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Ilya [14]
3 years ago
11

Grief is conducting an experiment to see whether goldfish eat more takes or pellots. He thinks that the fish will choose the fla

kes. Every day, Geoff places both flakes and pellets in a fish tank and observes which food the fish
crone. What evidence would be best for Good to collect as he observes the fish?
the time for the fish to finish eating
the number of th that eat each type of food
themes for the shto choose what type of food to eat
Chemistry
1 answer:
Lyrx [107]3 years ago
5 0

Answer: The number of fish that eat each type of food

Explanation:

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In nature, oxygen has three common isotopes. The atomic masses and relative abundances of these isotopes are given in the table
Vaselesa [24]

Answer: The average atomic mass of oxygen is 15.999 amu

Explanation:

Mass of isotope O-16 = 15.995 amu

% abundance of isotope O-16= 99.759 % = \frac{99.759}{100}=0.99759

Mass of isotope O-17 = 16.995 amu

% abundance of isotope O-17 = 0.037% = \frac{0.037}{100}=0.00037

Mass of isotope O-18 = 17.999 amu

% abundance of isotope O-18 = 0.204% = \frac{0.204}{100}=0.00204

Formula used for average atomic mass of an element :

\text{ Average atomic mass of an element}=\sum(\text{atomic mass of an isotopes}\times {{\text { fractional abundance}})

A=\sum[(15.995\times 0.99759)+(16.995\times 0.00037)+(17.999 \times 0.00204)]

A=15.999

Thus the average atomic mass of oxygen is 15.999 amu

5 0
3 years ago
What property of Granite makes it useful for making roads
Flura [38]

Answer:igneous rock

Explanation:

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How do I go from molecules to moles? For example 1.50e23 molecules NH3 how many moles are in this problem?
maxonik [38]
To go from molecules to moles divide by Avogadro's number [<span>6.02x10^23]</span>
Example:
1.50x10^23 divided by 6.02x10^23 = 0.249 moles rounded to three significant figures
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In which image is the wave amplitude the greatest?<br> 4<br> 3<br> 2<br> 1
gladu [14]
Answer:4
Step by step
7 0
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What is the predicted ionic charge of an element in group via/16?
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Generally, the top elements in group 16 will have a charge of -2, although the entire group isn't standardized.

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