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
zubka84 [21]
3 years ago
8

I NEED HELP PLEASE !!!!

Chemistry
2 answers:
iogann1982 [59]3 years ago
6 0

Answer:

the mean i believe sorry if im wrong

Explanation:

hope this helps ;)

inysia [295]3 years ago
3 0

Answer:

over 10 weeks the plant will grow 24 time longer than the the same hieght of the plant and the plant age will become 45 and so the plant is very much give hey man is my answer corecct

Explanation:

You might be interested in
Many insulating materials contain spaces filled with air because air is what type of material?
Rina8888 [55]
<span>It is because air is a poor conductor of heat. Good luck ;)</span>
6 0
3 years ago
Question 18 (Essay Worth 8 points)
DENIUS [597]

Yes, the law of conservation of mass holds.

Explanation:

In every chemical reaction, mass is always conserved. This implies that in chemical reaction, the process proceeds maintaining the same set of atom in the same proportion without new ones forming.

  • From the description given, decomposition of the Silver carbonate will produce a silver residue with the given mass.
  • The other mass that seems lost can be examined to be given off as carbon dioxide gas which is the other product of the reaction and oxygen.
  • Therefore, since the products are silver, carbon dioxide and oxygen, the remaining mass is that of the carbon dioxide and oxygen. It is not lost.

learn more:

brainly.com/question/6837993

brainly.com/question/8912651

#learnwithBrainly

4 0
3 years ago
A change in which property of light will have no effect on whether or not the photoelectric effect occurs?
Ksju [112]

Answer:

Intensity

Explanation:

The correct answer is -Intensity

Reason -

Intensity has no affect on whether or not the photoelectric effect occurs.

As frequency , wavelength are inversely proportional.

6 0
2 years ago
The vapor pressure of liquid octane, C8H18, is 40.0 mm Hg at 318 K. A sample of C8H18 is placed in a closed, evacuated container
Sergio039 [100]

Answer:

a, d

Explanation:

a. The pressure in the container will be 42.8 mm Hg.

d. Some of the vapor initially present will condense.

6 0
3 years ago
Calculate the frequency (Hz) and wavelength (nm)
sergey [27]

Answer:

wavelength, λ =  486.6 nm

frequency, f = 6.16 * 10¹⁴ Hz

Explanation:

a. Wavelength

Using the wavelength equation; 1/λ = (1/hc) * 2.18 * 10⁻¹⁸ J * (1/nf² - 1/ni²)

Where nf is the final energy level; ni is the initial energy level; h is Planck's constant = 6.63 * 10⁻³⁴ J.s; c is velocity of light = 3 * 10⁸ m/s

1/λ = 1/(6.63 * 10⁻³⁴ J.s * 3 * 10⁸ m/s) * 2.18 * 10⁻¹⁸ J * (1/2² - 1/4²)

1/λ = 2.055 * 10⁶ m

λ = 4.866 * 10⁻⁷ m

wavelength, λ =  486.6 nm

b.  Frequency

Using f = c/λ

f = (3 * 10⁸ m/s) / 4.866 * 10⁻⁷ m

frequency, f = 6.16 * 10¹⁴ Hz

7 0
3 years ago
Other questions:
  • To ensure its survival, any species must be able to
    12·2 answers
  • Is the study of matter and energy ,and the interactions between the two through forces and motion​
    7·2 answers
  • White phosphorus melts and then vaporizes at high temperatures. The gas effuses at a rate that is 0.404 times that of neon in th
    7·1 answer
  • A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4
    13·1 answer
  • which contains the most amount of energy a glass of water at 20C or a glass of water at 80C. EXPLAIN ANSWER
    11·1 answer
  • A scientist is studying a sample of matter. The matter has no definite shape or volume, and it can conduct an electric current.
    12·2 answers
  • A tank can hold up to 2500 liters of liquid. The tank initially contains 1000 liters of a brine solution with 50kg of salt. A br
    10·1 answer
  • Select the keyword or phrase that will best complete each sentence. law is a gas law that relates pressure and volume and states
    9·1 answer
  • Help me with chemmm!!!
    6·1 answer
  • In a sample containing 100 atoms of X, 70 were found to be 9X while 30 were 11X isotopes. Determine the average relative atomic
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!