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
dezoksy [38]
3 years ago
12

What did Becquerel expect to find when he developed the film from the photographic plates in the drawer? He expected to find one

dark spot instead of two. He expected to find no darkening of the film at all. He expected the film to be totally darkened.
Chemistry
1 answer:
prisoha [69]3 years ago
8 0

Answer: he expected to find no darkening of the film all because it hadn't been exposed to sunlight yet.

You might be interested in
How many moles are in 3.4 x 10-7 grams of Silicon dioxide, SiO2?
Varvara68 [4.7K]

Answer:

Number of moles = 0.057 × 10⁻⁷  mol

Explanation:

Given data:

Mass of SiO₂ = 3.4 × 10⁻⁷ g

Number of moles = ?

Solution:

Number of moles = mass/molar mass

Molar mass of SiO₂ = 60 g/mol

by putting values,

Number of moles =  3.4 × 10⁻⁷ g / 60 g/mol

Number of moles = 0.057 × 10⁻⁷  mol

8 0
3 years ago
PLEASE ANSWERRRRRRR
Neporo4naja [7]

Answer:

D

Explanation:

Because the silk took away the electrons to allow the rod to become positive. They cant be destroyed because of the law of conservation of charges. Also protons cannot move only electrons can.

8 0
3 years ago
Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction:
Leni [432]

Answer:

science ka Hindi kya hoga

8 0
2 years ago
I WILL MARK BRAINLIEST How could this sentence be re-written to convey the active voice?
Fed [463]
C is the answer to this question
5 0
3 years ago
Read 2 more answers
A substance has a boiling point of 78 °C. Which of the following is true about the substance? (5 points) a It will also change f
vovangra [49]

Answer: If a substance has a boiling point of 78^{o}C then it is true that it will also change from a gas to a liquid at 78 °C while the gas loses energy.

Explanation:

The temperature at which vapor pressure of a liquid substance becomes equal to the atmospheric pressure is called boiling point of substance.

At the boiling point, liquid phase and vapor phase remains in equilibrium.

This means that as liquid phase changes into vapor phase and also vapor phase changes into liquid phase at the boiling point.

Thus, we can conclude that if a substance has a boiling point of 78^{o}C then it is true that it will also change from a gas to a liquid at 78 °C while the gas loses energy.

6 0
2 years ago
Other questions:
  • Question 7 When of benzamide are dissolved in of a certain mystery liquid , the freezing point of the solution is lower than the
    14·1 answer
  • An element occurs as a mixture of isotopes. The atomic mass of an element is based upon
    9·1 answer
  • Carbon dioxide enters an adiabatic nozzle at 1200 K with a velocity of 75 m/s and leaves at 400 K. Assume constant specific heat
    14·1 answer
  • What is Reflection? ​
    15·1 answer
  • Calculate the molecular mass of iron (Ill) oxide (Fe,O3)
    11·1 answer
  • Which example in the video is a physical change?
    5·1 answer
  • Can a substance be a Lewis acid without being a Bronsted-Lowry acid?<br> Please argue on it
    7·1 answer
  • Determine the relative formula mass of dihydrogen monoxide using the periodic table below.
    11·1 answer
  • a gas has a volume of 2.00 at 323k and 3.00 ATM What would be the new volume if the temperature is changed to 273 K in the press
    12·1 answer
  • some regions of a polypeptide may coil or fold back on themselves. this is called , and the coils or folds are held in place by
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!