All categories

2 years ago

Help!!! I will give brainliest!!!!! Picture below

Chemistry

1 answer:

Feliz [49]2 years ago

7 0

Answer:

Explanation:

A. yes

B. they cut down trees

C. the rainforest would be better

Get helped

You might be interested in

How many molecules are found in 90 grams of Al(OH)3?

jarptica [38.1K]

Answer:

6.95 x 10²³ molecules/particles

Explanation:

First we need to find the total Empirical Mass. We can find this by adding each element's mass together.

Al = 26.982,

O = 15.999

H = 1.008

26.982 + 3(15.999) + 3(1.008) = 78.003.

Now we divide by the mass given (90 grams).

90/78.003 = 1.153801777.

We then take that number and multiply it by avogadro's number (6.022 x 10²³)

1.153801777 x avogadro's number = 6.95 x 10²³

6 0

3 years ago

PLEASE ANSWER aisksiwjjskssjjssjsjsjsjsj

Gnesinka [82]

Answer:

The answer will be A

Explanation:

I will send a photo with it

4 0

2 years ago

How to solve x² in differential

g100num [7]

Answer:

x² = mutiphy by them self

Explanation:

4 0

3 years ago

The indicator methyl red has different molecular structures at high and low pH.

Novosadov [1.4K]

Answer:

a. True

Explanation:

Methyl red is an indicator widely used in quality control of oxides as Zinc oxide in the titration with sulfuric acid.

As is used in titrations of acid-base reactions the indicator change in colour. Is red when the pH < 4.4 (Acidic Solutions) and is yellow when pH > 6.2 (Neutral-Basic solutions).

A change in colour means the structure of the indicator is changing with pH. Thus, the answer is:

6 0

3 years ago

How do you solve this ??

kotegsom [21]

Answer : Option A) 2.00 eV

Explanation : The conversion of J to eV is done with the following formula;

$E_{eV} = E_{J} X (6.241 X 10^{18})$

Here, we have the value of particle in terms of Joules which is 3.2 X $10^{-19}$

So, on substituting we get,
$E_{eV}$ = 3.2 X $10^{-19}$ X $(6.241 X 10^{18} )$

$E_{eV}$ = 1.99 eV so, it can be rounded off to 2.00 eV.

3 0

3 years ago