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
Tems11 [23]
3 years ago
13

What colors would an artificial plant-growth light favor to promote plant growth effectively?

Chemistry
1 answer:
Semenov [28]3 years ago
3 0
Red and blue but im not sure abt the percentage.
You might be interested in
Some metals corrode very readily. Metals from which groups might be used to provide a protective coating? Justify the answer
Andreyy89

Explanation:

Cadmium, nickel, chromium, and silver are sometimes used as protective platings. Metals have a wide range of corrosion resistance. The most active metals (i.e., those that tend to lose electrons easily)--such as magnesium and aluminum--corrode easily and are listed at the top of Table 2-1.

8 0
3 years ago
Which adaptation is likely to increase the chances of survival of an animal in a rainforest?
LiRa [457]
I know I think it’s a A

6 0
3 years ago
Which factor explains why coal dust in an enclosed space is more explosive than coal dust blown outdoors into an open space ? A.
leonid [27]

Answer:

Option C:- Concentration

Explanation:

Coal dust explosion can cause lots of damage. To avoid

this, the amount or concentration of coal dust per unit

volume or MEC is measured with the various conditions

of coal storage such as the particle size, moisture of coal,

degree of dispersion and delayed time of ignition source

to prevent the coal dust explosion which aims to study

and design the explosion safety measures for coal dust

handing installations. The results present that moisture

content in coal has more effect on dust explosion. The

smaller size of particle, low moisture in coal and high

coal dust dispersion can increase the possibility or risk of

dust explosion.

6 0
3 years ago
How long must $542 be invested at a rate of 7% to earn $303.52 in interest
yulyashka [42]

The number of years that must be invested at  a rate of 7 % to earn$ 303.52 in interest is

    8 years

 <em><u>calculation</u></em>

  • <em><u> </u></em><em>by use of  the formula       A = P (1+  rt) </em>
  • <em>  where :  A  is the final amount  =  542 + 303.52  =$ 845.52</em>

<em>                    P  is the principal   money to be invested =  $ 542</em>

<em>                        r= rate= 7/100=0.07</em>

<em>                       t=  time required</em>

<em>=$ 845.52=$ 542( 1+  0.07 t)</em>

  • <em>open the  bracket</em>
  • <em>= $845.53= $542 + $37.94  t</em>

  • <em>like terms  together</em>

    =$  845.53 -$542  = $37.94 t

   =$303.52 =$37.94 t

  • divide both  side by  $37.94

  =  $303.52/ $   37.94  =  $37.94t/$37.94

  t=  8 years

7 0
2 years ago
You need a 35% alcohol solution. on hand, you have a 405 ml of a 30% alcohol mixture. you also have 80% alcohol mixture. how muc
Bumek [7]

You must add 45 mL of the 80 % alcohol to the 30 % alcohol to get a 35 % solution.

You can use a modified dilution formula to calculate the volume of 80 % alcohol

V1×C1 + V2×C2 = V3×C3

Let the volume of 80 % mixture 1 = <em>x</em> mL. Then the volume of the final 35 % mixture 3 = (405 + <em>x</em> ) mL

(<em>x</em> mL×80 % alc) + (405 mL×30 % alc) = (405 + <em>x</em>)mL × 35 % alc

80x + 12 150 = 14 175 + 35 x

45x = 2025

x = 2025/45 = 45

4 0
2 years ago
Other questions:
  • What is the function of a restriction enzyme?
    6·1 answer
  • What is the ph of a solution of 0.550 m k2hpo4, potassium hydrogen phosphate?
    10·1 answer
  • The concentration of dye in Solution A is 26.609 M. You have 13 mL of water at your disposal to make the dilutions. The solution
    5·1 answer
  • What is the energy of light associated with a transition from n=3 to n=8 in a hydrogen atom? Does this represent absorption or e
    6·1 answer
  • harry potter flips a coin (not magical ) 8 times. He gets heads 1 time. What are the odds that his next flip will be heads? A 10
    8·1 answer
  • How much heat is needed to raise the temperature of 6g of water by 17oC?
    5·2 answers
  • If 100 yards = 1 football field, what is the length, in meters, of 4.9<br> football fields?
    11·1 answer
  • A) Find the gas speed of sulfur dioxide at 100.0 degrees Celsius? ______________
    9·1 answer
  • Which item is denser than liquid water?
    13·1 answer
  • Where does fertilization occurs in human beings​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!