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Umnica [9.8K]
3 years ago
6

????how many students failed this science class???

Chemistry
1 answer:
deff fn [24]3 years ago
6 0

Answer:

B

Explanation:

You take the 50-69 and you add up the students and it will allow you to get 7

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Which elements are the most reactive and why?
worty [1.4K]

Answer:

Fluorine is identified as the most reactive nonmetal and the most electro-negative element in the periodic table, making it the strongest oxidizing agent. Caesium is the most reactive metal in the periodic table, so much that working with this metal often ends in explosions!

Hydrogen is a very reactive gas, and the alkali metals are even more reactive. In fact, they are the most reactive metals and, along with the elements in group 17, are the most reactive of all elements.

Hope that helps.

5 0
2 years ago
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What word is used to refer to a group of organ systems working together?
kotegsom [21]

Answer:

1

Explanation:

in my opinion,The answer would be organism

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6 0
3 years ago
On average, Earth’s crust contains about 8.1% aluminum by mass. If a standard 12-ounce soft drink can contains approximately 15
MrMuchimi

Answer:

5400 cans

Explanation:

First we convert the total weight, 1 ton, to grams:

1ton=1x10^{6}g

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n=\frac{81000g}{15g/can} =5400cans

8 0
3 years ago
In a nuclear reaction, the energy released is equal to 8.1 x 1016 joules. Calculate the mass lost in this reaction. (1 J = 1 kg
makvit [3.9K]
Use the formula E=mc^2
energy given=<span>8.1 x 10^16 joules
</span>speed of <span>light = 3.00 × 10^8 m/s
</span>
plug in the values we'll get mass=<span>9.0 x 10-1 kg</span>

5 0
2 years ago
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C)"his refusal to cooperate with the police and name the culprit...resulted in his arrest..."
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3 years ago
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