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3 years ago

15

When each of the following is heated to 50 degrees Celsius and the temperature is held constant for five minutes, which one unde

rgoes only a physical change?
A) egg
B) steak
C) ice cream
D) cake batter

2 answers:

Anvisha [2.4K]3 years ago

8 0

Ice cream goes through the physical change

NISA [10]3 years ago

7 0

Ice cream will have a physical change because you can re freeze it and it will still be ice cream

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The answer to (3.540)x(0.0065)x(401) should have ____.

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B. Two significant figures

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3 years ago

PLEASE HELP!! GIVING BRAINLIEST

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Answer:

The answer is "0.00172172603".

Explanation:

Given:

$Mass (M) = 1.60 \times 10^{-3} \ g\\\\Density (D) = 9.293 \times 10^{-1} \ \frac{g}{cm^3}\\\\Volume (V) = ?$

Formula:

$\to \bold{V = \frac{M}{D}}$

$= \frac{1.60 \times 10^{-3}}{9.293 \times 10^{-1}} \\\\ = \frac{1.60 \times 10^{1}}{9.293 \times 10^{3}} \\\\ = \frac{1.60 \times 10}{9.293 \times 1000} \\\\ = \frac{1.60 }{9.293 \times 100} \\\\ = \frac{1.60 }{929.3 } \\\\= 0.00172172603$

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2 years ago

What is the change in boiling point for a 0.615m solution of Mgl2 in water?

ivanzaharov [21]

Answer : The change in boiling point is, $0.94^oC$

Explanation :

Formula used :

$\Delta T_b=i\times K_f\times m$

where,

$\Delta T_b$ = change in boiling point = ?

i = Van't Hoff factor = 3 (for MgI₂ electrolyte)

$K_f$ = boiling point constant for water = $0.51^oC/m$

m = molality = 0.615 m

Now put all the given values in this formula, we get

$\Delta T_b=3\times (0.51^oC/m)\times 0.615m$

$\Delta T_b=0.94^oC$

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3 years ago

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astraxan [27]

Answer:

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Specific heat capacit, C = ?

The relationship between these quantities is given by the equation;

H = mCΔT

C = H / mΔT

C = 4900 / (894)(23.3)

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2 years ago

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