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
Eddi Din [679]
3 years ago
11

I need help with this.

Chemistry
2 answers:
Irina-Kira [14]3 years ago
8 0

Answer:

C . Tungsten

Explanation:

I hope this helps im not sure

Phoenix [80]3 years ago
4 0

Answer:

can you show a clearer picture of the chart?

Explanation:

You might be interested in
What is the mass, in grams, of 1.58 mol of water, h2o?
inn [45]
Answer is: mass of 1,58 mol of water is 28,44 grams.
n(H₂O) = 1,58 mol.
M(H₂O) = 2 · 2 g/mol + 16 g/mol.
M(H₂O) = 18 g/mol.
m(H₂O) = n(H₂O) · M(H₂O).
m(H₂O) = 1,58 mol · 18 g/mol.
m(H₂O) = 28,44 g.
n - amount of substance.
M - molar mass.
3 0
3 years ago
Light acts like a
8_murik_8 [283]
Particle
wave are the words you're looking for to fill in the blanks
7 0
2 years ago
Read 2 more answers
Of these four liquids which is the most viscous?<br> a) h20<br> b) ccl4<br> c) c2h12o6<br> d) Hg
Tresset [83]
Answer is: d) Hg.
Mercury is a chemical element with the symbol Hg and atomic number 80. <span> Mercury is the only metallic element that is liquid at standard conditions for temperature and pressure.
</span>Absolute viscosity of mercury is 0,0015 Pa·s.
The viscosity<span> of a </span>fluid<span> is a measure of its </span>resistance<span> to gradual deformation by </span>shear stress<span> or </span><span>tensile stress</span>

7 0
3 years ago
How many molecules are present in 1 teaspoon of sucrose if its mass is 4.10g? show your work
frozen [14]
4.10 g C12H22O11 * ( 1 mol / 342.2965 g ) * ( 6.022x10^23 / 1 mol ) = <span>7.2107077x10^21 molecules = 7.21x10^21 molecules

Convert grams to moles using the molar mass ( g/mol ).

Use Avogadro's constant ( 6.022x10^23 ) to get the quantity of molecules from the amount of moles.

Revise answer to have the correct number of significant figures ( the smallest amount of digits in any number in the problem is the amount of significant figures your answer should have ).</span>
7 0
2 years ago
An important reaction in the formation of photochemical smog is the photodissociation of NO2: NO2 + hv &gt;&gt;&gt; NO(g) + O(g)
vaieri [72.5K]

Explanation:

NO_2 + hv\rightarrow NO(g) + O(g)

The maximum wavelength of light that can cause this reaction is 420 nm.

a) The wavelength given lies in the range of visible light range that is from 400 nano meters to 700 nano meters.

The light with wavelength of 420 nm is found in the range of visible light.

b)The maximum strength of a bond :

E=\frac{h\times c}{\lambda}

where,

E = energy of photon = Energy required to break single molecule of nitrogen dioxide

h = Planck's constant = 6.626\times 10^{-34}Js

c = speed of light = 3\times 10^8m/s

\lambda = wavelength = 420 nm=420\times 10^{-9}m

E=\frac{6.626\times 10^{-34}Js\times 3\times 10^8 m/s}{420\times 10^{-9}m}

E=4.733\times 10^{-19} J

Energy required to break 1 mole of nitrogen dioxide molecules:

= E\times N_A=4.733\times 10^{-19} J\times 6.022\times 10^{23} mol^{-1}

=285,012.66 J/mol=285.13 kJ/mol

(1 J = 0.001 kJ )

285.13 is the maximum strength of a bond, in kJ/mol, that can be broken by absorption of a photon of 420-nm light.

c) the photodissociation reaction showing Lewis-dot structures is given in an image attached.

6 0
3 years ago
Other questions:
  • Evidence shows that interstellar bodies are moving away from Earth, some faster than others, which BEST suggests that the univer
    15·2 answers
  • give the chemical composition of the followings : Name Chemical Composition Coal gas Water gas Producer gas Natural gas
    15·1 answer
  • When will diffusion slow down
    13·1 answer
  • An element has six valence electrons available for bonding which group of the periodic table does this element most likely belon
    7·2 answers
  • NEED HELP QUICKLY!!! How many moles are in each of the following?
    12·1 answer
  • where 1s, 2s, and 2p are the occupied subshells, and the superscript "2" is the number of electrons in each of these subshells.
    14·1 answer
  • I have a question about ionization energy.
    11·1 answer
  • What is a measure of force that is generated by the action of gravity on the mass of an object
    5·1 answer
  • What is the energy of a photon with the frequency of 1.02 x 1015 Hz?<br> Please show your work!
    13·1 answer
  • Due to the formation of hydrogen bonds, _____ is highly soluble in water.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!