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
xxTIMURxx [149]
2 years ago
15

Which object is a good conductor of heat and electricity?

Chemistry
1 answer:
Alex2 years ago
8 0

Answer:

C

Explanation:

Metals are good conductors of heat

You might be interested in
Jill graphs the speed of a model train that is travelling at a speed of 15 kilometers per hour. Which graph shows the speed of t
Tasya [4]

Answer:c

Explanation:

8 0
3 years ago
Harry Hess resurrected Wegener’s continental drift hypothesis and also the mantle convection idea of Holmes.
stepan [7]

Answer:

true

Explanation:

7 0
2 years ago
Read 2 more answers
Which has the reverse chemical reaction as
Mazyrski [523]

Answer:

please further explain your question

4 0
2 years ago
You have a ballon filled with hydrogen gas which keeps it at a constant pressure, regardless the volume. The initial volume of t
abruzzese [7]

Answer:

619°C

Explanation:

Given data:

Initial volume of gas = 736 mL

Initial temperature = 15.0°C

Final volume of gas = 2.28 L

Final temperature = ?

Solution:

Initial volume of gas = 736 mL (736mL× 1L/1000 mL = 0.736 L)

Initial temperature = 15.0°C (15+273 = 288 K)

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

T₂ = T₁V₂/V₁  

T₂ = 2.28 L × 288 K / 0.736 L

T₂ = 656.6 L.K / 0.736 L

T₂ = 892.2 K

K to °C:

892.2 - 273.15 = 619°C

7 0
2 years ago
What are the limitations of litmus paper and Phenolphthalein indicators? Name to other indicators that can be used that do not h
jenyasd209 [6]

Answer:

Here's what I find.

Explanation:

An indicator is usually is a weak acid in which the acid and base forms have different colours. Most indicators change colour over a narrow pH range.

(a) Litmus

Litmus is red in acid (< pH 5) and blue in base (> pH 8).

This is a rather wide pH range, so litmus is not much good in titrations.

However, the range is which it changes colour includes pH 7 (neutral), so it is good for distinguishing between acids and bases.

(b) Phenolphthalein

Phenolphthalein  is colourless in acid (< pH 8.3) and red in base (> pH 10).

This is a narrow pH range, so phenolphthalein is good for titrating acids with strong bases..

However, it can't distinguish between acids and weakly basic solutions.

It would be colourless in a strongly acid solution with pH =1 and in a basic solution with pH = 8.

(c) Other indicators  

Other acid-base indicators have the general limitations as phenolphthalein. Most of them have a small pH range, so they are useful in acid-base titrations.

The only one that could serve as a general acid-base indicator is bromothymol blue, which has a pH range of 6.0 to 7.6.

5 0
3 years ago
Other questions:
  • Vinegar contains an organic compound with the following functional group. What type of organic compound is vinegar an example of
    12·1 answer
  • The technetium-99 nuclide radioactively decays by beta emission. write a balanced nuclear chemical equation that describes this
    8·1 answer
  • What is the total number of carbon atoms in a molecule of ethanoic acid?
    12·1 answer
  • 4.00 g of sodium and 2.00 g of oxygen react according to the following balanced equation 4 Na + O2 → 2 Na2O Calculate the mass o
    7·1 answer
  • Which statement about the energy of a phase change is true?
    12·2 answers
  • Molecules condense when the temperature ______________.<br> A. increases<br> B. decreases
    5·2 answers
  • Which one is a chemical reaction? Why?
    15·1 answer
  • When a drawing of a circle made in the center of a piece of paper with a black marker gets wet, the marker bleeds, and as the wa
    8·1 answer
  • Annie learns that the compound sulfuric acid is called the universal chemical. The acid is used in everything from gasoline to p
    13·1 answer
  • What kind of crystalline solid is copper?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!