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krok68 [10]
3 years ago
11

What direction are the groups (families) in the periodic table?

Chemistry
2 answers:
Soloha48 [4]3 years ago
6 0

Answer:

left

Explanation:

Troyanec [42]3 years ago
6 0
The answer to the question is left
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30)
Feliz [49]

Answer:

D has to be based on facts so d would be the answer and idea that can only be proven true those are facts not hypothesis or guesses

Explanation:

based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world."

6 0
2 years ago
How many base units exist?
Oksi-84 [34.3K]

Answer:

7

Explanation:

second

metre

kilogram

ampere

kelvin

mole

candela

4 0
3 years ago
The theater director offered every member of the drama one vote for which play they preferred to perform. The director found tha
irakobra [83]
<h2>ANSWER:</h2>

Yes, in this group both events "Oddems Family" and "Thirteenth Night" are mutually exclusive.

<h3>Explanation:</h3>

Mutually exclusive is an statistical term which means the probability of occurrence of two separate event at the same time is zero. It means two events can not be occurred simultaneously.

For example, if we roll the deck ant the probability of coming 1 and 6 at the same time is zero and both events do not depends upon each others occurrence.

Hence only one drama can run in theater at one time. So they are mutually exclusive events.

3 0
3 years ago
Read 2 more answers
The theoretical yield for CuCO3.Cu(OH)2+2h2SO4 ®2CuSO4+2H2O+3CO2
olga nikolaevna [1]

Answer:

bxnhdjxjdjvxjsj sbdhhxhchdbd

5 0
3 years ago
Can someone help Plz
Marrrta [24]

Answer: A. 1.60 liters

Explanation:

2Na_2O_2+2CO_2\rightarrow 2Na_2CO_3+O_2

As can be seen from the balanced chemical equation, 2 moles of CO_2 produce 1 mole of O_2.

According to Avogadro's law, every 1 mole of the gas occupies 22.4 liters at STP.

Thus 2 moles of CO_2 occupies 22.4\times 2=44.8L at STP and produce 1 mole of O_2 i.e. 22.4 L

44.8 L of CO_2 will produce 22.4 L of O_2

Thus 3.20L of CO_2 will produce \frac{22.4}{44.8}\times 3.20=1.60L



6 0
3 years ago
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