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
sdas [7]
3 years ago
7

How does light interact with materials

Chemistry
1 answer:
Ainat [17]3 years ago
6 0

Answer:

ok I got the right answer

HAVE A NICE DAY GOOD MORNING

You might be interested in
Find the natural abundance of Si-30.
nataly862011 [7]
<span> First you need to know how many isotopes there are of silicon, and its average atomic units (look at periodic table). Then make up a system of equations to solve for it. Theres 3 stable silicon isotopes (28, 29, 30) so you will need to have 3 equations. You must be given the percent abundance of at least one of the isotopes to solve because here I can only see 2 equations (numbered down below) set x = percent abundance of si-28 y = percent abundance of si-29 z = percent abundance of si-30 since all of silicon atoms account for 100% of all silicon: x + y + z = 100% = 1 therefore: 1) x = 1 - y - z You also have 2) 28x + 29y + 30z = average atomic mass you can substitute x so that equation becomes: 28 (1 - y - z) + 29y + 30z = average atomic mass See how you have 2 variables here? You cant go on until you know the value of one isotope already or you have given a clue which you can derive the third equation</span>
5 0
3 years ago
A ball is dropped from a height of 20 meters. At what height does the ball have a velocity of 10 meters/second?
musickatia [10]

Answer:

15m

Explanation:

vi = 0

vf = 10

a = -9.8

10^2 = 0 + 2(-9.8)(x2-x1) = -5.1

20-5.1 = 14.9m = 15m

3 0
2 years ago
How many molecules of CBr4 are in 250 grams of CBr4
Kazeer [188]

Answer:- 4.54*10^2^3 molecules.

Solution:- The grams of tetrabromomethane are given and it asks to calculate the number of molecules.

It is a two step unit conversion problem. In the first step, grams are converted to moles on dividing the grams by molar mass.

In second step, the moles are converted to molecules on multiplying by Avogadro number.

Molar mass of CBr_4  = 12+4(79.9)  = 331.6 g per mol

let's make the set up using dimensional analysis:

250g(\frac{1mol}{331.6g})(\frac{6.022*10^2^3molecules}{1mol})

= 4.54*10^2^3 molecules

So, there will be 4.54*10^2^3 molecules in 250 grams of CBr_4 .


8 0
3 years ago
Predict: Will a 1500 kg car moving at the same speed as the tennis ball have
sergeinik [125]
The car will have more momentum because it has a greater mass. Momentum= mass x velocity therefore if both the objects have the same velocity the object with a greater mass will have more momentum
4 0
3 years ago
Which compound is produced by a neutralization?
olchik [2.2K]

Explanation:

HNO3(aq) is the compound produced by a neutralization

6 0
3 years ago
Other questions:
  • “All compounds containing H atoms are acids, and all compounds containing OH groups are bases.” Do you agree? Give examples.
    8·1 answer
  • Sound is not part of a electromagnetic spectrum because
    10·1 answer
  • Which is a characteristic of nuclear fusion but NOT nuclear fission?
    15·2 answers
  • Catalytic converters made of palladium (Pd) reduce automobile pollution by catalyzing the reaction between unburned hydrocarbons
    15·2 answers
  • Ammonia (NH3) can be produced by the reaction of hydrogen gas with nitrogen gas:
    12·1 answer
  • When converting from moles to molecules OR molecules to moles you use what quantitative value?
    13·1 answer
  • 1. It has been suggested that pain results from a change in the pH of solutions that surround nerves in the body.
    10·1 answer
  • ..............................................
    6·1 answer
  • Which of the following is a gaseous substance that is liquid or solid at room
    10·1 answer
  • What happens when you drop a feather and hammer on the moon and why
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!