3 years ago

Unknown # 41

Chemistry

1 answer:

sveta [45]3 years ago

4 0

Answer:

Explanation:

From the question, we can see that a qualitative analysis of the compound shows that it has a lilac flame colour. The lilac flame colour corresponds to the potassium ion (K^+).

Again, the test of addition of HNO3(aq) and AgNO3(aq) to a solution is a test for halogens. If the result is a green precipitate, then the ion present is the iodide ion (I^-).

Hence, the compound must be KI.

You might be interested in

When adding the measurements 42.1014 g + 190.5 g, the answer has ___ significant figures.

andrezito [222]

Answer: The answer has 7 significant figures

Explanation:

The addition of 190.5 and 42.1014 will give 232.6014. Counting the digits will give 7 significant figures.

4 0

4 years ago

How many moles of hydrogen molecules (h2) are present in 9 x 1023 molecules of hydrogen?

Marta_Voda [28]

Hello

So the molar mass of a Hydrogen molecule is 2. If you have 10 grams of Hydrogen molecules, you have 5 moles<span> of Hydrogen molecules (10 moles of Hydrogen atoms). Avogadro's number is 6.0225x10^23. This means that </span>one mole<span> of a substance has that many particles.
</span>
Have a nice day

7 0

3 years ago

Read 2 more answers

There is no connection between the study of chemistry and physics. A. true B. false

9966 [12]

B. False, have a connection between chemistry and physis

4 0

3 years ago

Part c how long does it take to raise the temperature of the air in a good-sized living room (3.00m×5.00m×8.00m) by 10.0∘c? note

postnew [5]

Do you have any multiple choices

4 0