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vagabundo [1.1K]
3 years ago
9

What do you call the meetings of two planets/objects as seen from the earth? hurrry ASAP!!!!!

Chemistry
1 answer:
RoseWind [281]3 years ago
6 0

Answer:

It's called "Great conjunction"

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How many moles would there be in 500,000,000,000 atoms of silver? Show your calculation
muminat

Answer: 3.01 * 10^35

Explanation:

500,000,000,000 * 6.02 * 10^23

4 0
2 years ago
____H3PO4 + ____ KOH --> ______K3PO4 + ____H2O can someone please balance that chemical equation?
Murrr4er [49]

Answer:

H3PO4 + 3KOH ----> K3PO4 + 3H2O

Explanation:

The valency of K element is + 1 while that of PO4 compound is -3

Hence, at least 3 K atoms are needed to combine with PO4 to form K3PO4 compound.

Hence, the revised equation will be

H3PO4 + 3KOH ----> K3PO4 + 3H2O

Now, the number of atoms and charges of each element is a given equation are equal on both the left and right hand side.

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2 years ago
What is the mass of one mole of carbon-12?
velikii [3]

Answer:

Hello

12 grams

The mass of one mole of carbon-12 atoms is 12 grams.

Hope it helps You.....

Explanation:

4 0
3 years ago
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Hydrogen, hydrogen ion (H+) is associated with acids
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It is becoming less expensive to screen blood samples for DNA. Certain diseases have a genetic basis. What is a possible ethical
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