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
ioda
2 years ago
13

Help pleaseeeeeeeeeee

Chemistry
1 answer:
hichkok12 [17]2 years ago
6 0

Answer:

D 1 and 3 only I am not sure

Explanation:

You might be interested in
What is the deference between dalton theory and modern atomic theory​
Fiesta28 [93]

Answer:

Dalton's says atoms of different elements differ in size and mass, whereas the modern theory says they differ in average mass. Dalton's says atoms are individual particles, whereas the modern theory says atoms are divisible into subatomic particles like protons, neutrons, and electrons..

Explanation:

HOPES  ITS HELPFUL FOR U IF YES PLZ MARK ME AS BRILLIANT PLZ DUDE PLZ I NEED IT

3 0
2 years ago
What is the density of a block of marble that occupies 277 cm3 and has a mass of 928 g? Answer in units of g/cm3 .
Evgesh-ka [11]
V=277cm^{3}\\
m=928g\\\\
d=\frac{m}{V}=\frac{928g}{277cm^{3}}\approx3,35\frac{g}{cm^{3}}
8 0
3 years ago
Problem Page Question It takes to break a carbon-carbon single bond. Calculate the maximum wavelength of light for which a carbo
Marizza181 [45]

This is a incomplete question. The complete question is:

It takes 348 kJ/mol to break a carbon-carbon single bond. Calculate the maximum wavelength of light for which a carbon-carbon single bond could be broken by absorbing a single photon. Round your answer to correct number of significant digits

Answer: 344 nm

Explanation:

E=\frac{Nhc}{\lambda}

E= energy  = 348kJ= 348000 J  (1kJ=1000J)

N = avogadro's number = 6.023\times 10^{23}

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


c = speed of light = 3\times 10^8ms^{-1}

348000=\frac{6.023\times 10^{23}\times 6.626\times 10^{-34}\times 3\times 10^8}{\lambda}

\lambda=\frac{6.023\times 10^{23}\times 6.626\times 10^{-34}\times 3\times 10^8}{348000}

\lambda=3.44\times 10^{-7}m=344nm    1nm=10^{-9}m

Thus the maximum wavelength of light for which a carbon-carbon single bond could be broken by absorbing a single photon is 344 nm

5 0
3 years ago
Which particle of the atom has a negative charge?
Sophie [7]

The answer would be B, an electron because the proton is positive, neutron is neutral, and the nucleus is the center of the atom.
7 0
3 years ago
Read 2 more answers
Which term best describes a unit of carbon dioxide?
Lelechka [254]

Answer:

Molecule.

Explanation:

carbon and fluorine. Based on the bonding, a unit of carbon dioxideis described as a molecule.

7 0
2 years ago
Other questions:
  • Challenge question: This question is worth 6 points. As you saw in problem 9 we can have species bound to a central metal ion. T
    7·1 answer
  • How are a carrot, an amoeba, and a bacterium alike?
    5·1 answer
  • 2. Why would a calcium (Ca) atom be larger than a bromine (Br) atom even
    13·1 answer
  • Sugars have a(n) __________ group that interacts with a _________ group that forms ring structures when the dry molecule is plac
    6·1 answer
  • You live 6 kilometers from your school. How many meters do you live from school?
    9·2 answers
  • How many protons are there in H2S ?
    5·1 answer
  • Which explains how coolers work?
    13·1 answer
  • WILL GIVE BRAINLIEST ANSWER!!!
    7·1 answer
  • Provide the correct IUPAC name for Sr(OH)2 - 7H20.
    14·1 answer
  • In a terrarium, the pincushion moss, the echeveria, and the moon cactus make up which of the following? Select all that apply. A
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!