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
morpeh [17]
3 years ago
11

Mercury can be used in thermometers to measure a temperature range from -38*C to 350*C. Explain why this is possible.

Chemistry
1 answer:
user100 [1]3 years ago
6 0

Answer:

Below -38*C Mercury will freeze. Above 350*C Mercury will begin to boil.

Explanation:

Each element has different boiling and freezing points. For mercury this is these set constraints.

You might be interested in
The label on a container of margarine lists "hydrogenated vegetable oil" as the major ingredient. what is the result of adding h
raketka [301]

Catalytic hydrogenation causes the oil to become saturated. So hydrogenated vegetable oil has fewer trans fatty acids and thereby less kinks. The greater the unsaturation (double bonds) the higher is the "kinks" in the fatty acid chains. Hydrogenated vegetable oil have higher melting point causing them to be solids at room temperature such as margarine. In the absence of double bonds (hydrogenated) the fatty acids pack tightly in a crystal lattice. Hydrogenated vegetable oil is likely to clog arteries.

4 0
3 years ago
Read 2 more answers
The bond between f and cl would be: pure covalent polar covalent ionic metallic
nexus9112 [7]
I believe the bond between between F and Cl would be polar covalent.
7 0
4 years ago
Read 2 more answers
why only elements 1-20 (hydrogen to calcium) are shown through Bohr-Rutherford models. Any element bigger than calcium (those in
Elza [17]

Answer:

As previously discussed, there is a connection between the number of protons in an element, the atomic number that distinguishes one element from another, and the number of electrons it has. In all electrically-neutral atoms, the number of electrons is the same as the number of protons. Each element, when electrically neutral, has a number of electrons equal to its atomic number.

Explanation:

7 0
3 years ago
It is believed that two C-12 nuclei can react in the core of a supergiant star to form Na-23 and H-1. Calculate the energy relea
Leno4ka [110]

Answer:

c. 2.16 × 10^8 kJ

Explanation:

In the given question, 2 C-12 nuclei were used for the reaction and the mass of C-12 is 12.0000 amu. Therefore, for  2 C-12 nuclei, the mass is 2*12.0000 = 24.0000 amu.

In addition, a Na-23 and a H-1 were formed in the process. The combined mass of the products is 22.989767+1.007825 = 23.997592 amu

The mass of the reactant is different from the mass of the products. The difference = 24.0000 amu - 23.997592 amu = 0.002408 amu.

Theoretically, 1 amu = 1.66054*10^-27 kg

Thus, 0.002408 amu = 0.002408*1.66054*10^-27 kg = 3.99858*10^-30 kg

This mass difference is converted to energy and its value can be calculated using:

E = mc^2 = 3.99858*10^-30 *(299792458)^2 = 3.59374*10^-13 J

Furthermore, 1 mole of hydrogen nuclei contains 6.022*10^23 particles. Thus, we have:

E = 3.59374*10^-13 * 6.022*10^23 = 2.164*10^11 J = 2.164*10^8 kJ

4 0
4 years ago
Which of the following is the correctly balanced chemical equation for the reaction of Ca(OH)2 and HNO3?
sleet_krkn [62]

Answer : The correct option is D.

Explanation :

Balanced chemical equation : It is defined as the mass or component of each atom should be equal on both sides of the equation.

The balanced chemical equation for the reaction of Ca(OH)_2 and HNO_3 is,

Ca(OH)_2+2HNO_3\rightarrow 2H_2O+Ca(NO_3)_2

So, the correct option is D.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the molar solubility of magnesium fluoride (MgF2) in a solution that is 0.250 M in NaF. For magnesium fluoride, Ksp =
    11·1 answer
  • What discovery was made about particles with an accelerator in 1998
    14·2 answers
  • The distribution or scatter of bones at a crime scene gives no indication about the time of death.
    11·2 answers
  • Which state of matter has a definite volume but an indefinite shape?
    9·1 answer
  • Which statement correctly describes the nucleus of the atom?
    5·1 answer
  • The diameter of a carbon atom is 0.000000000154 m. What is this number expressed in scientific notation?
    7·2 answers
  • Which of the following was not a part of dalton's atomic theory?
    9·1 answer
  • What is electrical energy
    6·2 answers
  • Which of these fibres is a raw material obtained from plants? (A) rayon (B) polyester (C) terrylene (D) nylon
    5·1 answer
  • If a water molecule (h2o) has two hydrogen atoms and one oxygen atom, how would you describe the make up of a carbon dioxide mol
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!