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
iren2701 [21]
2 years ago
9

A scientist observes that the electrical resistance of a superconducting material drops to zero when the material is cooled

Chemistry
1 answer:
frutty [35]2 years ago
7 0

Answer:

<h2>The scientist is observing an intensive property of a superconductor.</h2>

Explanation:

This is the answer because no matter how much of the superconductor material is present  the resistance of the superconducting material still drops to zero when the material is cooled to very low temperatures

You might be interested in
: Citric acid, H3C6H5O7, is a triprotic acid. Consider a buffer system comprising H2C6H5O7 - and HC6H5O7 2- ions. What is the ne
olchik [2.2K]

Answer:

The Net reaction is    

  1.    H_3C_6H_5O_7 + 0H^- ----> H_2C_6H_5O_7^- +H_2O \ \ \ \ \ \ \ Main \ Reaction
  2.    H_2C_6H_5O_7^ - + OH^- ----> H_C_6H_5O_7^{ 2-} + H_2O \ \ \ \ Add \ NaOH
  3.    HC_6H_5O_7 ^{2-} + OH^- ---> C_6H_5O_7^{3-} +H_2O \ \ \ \ \ Add \ NaOH  

Explanation:

From the Question we are told that the buffers are

                H_2C_6H_5O_7^ - and  HC_6H_5O_7 ^{ 2-}

When NaOH is added the Net ionic reaction would be

  1.    H_3C_6H_5O_7 + 0H^- ----> H_2C_6H_5O_7^- +H_2O \ \ \ \ \ \ \ Main \ Reaction
  2.    H_2C_6H_5O_7^ - + OH^- ----> H_C_6H_5O_7^{ 2-} + H_2O \ \ \ \ Add \ NaOH
  3.    HC_6H_5O_7 ^{2-} + OH^- ---> C_6H_5O_7^{3-} +H_2O \ \ \ \ \ Add \ NaOH  

             

8 0
3 years ago
Read 2 more answers
Question 5
Stolb23 [73]

Answer:

There are 17.64% students received B+ grades.

Explanation:

It is given that,

Total number of students in chemistry class is 17

We need to find the percentage received by B+.

Number of students having B+ grades are 3 (from graph)

Required percentage = P=\dfrac{3}{17}\times 100=17.64\%

So, there are 17.64% students received B+ grades.

8 0
3 years ago
Which lists the substances from least to most acidic?
Rus_ich [418]

Answer:

A.   Have an amazing day!!

Explanation:

7 0
3 years ago
A large, semi-truck hauling a full load and a small car are traveling in the same direction. As they approach a sharp curve in t
WARRIOR [948]
The semi will have the hardest time changing direction because of its mass. The more mass there is, the more effort it takes to accelerate and decelerate as well as change direction.
7 0
3 years ago
The combustion reaction of c3h8o with o2 is represented by this balanced chemical equation. 2c3h8o + 9o2 6co2 + 8h2o when 3.00 g
MArishka [77]
<span>According to the question- 1 mol C3H8O = 60.096 g C3H8O 2 mol C3H8O = 9 mol O2 1 mol O2 = 31.998 g O2 [(3.00 g C3H8O)/1][(1 mol C3H8O)/(60.096)][(9 mol O2)/(2 mol C3H8O)][(32.998 g O2)/(1 mol O2)] = 7.1880435 g O2 Since 7.1880435 g of O2 is needed, and 7.38 g of O2 is available, 0.199565 g of O2 will be left over and oxygen is present in excess. Next, we need to convert 0.199565 g of O2 into moles of O2: [(0.199565 g O2)/1][(1 mol O2)/(31.998 g O2)] = 0.005999 mol O2, or 0.006 mol O2</span>
3 0
3 years ago
Other questions:
  • Please help!
    12·1 answer
  • rank the four gases (air, exhaled air, gas produced from the decomposition of H2O2, gas from decomposition of NaHCO3, in order o
    15·2 answers
  • NaCl<br> Quantity of element
    13·2 answers
  • Use the helium-4 isotope to define atomic number and mass number. why does knowledge of atomic number enable us to deduce the nu
    7·1 answer
  • Explain why ionic compound do not form molecules.
    9·1 answer
  • The energy needed to get a reaction started is the
    10·2 answers
  • The reaction between dihydrogen sulfide and sulfur dioxide is outlined below. 2 H2S(g) S02(g) -Y 3 S(s) 2 H20(g) a. Identify the
    13·1 answer
  • How are reactivity patterns on the periodic table related to an element's use in everyday applications?
    15·1 answer
  • The ability to do work or cause change is
    13·1 answer
  • Write the empirical formula for at least four ionic compounds that could be formed from the following ions:
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!