1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Brilliant_brown [7]
3 years ago
6

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 cacal/g^{o}C.

You might be interested in
Quien quiere ser mi amigo
vfiekz [6]

Answer:

Me encantaría

Explanation:

7 0
2 years ago
A sample containing 16.93 metal pellets is poured into a graduated cylinder containing 11.2 of water, causing the water level in
mixer [17]

Answer:

<h3>The answer is 1.99 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 16.93 g

volume = final volume of water - initial volume of water

volume = 19.7 - 11.2 = 8.5 mL

We have

density =  \frac{16.93}{8.5}  \\  = 1.9917647058...

We have the final answer as

<h3>1.99 g/mL</h3>

Hope this helps you

7 0
3 years ago
When this reaction in equilibrium is heated, a red/brown color persists. what is true about this reaction? 2no2(
dimulka [17.4K]
NO₂ is a brown gas while N₂O₄ is colorless. If heating causes a brown color to persist, then this means that heating causes the reaction to shift backwards and produce NO₂. Therefore, the reaction must be exothermic.
7 0
3 years ago
At 2°C, the vapor pressure of pure water is 23.76 mmHg and that of a certain seawater sample is 23.09 mmHg. Assuming that seawat
wariber [46]

Answer:

0.808  M

Explanation:

Using Raoult's Law

\frac{P_s}{Pi}= x_i

where:

P_s = vapor pressure of sea water( solution) = 23.09 mmHg

P_i = vapor pressure of pure water (solute) = 23.76 mmHg

x_i = mole fraction of water

∴

\frac{23.09}{23.76}= x_i

x_i = 0.9718

x_i+x_2=1

x_2 = 1- x_i

x_2 = 1- 0.9718

x_2 = 0.0282

x_i = \frac{n_i}{n_i+n_2}  ------ equation (1)

x_2 = \frac{n_2}{n_i+n_2}  ------ equation (2)

where; (n_2) = number of moles of sea water

(n_i) = number of moles of pure water

equating above equation 1 and 2; we have :

\frac{n_2}{n_i}= \frac{0.0282}{0.9178}

= 0.02901

NOW, Molarity =  \frac{moles of sea water}{mass of pure water }*1000

= \frac{0.02901}{18}*1000

= 0.001616*1000

= 1.616 M

As we assume that the sea water contains only NaCl, if NaCl dissociates to Na⁺ and Cl⁻; we have \frac{1.616}{2} =0.808 M

3 0
2 years ago
Read 2 more answers
PLEASE HELP ME
vichka [17]
Light moves in a straight line except at surfaces between different transparent materials, where its path bends.
4 0
3 years ago
Other questions:
  • The length of a desk is 3.5 feet. how many centimeters is the length
    11·2 answers
  • Which quantity is equal to one Au
    12·1 answer
  • The most common isotope of nitrogen is nitrogen-14, or 14N. Which of the following atoms has the same number of neutrons as 14N?
    5·1 answer
  • When solid ammonium nitrate is heated it produces nitrogen gas and water vapor?
    12·1 answer
  • 0.005 kg = how many dg ?
    15·2 answers
  • Identify the type of energy involved in each step:
    14·2 answers
  • One gram of liquid benzene is burned in a bomb calorimeter. The temperature before ignition was 20.826 ℃, and the temperature af
    9·1 answer
  • What can cause heat exhaustion?
    10·1 answer
  • Why do scientists use scientideic notation?
    12·2 answers
  • What is the process of a gas changing back into a liquid called<br><br> PLEASEEEEEE HELP MEEEEEEE
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!