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Andrej [43]
3 years ago
6

Elements in the first group of the periodic table are

Chemistry
1 answer:
Anna007 [38]3 years ago
6 0

Answer:alkali metals

Explanation:

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How many molecules are in 88g of carbon dioxide?
Volgvan
No of moles= 88/44 =2
therefore no. of molecules =

therefore no.of molecules= 12.046*10^23
8 0
3 years ago
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Pls helppp ASAP I’ll brainlest
My name is Ann [436]

Answer:

The answer is B

Explanation:

Hope that helps

4 0
2 years ago
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To make a 6.50M solution, how many moles of solute will be needed if 12.0 liters of solution are required
avanturin [10]

Answer:

78 moles of the solute

Explanation:

From the question;

  • Molarity of the solution is 6.50 M
  • Volume of the solution is 12.0 L

We want to determine the number of moles needed

We need to know that;

Molarity = Number of moles ÷ Volume

Therefore;

Number of moles = Molarity × Volume

Hence;

Number of moles = 6.50 M × 12.0 L

                             = 78 moles

Thus, the moles of the solute needed is 78 moles

8 0
3 years ago
an ant releases a chemical when it dies, and its fellows then carry it away to the compost heap. apparently the communication is
Alenkinab [10]

The conclusion based on the premises is that communication is highly effective.

<h3>What are pheromones?</h3>

Pheromones are chemical substances that are released by animals and which these animals use to communicate with other animals. Some examples of animals that release or produce pheromones are ants and bees.

The pheromones produced by the ants are used to communicate with other ants.

In the given questions, two premises are given about ants:

Premise 1: an ant releases a chemical when it dies, and its fellows then carry it away to the compost heap.

Premise 2: a healthy and painted with the deadly chemical will be dragged to the funeral heap again and again.

The conclusion based on the above premises is that the communication between ants is effective.

In conclusion, ants use pheromones in communication.

Learn more about pheromones at: brainly.com/question/2169242

#SPJ1

Note that the complete question is given below:

An ant releases a chemical when it dies, and its fellows then carry it away to the compost heap. The communication is highly effective; a healthy and painted with the deadly chemical will be dragged to the funeral heap again and again.

What are the premises and conclusion?

6 0
1 year ago
How many oxygen atoms are in 225g O2
EastWind [94]

Answer:

8.468 x 10^24.

Explanation:

We know from Avogadro’s Law that 1 mol of a gas contains 6.022 x 10^23 molecules.

So, 7.031 mol contains 7.031 x 6.022 x 10^23 = 4.234 x 10^24 molecules. Since oxygen is diatomic, the number of oxygen atoms is 8.468 x 10^24.

This answer comes from quora.com. It is a very good site!

6 0
3 years ago
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