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pishuonlain [190]
3 years ago
7

3. What is the density of a 100 grams (g) box that displaces 20 mL of water?

Chemistry
1 answer:
Zolol [24]3 years ago
8 0

Answer: the density is 997 kg

Explanation:

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2. calcium reacts with oxygen to produce calcium oxide what is the :reactant' :products' and chemical equation" of this problem
earnstyle [38]

Answer:

Calcium reacts with Oxygen to form Calcium Oxide

Explanation:

Reactant: Calcium reacts with Oxygen to form Calcium Oxide

Products: Calcium + Oxygen

Chemical equation: Ca + 02> CaO

3 0
2 years ago
A chemist mixes 1.00 g CuCl2 with an excess of (NH4)2HPO4 in dilute aqueous solution . He measures the evolution of 670 J of hea
kaheart [24]

Answer:

\Delta H will be 90054 J

Explanation:

Number of moles = (mass)/(molar mass)

Molar mass of CuCl_{2} = 134.45 g/mol

So, 1.00 g of CuCl_{2} = \frac{1.00}{134.45}mol of CuCl_{2} = 0.00744 mol of CuCl_{2}

0.00744 mol of CuCl_{2} produces 670 J of heat

So, 1 mol of CuCl_{2} produces \frac{670}{0.00744}J of heat or 90054 J of heat

4 0
3 years ago
Is rubbing alcohol a mixture, compound or solutions?
Aliun [14]
Rubbing alcohol is a solution
5 0
3 years ago
A 0.229-g sample of an unknown monoprotic acid is titrated with 0.112 m naoh. the resulting titration curve is shown here. part
Kazeer [188]
It would be 0.341 because if you add 0.229 and 0.112 it will be 0.341
4 0
3 years ago
What product(s) would be formed when these are the reactants? C5H12 + O2 (limited)
damaskus [11]

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Carbon dioxide and water I believe because it is a combustion reaction

7 0
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