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skad [1K]
3 years ago
15

NEED HELP ASAP!!!! PLEASE ANSWER THESE QUESTIONS FOR 25+ POINTS AND A BRAINLIEST, KEEP IN MIND THESE QUESTIONS ARE VERY IMPORTAN

T AND WILL DETERMINE MY GRADE!!!!(NO GUESSING, SPAMMING OR LINKS)
This is energy that is stored for later use.

kinetic energy
potential energy
mechanical energy
electromagnetic energy.

A ball rolling down the hill is an example of ___ energy.
1 point
Kinetic
Potential
Electrical
Sound

Requires two parents
1 point
Sexual reproduction
Asexual Reproduction

Small grains that contain a plant's male reproductive cells.
1 point
stamen
pollen
pistil
stigma

C, D , and E are collectively known as the ______.
1 point
Captionless Image
stamen
anther
sepal
pistil

Small leaf-like structures forming an outer circle at the base of a flower.
1 point
petals
sepal
stigma
pistil

The stalk that supports or holds up the anther is the
1 point
style
filament
ovary
pistil

A flower structure that encloses and protects ovules and seeds as they develop.
1 point
Petal
Ovule
Stigma
Ovary

the part of the ovary of seed plants that contains the female germ cell and after fertilization becomes the seed.
1 point
Ovule
Style
Stamen
.Pistil

Supports the stigma, serves as passageway for pollen
1 point
Anther
Style
Stem
Ovule

Renewable energy resources are?
1 point
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

Coal and oil are?
1 point
Non-Renewable energy resources
Renewable energy resources
None of the above

Bio-fuel and geothermal energy are examples of?
1 point
Non-renewable energy resources
Hydro energy
Renewable energy resources
None of the above

What is the name of flower part #10 ?
1 point
Captionless Image
sepal
pollen tube
filament
stigma

Which of the following is NOT a Natural Resource?
1 point
Coal
Paper
Solar
Wind

What is the disadvantage of using non-renewable resources?
1 point
They have a large carbon footprint.
They can all be used up over time.
They can lead to global w
Chemistry
1 answer:
ladessa [460]3 years ago
3 0

Answer:

1) d

2) a

3) a

4) b

5) d

6) b

7) d

8) a

9) b

10) d

11) a

12) b

13) b

14) b

15) c

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A cube of an unknown metal measures 0.250 cm on one side. The mass of the cube is 0.134 g. Which of the following is most likely
rosijanka [135]

Answer:

8.58 g/cm3

Explanation:

density = mass / volume

be attention that the question gives u the length of

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1st we calculate the volume of the cube :

 V of cube = a 3= axaxa

                 = 0.250 x0.250 x0.250

                 = 0.0156 cm3

 2nd step

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4 0
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Read 2 more answers
What is the limiting reagent when a 2.00 g sample of ammonia is mixed with 4.00 g of oxygen?​
UNO [17]

Answer:

Ammonia is limiting reactant

Amount of oxygen left  = 0.035 mol

Explanation:

Masa of ammonia = 2.00 g

Mass of oxygen = 4.00 g

Which is limiting reactant = ?

Balance chemical equation:

4NH₃ + 3O₂     →     2N₂ + 6H₂O

Number of moles of ammonia:

Number of moles = mass/molar mass

Number of moles = 2.00 g/ 17 g/mol

Number of moles = 0.12 mol

Number of moles of oxygen:

Number of moles = mass/molar mass

Number of moles = 4.00 g/ 32 g/mol

Number of moles = 0.125 mol

Now we will compare the moles of ammonia and oxygen with water and nitrogen.

                      NH₃          :            N₂

                        4             :             2

                      0.12           :           2/4×0.12 = 0.06

                      NH₃         :            H₂O

                        4            :             6

                        0.12       :           6/4×0.12 = 0.18

                       

                       O₂            :            N₂

                        3             :             2

                      0.125        :           2/3×0.125 = 0.08

                        O₂           :            H₂O

                        3              :             6

                        0.125       :           6/3×0.125 = 0.25

The number of moles of water and nitrogen formed by ammonia are less thus ammonia will be limiting reactant.

Amount of oxygen left:

                        NH₃          :             O₂

                           4            :              3

                           0.12       :          3/4×0.12= 0.09

Amount of oxygen react = 0.09 mol

Amount of oxygen left  = 0.125 - 0.09 = 0.035 mol

3 0
3 years ago
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