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aliya0001 [1]
3 years ago
7

Newbie Here pls.. HELP me​

Chemistry
1 answer:
polet [3.4K]3 years ago
6 0

Answer:

1. Litres

2. minutes

3. Kelvin (K)

4. Kilometer/hour

5. hours

6. Litre

7. metre

8. metre

9. Litres

10. milliliters

Explanation:

1. Coca-Cola is a liquid substance, hence, its volume must be measured in LITRES.

2. This question is related to time I.e. being early, hence, the unit of measurement is MINUTES.

3. The unit of temperature is Kelvin (K). Therefore, water boils at 373K

4. This question is related to speed, whose unit of measurement is kilometer/hour (km/hr).

5. A movie runs with time, which is measured in HOURS.

6. Mineral water is a liquid, which can only be bought per volume. Hence, the appropriate unit is LITRE.

7. Height is measured in metres (m). Therefore, one can say that " the height of your younger brother is 10metres"

8. The length of a substance is also measured in metres.

9. Volume is measured in LITRES

10. Cough syrup is a drug whose volume is quantified by millilitres i.e. a thousandth litre

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irakobra [83]

Answer:

<u><em>Arrhenius Acid:</em></u>

According to Arrhenius concept, Acids are proton donors.

Since H₂SO₄ have a proton (H⁺ ion) and it can donate it to be made a sulphate ion, So it is an Arrhenius acid.

See the following reaction =>

<u><em>H₂SO₄ + H₂O => HSO₄ + H₃O⁺</em></u>

<u><em>Arrhenius Base:</em></u>

An Arrhenius base is a a proton acceptor.

KOH accepts the proton to to made to KOH₂ and a proton acceptor.

See the following reaction =>

<u><em>KOH + H₂o => KOH₂ + OH⁻</em></u>

<u><em></em></u>

6 0
3 years ago
7. What is the molarity, M, of the dilution solution of KBr, given:
sineoko [7]

Answer:

Hello There!!

Explanation:

I believe the answer is c. Volume of the dilute solution is 100.00 mL.

hope this helps,have a great day!!

~Pinky~

7 0
3 years ago
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Do you think it is a good idea for all scientists to use the same periodic table of elements? Why or why not?
postnew [5]
Yes because what other else can a scientist have
7 0
3 years ago
The vapor pressure of ethanol is 400. mmhg at 63.5°c. its molar heat of vaporization is 39.3 kj/mol. what is the vapor pressure
Vilka [71]

Answer: -

100 mm Hg

Explanation: -

P 1 =400 mm Hg

T 1 = 63.5 C + 273 = 336.5 K

T 2 = 34.9 C + 273 = 307.9 K

ΔHvap = 39.3 KJ/mol = 39.3 x 10³ J mol⁻¹

R = 8.314 J ⁻¹K mol⁻¹

Now using the Clausius Clapeyron equation

ln (P1 / P2) = ΔHvap / R x (1 / T2 - 1 / T1)

Plugging in the values

ln (400 mm/ P₂) = (39.3 x 10³ J mol⁻¹ / 8.314 J ⁻¹K mol⁻¹) x (\frac{1}{307.9 K} - \frac{1}{336.5 K}

= 1.38

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4 years ago
Chemical compounds
V125BC [204]

Answer: can be made up of one atom with several different elements in it (b)

Explanation:

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7 0
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