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mihalych1998 [28]
2 years ago
7

0. 01 M HCl solution has a pH of 2. Suppose that during the experiment, both the universal pH indicator and the cabbage indicato

r turn orange-red for 0. 01 M HCl. What can you conclude about the the cabbage indicator key? It matches the universal pH indicator and is indicating the proper pH. It should completely match the universal indicator key for all pH values greater than 7 (base). It should completely match the universal indicator key for all pH values. There was some sort of experimental error, because the indicators should never match.
Chemistry
2 answers:
frosja888 [35]2 years ago
6 0

Answer:

Explanation:

An object is thrown vertically from the ground upwards with a speed of 10 m/s. Considering g = 10 m/s2, the maximum height that the object reaches from the ground, in meters, will be:

a) 15.0.

b) 10.0.

c) 5.0.

d) 1.0.

e) 0.5.

8090 [49]2 years ago
5 0

Answer:

a.) It matches the universal pH indicator and is indicating the proper pH.

Explanation:

it says its the answer.

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Assume you mixed 5 µl of your cod fish homogenate with 195 µl working solution. The fluorometer displays a measurement of 12.2 µ
11111nata11111 [884]

Answer:

Hallo

Explanation:

I took that question

3 0
3 years ago
Which of the following is not included in John Dalton's modern theory of the atom?
Akimi4 [234]

The answer for the following question is option "C".

Option C is not included in the John Dalton's modern theory of an atom.

  • "It states atoms of different elements combine to form new compound" but not new elements

Explanation:

According to John's Dalton's modern theory of an atom:

1. All matter is composed of atoms.

2. Atoms cannot be created,destroyed or subdivided in the ordinary chemical reactions.

3. Atoms of one element differ in the properties from atoms of an another element.

(i.e.)Each and every atom of the element has its own unique properties of their own.

4. Atoms of one  element combine with the atoms of another element to <u>form new compound.</u>

5. Atoms that make up an element are identical to each other.

7 0
3 years ago
Which of the following combinations of particles represents an ion of net charge -1 and of mass number 82? Group of answer choic
noname [10]

Answer:

The correct choice is E (47 neutrons, 35 protons, 36 electrons)

Explanation:

A ion of net charge -1 means that the ion wins an e-.

We dismiss options B and C.

We also dismiss option A because neutrons + protons = 81.

neutrons + protons = mass number

So we have E and C.

We see that C has 47 neutrons, 36 protons and 36 electrons and, as the atomic number matches the number of protons, we find out on the Periodic Table that the atomic number 36 represents to Krypton, a noble gas. It is impossible! A noble gas never can't be a ion of net charge.

Option E is correct, It is an isotope of Br.

Br has 35 protons (its atomic number)

47 neutrons, that's why it is an Isotope (Br has always 45 neutrons)

As usual, Br has 35 electrons, if it represents a ion of net charge -1, it menas it won 1 e-.  

5 0
3 years ago
If HCr2O7 is titrated with Ca(OH)2, what is the balanced chemical equation of this neutralization reaction?
Harrizon [31]

Answer:

2HCr2O7(aq) + Ca(OH)2(aq) --> 2H2O(l) + Ca(Cr2O7)2

Explanation:

A neutralization reaction produces water and a salt. Since Ca(OH)2 has two hydroxides, two water molecules are produced, which means you also need two molecules of the acid. Having two molecules of the acid also ensures that you have two dichromates on both sides.

6 0
3 years ago
Will mark Brainliest.
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4 0
3 years ago
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