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3 years ago

7

What would be the best way for her to do this?

1 answer:

andrew-mc [135]3 years ago

5 0

Need more info plz :)

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How much heat is needed to melt 13.74 kg of silver that is initially at 20°C?

salantis [7]

Answer:

$Q = 4.63 \times 10^6 J$

Explanation:

As we know that melting point of silver is

T = 961.8 degree C

Latent heat of fusion of silver is given as

L = 111 kJ/kg

specific heat capacity of silver is given as

$s = 240 J/kg C$

now we will have

$Q = ms\Delta T + mL$

$\Delta T = 961.8 - 20$

$\Delta T = 941.8 degree C$

now from above equation

$Q = (13.74)(240)(941.8) + (13.74)(111 \times 10^3)$

$Q = 3.1 \times 10^6 + 1.53 \times 10^6$

$Q = 4.63 \times 10^6 J$

3 0

3 years ago

Quick does the watermelon have more or less mass then the 2kg bottle?

Ratling [72]

Answer

it will be less\

Explanation:

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3 years ago

Which statement is TRUE concerning the particle arrangement of a solid

Anni [7]

It's packed together

8 0

3 years ago

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Which of the following pairs of elements is most likely to form an ionic bond?

ser-zykov [4K]

Answer: the answer is D. Aluminum and nitrogen

Explanation:

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3 years ago

An airplane accelerates from rest to its required takeoff speed with an acceleration 5.0 m/s^2 after travelling on the runway a

Alex Ar [27]

Answer:

Explanation:

.75 km = 750 m

acceleration a = 5 m/s²

distance s = 750 m

initial velocity u = 0

Final velocity v = ?

v² = u² + 2as

v² = 0 + 2 x 5 x 750

v = 86.60 m /s.

5 0

3 years ago