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3 years ago

Is raisins nuts and dried fruit a heterogeneous mixture

Chemistry

1 answer:

DanielleElmas [232]3 years ago

5 0

YES THEY ARE TWO DIFFERENT ITEMS AND HETERO= DIFFERENT HOPE THIS HELPED

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The solid dissolves quickly is a chemical or physical reaction

Vladimir79 [104]

Answer:

i think it is chemical wait no physical

Explanation:

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3 years ago

If the producers of the ecosystem below make 14,000 units of energy. How much energy would be available to the very top trophic

STALIN [3.7K]

Answer:

1.4

Explanation took test

8 0

3 years ago

10. What is the specific heat of an unknown substance if a 2.50 g sample releases 12 calories as its

Sergeu [11.5K]

Answer:

c = 4016.64 j/g.°C

Explanation:

Given data:

Mass of substance = 2.50 g

Calories release = 12 cal (12 ×4184 = 50208 j)

Initial temperature = 25°C

Final temperature = 20°C

Specific heat of substance = ?

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Solution:

Q = m.c. ΔT

ΔT = T2 - T1

ΔT = 20°C - 25°C

ΔT = -5°C

50208 j = 2.50 g . c. -5°C

50208 j = -12.5 g.°C .c

50208 j /-12.5 g.°C = c

c = 4016.64 j/g.°C

4 0

3 years ago

Which one of the following is not a property of a base?

AlekseyPX

Answer:

option B is correct

Explanation:

5 0

3 years ago

10. A small gold nugget has volume of 0.87 cm3. What is its mass if the density of gold is 19.3 g/cm3?

bulgar [2K]

Answer:

16.791 grams

Explanation:

The density formula is:

$d=\frac{m}{v}$

Rearrange the formula for m, the mass. Multiply both sides of the equation by v.

$d*v=\frac{m}{v}*v$

$d*v=m$

The mass of the gold nugget can be found by multiplying the density and volume. The density is 19.3 grams per cubic centimeter and the volume is 0.87 cubic centimeters.

$d= 19.3 g/cm^3\\v-0.87 cm^3$

Substitute the values into the formula.

$m=d*v$

$m= 19.3 g/cm^3*0.87 cm^3$

Multiply. Note that the cubic centimeters, or cm³ will cancel each other out.

$m=19.3 g*0.87$

$m=16.791 g$

The mass of the gold nugget is 16.791 grams.

8 0

3 years ago