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
ludmilkaskok [199]
3 years ago
9

Why does a red object appear red?

Chemistry
2 answers:
NeTakaya3 years ago
8 0

Answer:

Objects appear different colours because they absorb some colours (wavelengths) and reflected or transmit other colours. ... For example, a red shirt looks red because the dye molecules in the fabric have absorbed the wavelengths of light from the violet/blue end of the spectrum

maw [93]3 years ago
8 0

Answer:c

Explanation:

You might be interested in
Can someone help me please
strojnjashka [21]
Yes what do u need help with
7 0
3 years ago
Cinnamon owes its flavor and odor to cinnamaldehyde (C9H8O). Determine the boiling point elevation of a solution of 92.7 mg of c
Flauer [41]

Answer:

The boiling point elevation is 3.53 °C

Explanation:

∆Tb = Kb × m

∆Tb is the boiling point elevation of the solution

Kb is the molal boiling point elevation constant of CCl4 = 5.03 °C/m

m is the molality of the solution is given by moles of solute (C9H8O) divided by mass of solvent (CCl4) in kilogram

Moles of solute = mass/MW =

mass = 92.7 mg = 92.7/1000 = 0.0927 g

MW = 132 g/mol

Moles of solute = 0.0927/132 = 7.02×10^-4 mol

Mass of solvent = 1 g = 1/1000 = 0.001 kg

m = 7.02×10^-4 mol ÷ 0.001 kg = 0.702 mol/kg

∆Tb = 5.03 × 0.702 = 3.53 °C (to 2 decimal places)

6 0
3 years ago
How many coppers of each atom in the products
yarga [219]

Answer:

Explanation:

moler mass of Cu is 63.546 g/mol. Since 63.546 g of copper has 6.022 x 10 power(23) atoms (Avogadro's number). = 9.5 x 10(power)21 atoms of copper.

6 0
2 years ago
Which of the following types of radiation can be shielded by piece of paper or fabric
Keith_Richards [23]
There are 3 major types of radiation. The Alpha, Beta and Gamma radiation. It is the Alpha radiation that can be stopped by a piece of paper or fabric. Beta on the other hand can be stopped by plastic or a thin sheet of metal and Gamma by a piece of aluminum foil or lead. 
8 0
3 years ago
Los fenomenos fisicos son cambios permamentes en la materia?
alexgriva [62]

Answer:

Explanation:

Try English please

5 0
3 years ago
Other questions:
  • Hydrochloric is added to a beaker containing a piece of zinc. As a result, zinc chloride is formed and hydrogen gas is released.
    5·1 answer
  • Which of these is always equal to the molar mass of any element?
    12·2 answers
  • It is possible for the transition metal zinc to form more than one possible ion
    6·1 answer
  • Write the chemical equation for the reaction of propylamine, c3h7nh2 with water.
    14·2 answers
  • 1.
    5·2 answers
  • Assessment
    15·1 answer
  • Explain the periodic trend for ionization energy and why this occurs?
    14·1 answer
  • Answer the following questions ( image) with the given options.​​
    5·2 answers
  • What is the mass number of an oxygen isotope that has nine neutrons.
    11·1 answer
  • A change that produces a new substance is a _______ change
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!