In ice, there are more secure bonds that maintain the structure.

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a company has designed a new product and tested the porotype which is the next step in product development

Masja [62]

I’d say market and distribution would be the next step

6 0

3 years ago

A solution is prepared at that is initially in benzoic acid , a weak acid with , and in sodium benzoate . Calculate the pH of th

Kisachek [45]

Answer:

$pH=4.1$

Explanation:

Hello,

In this case, for a concentration of 0.42 M of benzoic acid whose Ka is 6.3x10⁻⁵ in 0.33 M sodium benzoate, we use the Henderson-Hasselbach equation to compute the required pH:

$pH=pKa+log(\frac{[base]}{[acid]} )$

Whereas the concentration of the base is 0.33 M and the concentration of the acid is 0.42 M, thereby, we obtain:

$pH=-log(Ka)+log(\frac{[base]}{[acid]} )\\\\pH=-log(6.3x10^{-5})+log(\frac{0.33M}{0.42M} )\\\\pH=4.1$

Regards.

3 0

3 years ago

In each of the following blanks, only enter a numerical value.

tatiyna

Answer:

1) 1,... 2

2) 18

3) n= 3 and I=1

Explanation:

1) when l= 0, its an s-sub-level, and only 1 orbital is possible which can carry only 2-electrons

2) the maximum number of electron is given by 2n^2= 2×3^2= 18

3) in 3p, the coefficient of p is the value of n= 3 and l-value of P is 1

5 0

3 years ago

A. Convert the following Fahrenheit temperatures to Celsius (you may use a calculator):

Bezzdna [24]

37C
20C
-6.67C
50F
86F
-40F

4 0

3 years ago

On a graph showing distance versus time, a horizontal line represents an object that is

riadik2000 [5.3K]

Answer:

the anwser is; B: increasing its speed

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3 years ago