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zheka24 [161]
3 years ago
10

Supersonic flight can cause molecules on the surface of an airplane to break

Chemistry
1 answer:
MAVERICK [17]3 years ago
6 0
I think it’s , D. This can cause sonic booms that can damage building structures
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Which parenting behavior does not increase the probability that offspring will survive? A. Producing milk to feed young B. Guard
horsena [70]
The answer would be D, abandoning young before eggs hatched, due to the fact that the eggs would probably fail to develop correctly as a result of improper care. The other choices would actually increase their chances of survival.
8 0
3 years ago
A block of pine wood has a mass of 120 g and a volume of 300 cm3. What is the density of wood? (Show your work)
Zielflug [23.3K]

Answer:

The answer is

<h2>0.4 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}

From the question

mass of wood = 120 g

volume = 300 cm³

So the density of the wood is

density =  \frac{120}{300}  \\  =  \frac{12}{30}  =  \frac{2}{5}

We have the final answer as

<h3>0.4 g/cm³</h3>

Hope this helps you

5 0
3 years ago
How do you draw a bohr diagram for a boron ion?
Otrada [13]
Because Boron likes to lose 3 electrons when it undergoes ionization, we draw a boron ion like a helium atom, with just 2 electrons in the first shell, and 0 in the second

5 0
2 years ago
Read 2 more answers
21 mL It required 42.35 mL of H2SO4 to neutralize 21.17 mL of 0.5000 M NaOH. Calculate the concentration of H2SO4
bija089 [108]
The balanced equation for the above reaction is 
2NaOH + H₂SO₄ ---> Na₂SO₄ + 2H₂O
stoichiometry of NaOH to H₂SO₄ is 2:1
number of NaOH moles required-0.5000 M / 1000 mL/L x 21.17 mL = 0.010585 mol
According to stoichiometry, acid moles required are 1/2 of the base moles reacted
Therefore number of H₂SO₄ moles reacted - 0.010585 /2  mol
Number of moles in 42.35 mL of H₂SO₄ - 0.010585 /2 mol
Therefore in 1 L solution - (0.010585) /2 / 42.35 mL x 1000 mL/L = 0.125 M
Molarity of H₂SO₄ - 0.125 M
5 0
3 years ago
Which part of the cell does this illustration represent?
Svetllana [295]
Answer: Mitochondria. The mitochondria contains cristae.
6 0
3 years ago
Read 2 more answers
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