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Radda [10]
3 years ago
9

Plz answer the question in the picture.

Chemistry
2 answers:
astra-53 [7]3 years ago
5 0

Answer:

a

Explanation:

a mixture is a material made up of two or more different substances which are not chemically combined. A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.

r-ruslan [8.4K]3 years ago
3 0

Answer:

A digram show mixture

Because mixture is formed by simple mixing of many substances

And figure A shows different substances

Explanation:

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Adjustment to environmental conditions is known as
alukav5142 [94]

Answer:

A.

Explanation:

Adjust = Adapt if that makes sense.

8 0
2 years ago
Read 2 more answers
Five kilograms of liquid carbon tetrachloride undergo a mechanically reversible, isobaric change of state at 1 bar during which
Drupady [299]

Answer:

Explanation:

From the information given:

Mass of carbon tetrachloride = 5 kg

Pressure = 1 bar

The given density for carbon tetrachloride = 1590 kg/m³

The specific heat of carbon tetrachloride =  0.84 kJ/kg K

From the composition, the initial volume of carbon tetrachloride will be:= \dfrac{5 \ kg }{1590 \ kg/m^3}

= 0.0031 m³

Suppose \beta is independent of temperature while pressure is constant;

Then:

The change in volume can be expressed as:

\int ^{V_2}_{V_1} \dfrac{dV}{V} =\int ^{T_2}_{T_1} \beta dT

In ( \dfrac{V_2}{V_1})  = \beta (T_2-T_1)

V_2 = V_1 \times exp (\beta (T_2-T_1))

V_2 = 0.0031 \ m^3  \times exp  (1.2 \times 10^{-3} \times 20)

V_2 = 0.003175 \ m^3

However; the workdone = -PdV

W = -1.01 \times 10^5 \ Pa \times ( 0.003175 m^3 - 0.0031 \ m^3)

W = - 7.6 J

The heat energy Q = Δ h

Q = mC_p(T_2-T_1)

Q = 5 kg \times 0.84 \ kJ/kg^0 C \times 20

Q = 84 kJ

The internal energy is calculated by using the 1st law of thermodynamics; which can be expressed as;

ΔU = ΔQ + W

ΔU = 84 kJ + ( -7.6 × 10⁻³ kJ)

ΔU = 83.992 kJ

3 0
3 years ago
Step 3: Measure the Reaction Rate at 40°C
Anit [1.1K]

Answer: Temperature of the water is 40

Reaction time: 26.3

Explanation: literally just press the tongs in the workslide!

8 0
3 years ago
Which of the following compounds has the highest boiling point?
anastassius [24]

Answer:

Butanoic acid

Explanation:

7 0
3 years ago
Please help~~ thank you so much
deff fn [24]

Answer:

c. 2 and 3

Explanation:

Ca(NO3)2 names calcium nitrate.

Ca metal, O, N - nonmetals, so Ca(NO3)2 is ionic compound.

It is solid and white.

4 0
3 years ago
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