3 years ago

Identify a false statement about how to protect iron from corrosion.

Chemistry

2 answers:

saw5 [17]3 years ago

6 0

Wouldn’t it be “B”? Can’t soemthing still get corroded under paint?

malfutka [58]3 years ago

5 0

Attach a metal that is more easily reduced i took the test

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For the following problems, identify the substance as either an element, a compound, or a mixture. Write E for Element, C for co

andre [41]

Answer:

Explanation:

34. E

35. M

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A 275 g sample of a metal requires 10.75 kJ to change its temperature from 21.2 oC to its melting temperature, 327.5 oC. What is

Vlada [557]

Answer:

$c=0.127\ J/g^{\circ} C$

Explanation:

Given that,

Mass of the sample, m = 275 g

It required 10.75 kJ of heat to change its temperature from 21.2 °C to its melting temperature, 327.5 °C.

We need to find the specific heat of the metal. The heat required by a metal sample is given by :

$Q=mc\Delta T$

c is specific heat of the metal

$c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{10.75\times 10^3\ J}{275\times (327.5 -21.2)}\\\\=0.127\ J/g^{\circ} C$

So, the specific heat of metal is $0.127\ J/g^{\circ} C$ .

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3 years ago

Which of the following ways can the volume of a gas be changed, without changing its mass? Select all that apply.

pochemuha

Answer:

It can be spread into a smaller container

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Explanation:

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