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ladessa [460]
4 years ago
14

What is the acceleration of the object’s motion? 0.5 m/s2 -0.5 m/s2 2 m/s2 -2 m/s2

Chemistry
1 answer:
djverab [1.8K]4 years ago
5 0

Answer:  -2m/s2

Explanation:

Using the following equation ; acceleration = Change in velocity / time

i.e  a =  v - u / t

where  'a'  = acceleration

              v  = final velocity

              u  =  initial velocity

              t   =  time

Therefore;  from the graph we have acceleration to be, 0 - 6m/s / 3s  = -2m/s2

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riadik2000 [5.3K]

Answer:

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3 0
3 years ago
Determine the amino acid sequence of a polypeptide from the following data:
svlad2 [7]

Solution :

1. It is given that when Edman's reagent is used, it releases PTH-Glycin. The degradation of Edmans is used for the amino acids to sequencing of the peptide/protein and is also removes N terminal amino acid and thus gives us the PTH amino acid product.

Therefore, the first amino acid is Glycine.

2. The Carboxypeptidase A releases the C terminal amino acid, and therefore the last amino acid is Phe.

3. The Cyanogen Bromide helps to chop after the Med residue, therefore the sequence is 1 - 2 - 3 or 2 - 1 - 3.

4. The trysin chops after the basic amino acid - Arg and the Lys unless followed by Proline and so the sequence of the peptide is 1 - 2 - 3 4.

7 0
3 years ago
If a substance increases the OH- concentration of pure water by 10^4. what is the pH of the solution?
soldi70 [24.7K]

Answer:

pH = 11

Explanation:

The concentration of OH⁻ in <em>pure water</em> is 10⁻⁷ M. If a substance increases OH⁻ concentration by 10⁴, the new concentration will be:

[OH⁻] = 10⁴ x 10⁻⁷ M = 10⁻³M

We can calculate pOH using it's definition:

pOH = -log[OH⁻] = -log (10⁻³) = 3

Then, we can find out pH using the following relation:

pH + pOH = 14

pH = 14 - pOH = 14 -3 = 11

Since pH = 11 is higher than 7, we can confirm that the substance is a base.

5 0
3 years ago
A ___________________________ is a mixture in which the properties of thesubstances are spread evenly.
wel

Answer:

homogenous mixture

Explanation:

6 0
3 years ago
Please help, and answer as much as you can. ​
n200080 [17]

Answer:

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Explanation:

A: Refinery gas

B: Gasoline fraction

C: Naphtha

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