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dusya [7]
3 years ago
11

NEED ANSWERS ASAP!!! 20 POINTS IF YOU ANSWER ALL QUESTIONS(NO LINKS, SPAMMING OR GUESSING)

Chemistry
1 answer:
Vlad [161]3 years ago
3 0

Captionless Image

sepal

pollen tube

filament

Stigma

Renewable energy resources are?

A resource that cannot be readily replaced by natural means on a level equal to its use.

Invisible resources

Renewable resources that can be naturally restored.

All the above

To produce perfumes for Man

This is energy that is stored for later use.

kinetic energy

potential energy

mechanical energy

electromagnetic energy.

When fertilization has occurred the fertilized ovule changes and so does the ovary. What do they turn into?

The fertilized ovule turns into the fruit and the ovary turns into the seed.

The ovule grows bigger and the ovary withers.

The fertilized ovule turns into a seed and the ovary turns into the fruit or pod.

The fertilized ovule turns into honey and the ovary turns into nectar.

What is energy?

1 point

moving energy

stored energy

renewable energy

The ability to do work.

Wind-pollinated flowers usually have ______ and ________ petals.

1 point

big ... bright

small .... bright

big ... dull

small ... dull

What is the function of nectar?

To provide food for the flower

To attract pollinators

To attract animals to disperse the fruits

Which of the following devices transforms electrical energy into mechanical energy?

1 point

An e-reader

a fan

a manual pencil sharpener

iPod

its one of these and chillll

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Complete the statement to describe the calcium concentration that must be maintained in human body cells. ( fill in the blank )T
erik [133]

Answer:

The calcium concentration must be greater outside the cell than inside the cell.

Explanation:

My previous answer was deleted from the explanation I provided from another website.

7 0
3 years ago
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Na2CrO4 + PbCL2<br> Formula in double replacement
Marta_Voda [28]

Na₂CrO₄ + PbCl₂ → PbCrO₄ + 2 NaCl

<u>Explanation:</u>

In a double displacement reaction, the reactants which are involved in the reaction exchanging their ions thereby produces 2 new compounds. Here sodium chromate and lead chloride are undergoing double displacement reaction, the ions exchanges their position there by forming sodium chloride and lead chromate. So the double displacement reaction is given as,

Na₂CrO₄ + PbCl₂ → PbCrO₄ + 2 NaCl

6 0
3 years ago
Which statement best explains the net transfer of energy that is about to
ArbitrLikvidat [17]

Answer:

Explanation:

B I got it right

8 0
2 years ago
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43. A stock glucose standard has a concentration of 1,000 mg/dL. A 1/5 dilution of this standard is made. What would be the fina
Nat2105 [25]

The final concentration of the diluted standard is 0.2 mg/dL.

<h3 /><h3>What is concentration of glucose standard after 1/5 solution?</h3>

Using the dilution formula:

  • C1V1 = C2V2

where

  • C1 is initial concentration
  • V1 initial volume
  • C2 is final concentration
  • V2 is final volume.

Assuming a final volume of 100 mL, and since a 1/5 dilution is made:

C1 = 1.00 mg/dL

V1 = 20

C2 = ?

V2 = 100 mL

C2 = C1V1/V2

C2 = 20 × 1/100

C2 = 0.2 mg/dL

Therefore, the final concentration of the diluted standard is 0.2 mg/dL.

Learn more about dilution at: brainly.com/question/24881505

6 0
2 years ago
Indicate the direction of polarity of each of the following covalent bonds. Please just write a + or - not the bonds.
Nostrana [21]

Answer:

1. C+ ---- O-

2. O+ ---- Cl-

3. O+ ----- F-

4. C+ ----- N-

5. Cl- ----- C+

6. S- ----- H+

7. S+ ----- Cl -

Explanation:

Electronegativity determines the polarity . There may be two atoms in a bond with high electronegativity, in such cases the positive charge is given to atom with comparatively lower electronegativity. Electronegativity determines the easiness with which an atom attract electrons in a chemical bond. A polar bond is formed when the difference in the electronegativity of two combining atoms is between 0.4 and 1.7. The correct direction is

1. C+ ---- O-

2. O+ ---- Cl-

3. O+ ----- F-

4. C+ ----- N-

5. Cl- ----- C+

6. S- ----- H+

7. S+ ----- Cl -

5 0
3 years ago
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