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katrin2010 [14]
3 years ago
5

The chemical properties of a substance can only be observed when it is changed into a different substance. True or False

Chemistry
2 answers:
kifflom [539]3 years ago
7 0

true. uuuuuuuuuuuuuu

HACTEHA [7]3 years ago
6 0
I am pretty sure that the answer is true
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Draw the Lewis structure for BrCl3. What are the approximate bond angles about the central atom?
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Answer:

Explanation:

BrCl₃ is an interhalogen compound with a hybridization of sp³d. The approximate bond angles can be predicted from the structure (attached below). Although, the lewis structure might be predicted to be trigonal bipyramidal from the structure, it is however a T-shaped geometry because of it's two lone pairs.

Also, from the structure attached, it can be predicted that the approximate bond angles about the central atom is 120° (360 ÷ 3) since each of the three chlorine atoms is equally spaced about the central atom.

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During a medical screening, lung capacity testing is a standard procedure.<br> true or false
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During a medical screening, lung capacity testing is a standard procedure

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What ion does sodium (Na) form
lana [24]
Probably ion with a positive 1 charge.

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4 0
2 years ago
How many molecules in a mole?​
Dennis_Churaev [7]

Answer:

One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's constant.

Explanation:

hope this helped!

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3 years ago
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