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AlladinOne [14]
2 years ago
15

If u answer this correctly I’ll mark you brainliest

Chemistry
2 answers:
olga2289 [7]2 years ago
4 0

Answer:

6 is the right answer I know cause I like science

erma4kov [3.2K]2 years ago
4 0

Answer:

<h2>There are 6 of these molecules. H2O is a molecule made of H for hydrogen and O for oxygen. There are 12 of these molecules. The smaller number is the number of atoms of the element to the left of it.</h2>

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How would you measure the pH of a coloured substance such as red ink.why?
earnstyle [38]
There are 3 possible ways of determining pH.
1. A pH meter, 2. Litmus paper/ pH test strips or 3. Titrations. 

1. A pH meter works by sending a small electric current through the solution. An electrical current can only be created if there are free-moving particles such as H+ ions from an acid or OH- ions from a base. The pH meter can determine the pH by how high the conductivity is. 

2. Litmus Paper or pH test strips are strips that turn a specific colour under a specific pH. This colour can then be compared to a colour chart which will tell you the pH. The downfall of this method is that the red ink will stain the strip and you will be unable to get an accurate reading. 

3. A titration is the best method, if done properly, for determining pH. 
4 0
3 years ago
Which geological feature is caused mainly by glacial erosion? O A. geyser O B. fault line O c. lava flow O D. U-shaped valley​
Kamila [148]

Answer:

i think it is C

Explanation: hope this helps :)

6 0
3 years ago
Read 2 more answers
Write down your understanding of plate tectonics.
anygoal [31]

Answer:

The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.

Explanation:

5 0
2 years ago
What mass, in grams, of sodium sulfate is needed to make 230.5 g of a 3.5 % (m/m) aqueous solution of sodium sulfate?
andreev551 [17]

The percent concentration of a solution can be calculated from; mass of solute /mass of solution * 100. The mass of the solute here is 8.1 g.

<h3>What is concentration?</h3>

The term concentration refers to the amount of solute presnt in a solution. There are many ways of expressing concentration such as molarity, molality and percentage.

Here;

mass of solution = 230.5 g

Percent of solute =  3.5 %

3.5 = x/ 230.5 * 100

3.5 = 100x/230.5

230.5(3.5) = 100x

x = 230.5(3.5) /100

x = 8.1 g

Learn more about percent concentration: brainly.com/question/202460?

7 0
1 year ago
HELP ASAP
Ghella [55]

potassium reacts the most vigorously.

7 0
3 years ago
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