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timurjin [86]
3 years ago
12

En que consiste cada familia de la tabla periódica?

Chemistry
1 answer:
Zielflug [23.3K]3 years ago
7 0
English:Each family consist of the same number of valence electrons.

Spanish:
Cada familia consta de la misma cantidad de electrones de valencia
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What volume in milliters would give 12.0 grams of NaOH from a 2.0 M NaOH solution?
zavuch27 [327]

Answer:

V = 150 mL

Explanation:

Hello!

In this case, since the molarity of a solution is computed via:

M=\frac{n}{V}

Whereas we are asked to compute the volume:

V=\frac{n}{M}

Thus, we first compute the moles in 12.0 g of NaOH as its molar mass is about 40.0 g/mol:

n=\frac{12.0g}{40.0g/mol}=0.3mol

Thus, at first instance, the volume liters is:

V=\frac{0.3mol}{2.0mol/L} \\\\V=0.15L

Which in milliliters is:

V=0.15L*\frac{1000mL}{1L}\\\\V=150mL

Best regards!

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3 years ago
What is the best way to eliminate poison ivy?
antoniya [11.8K]
What poison ivy looks like:
Each leaf has 3 little leaflets. It tends to grow off-white berries on the leaves in the early fall, and grows yellow-green flowers in the spring. 

Treating poison ivy:
If you have a rash from poison ivy, it is recommended to rinse your skin off with lukewarm water immediately after you notice the rash. 
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Do not scratch at the rash, as scratching will cause an infection.
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How to kill poison ivy:
If you find the plant, do not pull or burn it. Even if you pull it, it will still grow out of the ground since you did not eliminate the roots of it. Burning it can release <span>urushiol into the air which can be harmful.
</span>It is recommended to use a specialized weed killing spray. Always look at the ingredients in the spray and look for: Triclopyr, which fights through the surface of the plant, and also <span>glyphosate, that helps kill the roots of the plant.
</span>Once you use a spray, it will take 1-2 weeks for it to die. It will eventually turn yellowish-brownish.

Important:
 Poison ivy contains urushiol which can cause allergic reaction.
Burning poison ivy releases urushiol into the air which can also cause allergic reaction and can be harmful. 


4 0
3 years ago
NaCl is classified as...<br><br> An element<br><br> An acid<br><br> A mixture<br><br> A compound
Rufina [12.5K]
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2 years ago
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Nitrogen oxides can only jointly be referred to as NOx
8 0
3 years ago
What is the percent of carbon in carbonate?
Sedaia [141]

Answer:

The percentage of carbon in a 55 % pure sample of carbon carbonate is. (Ca=40, C=12, O=16)

Explanation:

Hope this helps!!!!!!!!!!

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