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
Evgen [1.6K]
3 years ago
15

Can you help me with this one pls

Chemistry
1 answer:
sweet-ann [11.9K]3 years ago
6 0

Answer:

a. IV - Different Colored Light Bulbs used on tomato plants

b. DV - Growth, and effects that occur to plant

c. Control = The 5th plant that goes under a typical white light bulb.

d. 3 Constants Include:

-Amount of time plants are under each light (12 hr period)

-Same amount of water given to each plant

-Same type and amount of soil given to each plant.

You might be interested in
Can formaldehyde molecules dissolve well in water?
Mice21 [21]

Answer:

Formaldehyde is highly soluble in water.

Explanation:

Formaldehyde is the simplest of the aldehydes (R−CHO) it is an organic compound which occurs naturally with the formula H−CHO. . The IUPAC name of formaldehyde is methanal.

Formaldehyde  at room temperature is a colorless gas and the liquid is invisible or like white-water. Formaldehyde has an irritating and very pungent like odour. Formaldehyde is very soluble in water.

Now according to Henry's constant law (3 × 10-5 kPa·m3/mol) Formaldehyde will be very unlikely to volatilize from water.and hence, Formaldehyde is considered to be highly soluble in water.

3 0
4 years ago
** will mark you brainliest if answered correctly **
lord [1]

Answer:

D. 23.9 liters

Explanation:

  • Molarity is defined as the no. of moles of solute dissolved in 1.0 L of the solution.

M = (no. of moles)solute / (V of the solution (L))

M = (mass/molar mass)NaCl / (V of the solution (L))

M = 0.03 M, mass of NaCl = 42.0 g, molar mass = 58.44 g/mol.

∴ V of the solution = (mass/molar mass)NaCl / M = [(42.0 g/58.44 g/mol)] / (0.03 M) = 23.96 L.

<em>So, the right choice is: D. 23.9 liters</em>

7 0
3 years ago
Which of these substances is a compound <br><br> Carbon<br> Chlorine<br> Uranium <br> Ammonia
svetlana [45]
The answer to this question will be Uranium
4 0
3 years ago
When you heat a liquid, the molecules spread farther apart and the liquid expands, and when you cool a liquid, the molecules get
ale4655 [162]

Answer:

the water is diffrent because it is now a gas not a liquid

Explanation:

4 0
4 years ago
Read 2 more answers
I need help FAST ASAP
kiruha [24]
In this item, we are simply to find the ions that may bond and are able to form a formula unit. We are also instructed to give out their name. There are numerous possible combinations of ions to form a compound. Some answers are given in the list below.

1.  Na⁺     ,    Cl⁻    , NaCl   ---> sodium chloride (this is most commonly known as table salt)

2. C⁴⁺       , O²⁻     , CO₂  ---> carbon dioxide

3. Al³+     , Cl⁻       , AlCl₃   ----> aluminum chloride

4. Ca²⁺     , Cl⁻     , CaCl₂    ---> calcium chloride

5. Li⁺        , Br⁻      , LiBr       ---> lithium bromide

6. Mg³⁺     , O²⁻      , Mg₂O₃   ----> magnesium oxide

7. K⁺        , I⁻          , KI   ---> potassium iodide

8. H⁺        , Cl⁻        , HCl  --> hydrogen chloride

9. H⁺        , Br⁻         , HBr ----> hydrogen bromide

10. Na⁺    , Br⁻         , NaBr   ---> sodium bromide
6 0
4 years ago
Other questions:
  • Which is true about all the different types of matter?
    12·1 answer
  • What happens to in the protoplanetary
    14·1 answer
  • What is the pH of a 40.0 40.0 mL solution that is 0.11 0.11 M in CN − CN− and 0.21 0.21 M in HCN HCN ? The K a Ka for HCN is 4.9
    11·1 answer
  • When scientists obtain new information, what happens to an existing scientific theory?
    9·1 answer
  • A solution containing CaCl2 is mixed with a solution of Li2C2O4 to form a solution that is 2.1 × 10-5 M in calcium ion and 4.75
    9·1 answer
  • A container holds 22.4 L of gas at 1.00 atm and 0.0˚C.
    5·1 answer
  • Why is the Statue of Liberty covered with a greenish bluish cover when it should be in brown color as it is made out of copper ?
    15·2 answers
  • The boiling point of a pure substance is defined as the temperature at which
    14·1 answer
  • Help mee pleasee its urgent<br> ..<br> thank uuuu&lt;3
    11·2 answers
  • How a reaction between colorless substances can produce a colored precipitate
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!