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mash [69]
3 years ago
5

Julio eats a taco for dinner. What represents a physical change in the taco?

Chemistry
2 answers:
Arturiano [62]3 years ago
5 0
B )teeth tearing off a bite of a taco
saw5 [17]3 years ago
4 0

Answer:

c

Explanation:

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Explain why a strong acid must have a weak conjugate base
mojhsa [17]

Explanation:

The specie produced when a strong acid is dissociated in water along with the proton is the conjugate base of that acid.

Consider a strong acid such as HCl which donates the proton so readily as it is a strong base and there is no tendency for conjugate base, which is Cl^- to re accept that proton.  

A strong base is the one which accepts proton and holds it firmly. Thus, the strong acid has weak conjugate base.

4 0
3 years ago
Graphite and diamond are both solid forms of the element carbon. Which statement explains
vlada-n [284]

Answer: C diamond has a different crystal structure from graphite

Explanation:

3 0
3 years ago
Calculate the formula mass of calcium iodate, ca(io3)2, in atomic mass units (amu or u).
VARVARA [1.3K]
<span>389.88094 amu First we look up the atomic mass of all elements contained in calcium iodate using the periodic table: Ca: 40.078 I: 126.90447 O: 15.999 As an intermediate step we calculate the molecular mass of the ion IO3: 126.90447 + 3*15.999 = 174.90147 Then we calculate the mass of one calcium atom and 2 iodate ions: 2*174.90147 + 40.078 = 389.88094 amu</span>
7 0
3 years ago
What is the percent by volume of alcohol, in a solution containing 24 mL of alcohol dissolved in 90 mL of water?
Dmitry [639]

Answer:

use this formula it will help u .

Explanation:

If 60 ml of ethanol is diluted to a final volume of 400 ml, you create a 35 % ethanol solution.

First, realize that you creating a solution with that contains a polar solute (ethanol) with a polar solvent (water). Remember that "like dissolves like."

If you pour 60 ml of ethanol in a volumetric flask, you add 340 ml of water to dilute this solution to a final volume of 400 ml.

Volumetric flasks are designed to make or dilute solutions to specified final volume.

Since you have 60 ml of ethanol in a total solution of 400 ml, the percentage of ethanol is 35 %.

This result is obtained in the following manner.

ml/400. ml. = .35

.35 x 100% = 35 %

3 0
3 years ago
Select all of the characteristics that define matter. A.) Matter has mass. B.)Matter has volume (takes up space). C.)Atoms and c
zysi [14]

Answer:

The answer to your question is: a, b and c

Explanation:

A.) Matter has mass. this option is correct, matter is formed by mass.

B.)Matter has volume (takes up space). this option is correct, matter takes up space.

C.)Atoms and compounds are made out of matter. This option is correct, all atomsand compounds are made out of matter.

D.) All matter has the same density. This optio is wrong, matter of different elements or compounds have different density.

7 0
3 years ago
Read 2 more answers
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