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zimovet [89]
3 years ago
5

A woman lives several miles from this explosion. Which statement is MOST LIKELY true? A) She will see the explosion before she h

ears it. B) She will hear the explosion before she sees it. C) She won't be able to see the explosion, but she'll hear it. D) She won't be able to hear the explosion, but she'll see it.
Chemistry
2 answers:
LekaFEV [45]3 years ago
8 0
It depends on the explosion. If it is a large one such as an atomic bomb, the correct answer would be A as light travels faster than sound. If the explosion is smaller like a firework or there are other obstacles impeding visual contact, then the answer would be C because sound cannot be blocked as light can
kari74 [83]3 years ago
4 0

Answer: A

Explanation: :)))))_))

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Acetone is a common solvent that has a density of 0.7899 g/mL. What volume of acetone, in milliliters, has a mass of 35.6 g?
lys-0071 [83]

Answer:

45.069 mL

Explanation:

mass/density=volume.

If we fill in the numbers provided, we would have:

35.6/0.7899=45.069

Don't forget to add your measurements!

45.069 mL

3 0
3 years ago
Predict products or C3H8 + O2 via combustion
EastWind [94]
When propane   is  burned  in  air  in  a process  known  as  combustion  it  produce   carbon  (IV) oxide  and  water
 the  word  equation  is  as follows,
  propane + oxygen--->carbon (IV)  oxide + water
chemical  equation  is  as follows
  2C3H8  +7O2--->  3CO2  + 8 H2O
hence  2 moles  of propane  reacted with 7  moles  of  oxygen  to  give 3  moles of  CO2  and  8  moles  of  H2o
4 0
3 years ago
The growth of the plants that the animal used for food could not keep up with the needs of the population. there was so little f
WARRIOR [948]

In this case, the population has exceeded the available food, thus causing a decline in the population.

<h3>What is carrying capacity?</h3>

It is the maximum population size that an ecosystem can sustain based on the resources that it has.

Above the carrying capacity, resources become extremely limited and competition becomes stiff in the population. Thus, the population declines.

Below the carrying capacity, resources are abundant and the population grows. Most of the time, a mature population hovers around the carrying capacity of the ecosystem.  

More on carrying capacity can be found here: brainly.com/question/797991

#SPJ1

8 0
2 years ago
What is the theoretical yield of aspirin ( C 9 H 8 O 4 ), which has a molar mass of 180.15 g/mol, possible when reacting 3.03 g
pantera1 [17]

Answer:

The theoretical yield of aspirin is 3.95 grams

Explanation:

Step 1: Data given

Mass of salicylic acid = 3.03 grams

Volume of acetic anhydride = 3.61 mL

Density of acetic anhydride = 1.08 g/cm³

Step 2: The balanced equation

C4H6O3+C7H6O3→C9H8O4+C2H4O2

Step 3: Calculate moles salicylic acid

Moles salicylic acid = mass salicylic acid / molar mass salicylic acid

Moles salicylic acid = 3.03 grams /138.121 g/mol

Moles salicylic acid = 0.0219 moles

Step 4: Calculate mass acetic anhydride

Mass acetic anhydride = volume * density

Mass acetic anhydride = 3.61 mL * 1.08 g/mL

Mass acetic anhydride = 3.90 grams

Step 5: Calculate moles acetic anhydride

Moles acetic anhydride = 3.90 grams / 102.09 g/mol

Moles acetic anhydride = 0.0382 moles

Step 6: Calculate limiting reactant

For 1 mol salicylic acid we need 1 mol acetic anhydride to produce 1 mol aspirin

Salicylic acid is the limiting reactant. It will completely be consumed. (0.0219 moles). Acetic anhydride is in excess. There will react 0.0219 moles. There remain 0.0382 - 0.0219 =0.0163 moles

Step 7: Calculate moles aspirin

For 1 mol salicylic acid we need 1 mol acetic anhydride to produce 1 mol aspirin

For 0.0219 moles salicylic acid we'll have 0.0219 moles aspirin

Step 8: Calculate theoretical yield of aspirin

Mass of aspirin = moles aspirin *molar mass aspirin

Mass of aspirin = 0.0219 moles *180.15 g/mol

Mass of aspirin = 3.95 grams

The theoretical yield of aspirin is 3.95 grams

7 0
4 years ago
Round 10.5 to 1 significant figure.
Bumek [7]
It is the answer of 10 51
5 0
3 years ago
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