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valentina_108 [34]
2 years ago
10

(picture is a pic of cute colorful birds c: ) Suppose that you and a friend see brightly colored pigeons like these at a nature

park. Because pigeons are usually gray and white, you both wonder where these colors came from. Suddenly, your friend says, "I have a theory. These birds must get their colors from eating food that has the same colors."
Is your friend's explanation a scientific theory? Give reasons to explain your answer.

Chemistry
2 answers:
ella [17]2 years ago
8 0

Answer:

It is most definitely not a scientific theory. When you eat, say, blueberries for example, do you turn blue? No. It has to do with their genetic makeup, so their parents must have been fun colors.

Explanation:

Anit [1.1K]2 years ago
8 0

Answer:

Well yes it is a scientific theory because he examined the birds and gave a hypothesis on why the birds are different colors, before we knew how birds really got their colors, this could actually have been a very good theory. Birds get their colors just because of genetics, we wouldn't know this unless someone made a theory, tested it, and reported it's accuracy.

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A burner on a stove produces?
loris [4]

Answer:

thermal energy

Explanation:

7 0
3 years ago
Calculate the mass of ethyl alcohol required to prepare 540 grams of C4H6, if the reaction follows the scheme:
kkurt [141]

Answer:

Explanation:

2C₂H₅OH    =   C₄H₆  +  2H₂O  +  H₂

2 mole               1 mole

molecular weight of ethyl alcohol

mol weight of C₂H₅OH = 46 gm            

mol weight of C₄H₆  54 gm

540 gm of C₄H₆ = 10 mole

10 mole of C₄H₆ will require 20 mol of ethyl alcohol .

20 mole of ethyl alcohol = 20  x 46

= 920 gm

ethyl alcohol required = 920 gm .

3 0
3 years ago
LiOH+HBr---> LiBr +h20 If you start with 10.0 grams of lithium hydroxide, how many grams of lithium bromide will be produced?
kicyunya [14]
<span>LiOH+HBr---> LiBr +h20. Moles of LiOH = 10/24 = 0.41moles. According to stoichiometry, moles of LiOH = moles of LiBr = 0.41moles. Therefore mass of LiBr =moles of LiBr x molecular weight of LiBr = o.41 x 87 = 35.67g. Hope it helps </span>
7 0
3 years ago
For the balanced equation shown below, if the reaction of 0.112 grams of
Alekssandra [29.7K]

Answer:

The answer is 74.5%.

Explanation:

As we know that % yield=  \frac{actual yield}{theoretical yield} x 100%.

Therefore,

Step 1 Calculate Theoretical yield:

0.112H_{2} x   \frac{1 mol H_{2} }{2.016 g of H{2} }    x    \frac{4 mol H_{2}O }{4 mol H_{2} }    x  \frac{18.02 g H_{2}O }{1 mol H_{2}O}   = 1.001 g H_{2}O

Now Step 2

% yield   =  \frac{actual yield}{theoretical yield} x 100% =   \frac{0.745g}{1.001g} = 74.5%

8 0
3 years ago
Which one is correct for number 6 I can’t decide
nadezda [96]

I'm pretty sure it's D .

5 0
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