All categories

3 years ago

Which of the following is a valid unit for specific heat?

Chemistry

2 answers:

Marysya12 [62]3 years ago

6 0

Answer:

The answer is D

Explanation:

Pavel [41]3 years ago

5 0

Answer: Option (d) is the correct answer.

Explanation:

When a substance is heated and the heat used to raise its temperature by a unit mass of the given amount is known as specific heat of the substance.

Mathematically, $Q = mC\Delta T$

where Q = heat added in calories or joules

m = mass of substance in grams or kg

C = specific heat

$\Delta T$ = change in temperature

Thus, $c = \frac{cal}{g^{o}C}$

Hence, we can conclude that a valid unit for specific heat is ca $cal/g^{o}C$ .

You might be interested in

The density of Diamond is 3.51 g/cm3, and the density of platinum is 21.43 g/cm3. If equal masses of diamond and platinum are tr

Reptile [31]

Answer:

Explanation:

Diamond has lesser density than platinum . So , if we take equal mass of both , the volume of mass of platinum will be far less .

The density of both diamond and platinum are more than water so both of them will be drowned in water completely . They will not float . On being drowned , platinum will displace lesser volume of water because of its less volume . So volume change in case of platinum mass will be far less . The volume change for diamond will be more because of its bigger size.

4 0

3 years ago

Nitrogen dioxide is produced by combustion in an automobile engine. For the following reaction, 0.377 moles of nitrogen monoxide

Contact [7]

Answer:

The amount of NO₂ that can be produced 8.533 g

Explanation:

According to question

2 NO(g) + O₂(g) → 2 NO₂(g)

Given

Moles of nitrogen monoxide = 0.377

Moles of oxygen = 0.278

$'For NO'=\frac{Mole}{Stoichiometry}=\frac{0.377}{2} =0.1855\\'For O_{2} '=\frac{0.278}{1}= 0.278\\$

Since 'NO' is the limiting reagent according to this ratio.

According to equation

2 moles NO reacts to form 2 moles NO₂

So, 0.1855 moles NO give = 0.1855 moles of NO₂

Mass of 1 mole NO₂ = 46 g/mole

Mass of 0.1855 moles = 46 x 0.1855 = 8.533 g

5 0

4 years ago

How many neutrons does beryllium have?

PilotLPTM [1.2K]

5.

i answerd this b4

6 0

3 years ago

The chief advantage of the metric system over other system of measurement is that it

kolbaska11 [484]

Answer:

The metric system goes by powers of ten, so it's very easy to measure. That would be the main advantage, measurements of ten. We can also say it's the most used measurement around the world, so all scientists have little to no conversion, but the main answer is probably the first one :)

6 0

3 years ago

The atomic number of an element indicates the number of?

marshall27 [118]

Answer:

The number is mostly related to the mass or the weight of the element.

Explanation:

6 0

3 years ago