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
34kurt
2 years ago
7

Calculate: A. Mercury has a specific Heat Capacity of 0.14 J/goC. How much heat is needed to raise the thermometer temperature 1

5 oC to 95 oC. There is 5 g of mercury in the thermometer.
Chemistry
1 answer:
kari74 [83]2 years ago
4 0

Answer:

\boxed {\boxed {\sf 56 \ Joules}}

Explanation:

We are given the mass, specific heat, and temperature, so we must use this formula for heat energy.

q=mc \Delta T

The mass is 5 grams, the specific heat capacity is 0.14 Joules per gram degree Celsius. Let's find the change in temperature.

  • ΔT= final temperature - initial temperature
  • ΔT= 95°C - 15°C = 80°C

We know the variables and can substitute them into the formula.

m= 5 \ g \\c= 0.14 \ J/ g \ \textdegree C \\\Delta T= 80 \ \textdegree C

q= (5 \ g )( 0.14 \ J/ g \ \textdegree C ) ( 80 \ \textdegree C)

Multiply the first numbers. The grams will cancel.

q= 0.7 \ J/ \textdegree C(80 \ \textdegree C )

Multiply again. This time the degrees Celsius cancel.

q= 56 \ J

56 Joules of heat are needed.

You might be interested in
What type of rock forms when rocks melt, cool, and then harden?
olga2289 [7]

Answer:

Igneous Rock

Explanation:

3 0
2 years ago
What is the velocity of a wave traveling north with a frequency of 75 hertz and a wavelength of
Vanyuwa [196]

Answer:

v = 450 m/s

Explanation:

Given data:

Frequency = 75 Hz

Wavelength = 6 m

Velocity = ?

Solution:

Velocity is the product of frequency and wavelength.

v = f × λ

v = 75 Hz ×  6 m

Hz = s⁻¹

v = 75  s⁻¹  ×  6 m

v = 450 m/s

3 0
2 years ago
Neutrons have. a.negative b.positive c.no charge d.nucleus
Firdavs [7]
A negative That's the answer
5 0
3 years ago
How many grams of CO are needed to react with an excess of Fe 2 O 3 to produce 209.7 g Fe?
gavmur [86]

Answer:

Mass = 157.5 g

Explanation:

Given data:

Mass of CO needed  = ?

Mass of Fe formed = 209.7 g

Solution:

Chemical equation:

3CO + F₂O₃   →       2Fe + 3CO₂

Number of moles of Fe:

Number of moles = mass/ molar mass

Number of moles = 209.7 g/ 55.85 g/mol

Number of moles = 3.75 mol

Now we will compare the moles of iron and carbon monoxide.

                               Fe            :              CO

                                 2            :              3

                                3.75         ;             3/2×3.75 = 5.625 mol

Mass of CO:

Mass = number of moles × molar mass

Mass = 5.625 mol × 28 g/mol

Mass = 157.5 g

4 0
2 years ago
What is the ph value of the produced solution when hcl reacts with naoh ?
algol13

Answer:

The answer to your question is: 7

Explanation:

The reaction between HCl and NaOH is a neutralization reaction, that means that the products will be water and a salt and the pH will be 7.

                     HCl + NaOH  ⇒  NaCl + H₂O

4 0
3 years ago
Other questions:
  • Im teaching myself chemistry and need a guide. anyone game?
    15·1 answer
  • A mole of lead will be heavier than a mole of oxygen because
    14·1 answer
  • Determine whether each statement describes a solution of a strong electrolyte, weak electrolyte, or non-electrolyte.
    7·1 answer
  • A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the f
    5·1 answer
  • What volume of 2.5% (m/v) KOH can be prepared from 125 mL of a 5.0% KOH solution?
    10·1 answer
  • Why is the wave energy lower when it reaches the receiver? (Hint: think about what you know about visible light.)
    5·2 answers
  • I really need help with this question please help me.
    11·1 answer
  • Formic acid (HCOOH) is secreted by ants. Calculate [H3O+] for a 1.17E-2 M aqueous solution of formic acid (Ka = 1.80E-4).
    12·1 answer
  • I have little or no rainfall for long periods of time. I cause death to all living things because of lack of water. What am I?
    8·1 answer
  • 50 POINTS!!!!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!