Answer:
alkali metals, alkaline earth metals, transition metals, basic metals, lanthanides (rare earth elements), and actinides.
Explanation:
Answer. Answer: Scientists study how things work, while engineers create new things
Answer:
It all started with the big bang.
The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now (and it could still be stretching).
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Answer:</h3>
0.073 M
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Explanation:</h3>
We are given;
Initial concentration, M1 of NaOH solution as 0.660 M
Initial volume,V1 of solution as 50.0 mL
Final volume,V2 of solution after dilution as 450 mL
We are required to calculate the final concentration, M2.
We are going to use the concept on dilution.
- Dilution involves addition of solvent to a concentrated solution to make it dilute.
- This results to an increase in the final volume of solution and a decrease in the concentration of the solution.
Using dilution formula,
M1V1 = M2V2
M2 = M1V1 ÷ V2
= (0.660 M × 50.0 mL) ÷ 450.0 mL
= 0.0733 M
= 0.073 M
Thus, the final concentration of the solution is 0.073 M
You have to use avagados number... so toy take your starting number and multiple by 1/avagados number which is like 6.002^23 and that will equal your number of males... avagado always associates with moles... look up that exact number though bc I cant remember it