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lawyer [7]
3 years ago
15

Definition of matter​

Chemistry
2 answers:
Contact [7]3 years ago
4 0

Answer:

Any thing that occupied volume and mass in air is known as matter

xeze [42]3 years ago
3 0

Answer: anything that has mass and volume

Explanation: Matter is anything that has mass and takes up space

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1. El sorbitol, utilizado como edulcorante en algunos alimentos "sin azúcar" tiene un peso molecular de 182 g/mol y una composic
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3 years ago
1) a solution with a hyrdrogen ion concentration of 1x10^-4 moles/liter would have a PH of what?
lana66690 [7]

Answer:

pH = -log(concentration of hydro.gen ion)

1. When con. of H ion is 1*10-4 mol/L

pH = -log(1*10-4) = -(-4) = 4

2. A solution with a pH of 1*10-12mol/L

pH = -log (1*10-12) = -(-12) = 12

The pH is 12 and the solution is basic or alkaline

3.A solution with a pH of 6 has the concentration of

pH = -log (H+)

(H+) = arc log -pH

(H+) = 1*10-6

Explanation:

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3 years ago
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4 0
3 years ago
Read 2 more answers
Which one of the following is a pure substance? 1.milk2. Concrete3. Wood 4. Salt water5. Elemental copper
Sauron [17]
Elemental copper would be a pure substance.
5 0
3 years ago
Based on the following thermodynamic data, calculate the boiling point of ethanol in degrees Celsius. Substance ΔH∘f (kJ/mol) S∘
levacccp [35]

Answer:

76.03 °C.

Explanation:

Equation:

C2H5OH(l) --> C2H5OH(g)

ΔHvaporization = ΔH(products) - ΔH (reactants)

= (-235.1 kJ/mol) - (-277.7 kK/mol)

= 42.6 kJ/mol.

ΔSvaporization = ΔS(products) - ΔS(reactants)

= 282.6 J/K.mol - 160.6 J/K.mol

= 122 J/K.mol

= 0.122 kJ/K.mol

Using gibbs free energy equation,

ΔG = ΔH - TΔS

ΔG = 0,

T = ΔH/ΔS

T = 42.6/0.122

= 349.18 K.

Coverting Kelvin to °C,

= 349.18 - 273.15

= 76.03 °C.

8 0
2 years ago
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