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Neporo4naja [7]
4 years ago
13

4 observations that suggest a chemical change is occurring

Chemistry
1 answer:
Ksju [112]4 years ago
5 0
1. iron 2. gasoline 3. water 4. ice.
You might be interested in
Write the ionization equation for hypochlorous acid, HClO, dissolved in water.
Pavel [41]

Answer:

HClO (l)  →  H⁺ (aq)    +       ClO⁻ (aq)

                 proton   and    hypochlorite.

Explanation:

HClO (Hypochlorous acid)

This is a weak acid that can be dissociated as this:

HClO (l)  →  H⁺ (aq)    +       ClO⁻ (aq)

                 proton   and    hypochlorite.

It is a weak acid, so it can adopt a Ka for its equilibrium

HClO +  H₂O  ⇄   H₃O⁺   +  ClO⁻          Ka

Molar mass = 52.46 g/m

5 0
3 years ago
predict what would happen if two people with equal mass standing on skateboard pushed against each other
cluponka [151]

Answer: They would both be pushed backward. (READ EXPLANATION)

Explanation:

Since your question has an error in it, I will provide two answers. If they were standing on their feet, they would not move. if they're both standing on skateboards, they would both move backwards because they have no friction on the ground. if both of them are standing on the same skateboard and pushing against each other, they would not move.

4 0
3 years ago
What is the molarity of a solution containing 72.9 grams of HCl in enough water to make
Karolina [17]

Answer:

3.9mole/liter

Explanation:

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6 0
3 years ago
Which molecule is shown below
rewona [7]

Answer:

A

Explanation:

You can see the top part looks kinda like methane, and the bottom part looks like hexane.

8 0
3 years ago
Read 2 more answers
How many grams do 3.6 x10^20 atoms of silicon weigh?
creativ13 [48]
First, we divide the number of atoms of silicon given in the problem above by Avogadro's number 6.6022 x10^23. This will give us the number of moles of silicon. Then, we multiply the number of moles by the molar mass of silicon. 
number of moles = (3.6 x 10^20 atoms/6.022x10^23 atoms) = 5.97x10^-4 moles
Then, multiplying by the molar mass
                  (5.97x10^-4 moles)(28.0855 g/mol) = 0.017 grams
4 0
3 years ago
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