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
fredd [130]
3 years ago
14

How did modern scientists experiment with Van Gogh's paints to determine their chemical reactions?

Chemistry
2 answers:
Dafna1 [17]3 years ago
6 0

Answer:They used X-ray analysis

Explanation:

It’s in the text

Andrei [34K]3 years ago
5 0

Answer:

I think the answer is A - they used X-ray analysis.

Explanation:

You might be interested in
Which of the following is a correctly written chemical equation that demonstrates the conservation of mass?
wlad13 [49]

if I'm not mistaking it would be the second option

6 0
2 years ago
An open flask sitting in a lab refrigerator looks empty, but it is actually filled with a mixture of gases called air. If the fl
ira [324]

Answer:

9.39 × 10²² molecules

Explanation:

We can find the moles of gases (n) using the ideal gas equation.

P . V = n . R . T

where,

P is the pressure (standard pressure = 1 atm)

V is the volume

R is the ideal gas constant

T is the absolute temperature (standard temperature = 273.15 K)

n=\frac{P.V}{R.T} =\frac{1atm.3.50L}{(0.08206atm.L/mol.K).273.15K} =0.156mol

There are 6.02 × 10²³ molecules in 1 mol (Avogadro's number). Then,

0.156mol.\frac{6.02\times10^{23}molecules}{mol} =9.39\times10^{22}molecules

4 0
3 years ago
BALANCE THE EQUATION:<br> C4H10 + O2 = CO2 + H2O
Tasya [4]

2 C 4 H 10 ( g ) +  13 O 2 ( g )  =  8 C O 2 ( g ) +  10 H 2 O ( g )

6 0
3 years ago
Choose the correct statement regarding the relative size of atoms:
Sonbull [250]

Answer:

The atoms on left side are larger than the atoms on the right side of the periodic table because those on the right have more proton's.

Explanation:

As we travel along a period in a periodic table then the atomic radii decreases

This is because as we travel along a period we have that the atomic number of the atoms increases which means the the number of proton's increased

But the electron's add to the same outer shell throughout the period , which means the effective nuclear charge increases which pulls the outer electrons toward's the nucleus and the size decreases.

Therefore the atoms on left side are larger than the atoms on the right side of the periodic table because those on the right have more proton's.

6 0
3 years ago
What’s the temperature of a liquid that turns into a gas at 135 degrees Celsius
nadezda [96]
The answer is about 1/2 it rises very sloe
3 0
3 years ago
Other questions:
  • What are mole ratios used for?
    7·1 answer
  • When mowing the lawn what greenhouse gas are you generating
    7·1 answer
  • gypsum is hydrated calcium sulfate. a 4.89 g sample of this hydrate was heated, and after the water was driven off, 3.87 g anhyd
    9·1 answer
  • 9)
    7·1 answer
  • How many C atoms are there in 5.25 grams of a compound containing 92.26% C and 7.74% H?
    9·1 answer
  • Order the follow processes from (1) the least work done by the system to (5) the most work done by one mole of an ideal gas at 2
    15·1 answer
  • describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located​
    7·1 answer
  • What property do all of the group 18 elements have that makes them stand out from other elements?
    9·1 answer
  • Can somebody please help me
    6·1 answer
  • Елементите от IА и IIА групи на Периодичната система
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!