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IRINA_888 [86]
2 years ago
6

7) Which element would have the lowest first ionization energy? * Li Be Na Mg

Chemistry
2 answers:
olga_2 [115]2 years ago
7 0

Answer:

Dos quintos al cuadrado dividido cinco medios a la menos 1.

Explanation:

Vera_Pavlovna [14]2 years ago
6 0

Answer:

Na which is sodium.....

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What is the formula for the ionic compound of strontium and chlorine?
Leno4ka [110]
The formula is SrCl2. hope this helps
8 0
3 years ago
Select the compounds from the list below which are insoluble in water
natulia [17]

Answer:

Insoluble in water:

  • BaSO4
  • PbCl2
  • Cu2O
  • AgBr

Explanation:

Water turns out to be a good solvent for ionic substances, or in general, polarized covalent substances. On the other hand, it is not a good solvent for non-polar substances, these being the vast majority of covalent substances.

5 0
3 years ago
Find the weight of HNO_3 present in 20ml, 0.30 N
yanalaym [24]

Answer:

mass of HNO₃ = 0.378 g

Explanation:

Normality = Molarity * number of equivalents

Molarity = Normality/number of equivalents

normality of HNO₃ = 0.30 N, Volume = 20 mL

HNO₃ ionizes in the following way:

HNO₃(aq) ----> H⁺ + NO₃⁻

Therefore, number of equivalents for HNO₃ is 1

molarity of HNO₃ = 0.30/1 =0.30 mol/dm³

Using the formula, molarity = number of moles/volume in liters

number of moles = molarity * volume

Number of moles of HNO₃ = 0.30 mol/dm³ * 20ml * 1 dm³ /1000 mL

number of moles = 0.006 moles

From the formula, mass = number of moles * molar mass

molar mass of HNO₃ = 63.0 g/mol

mass = 0.006 * 63

mass of HNO₃ = 0.378 g

6 0
3 years ago
Blood ph is kept near a value of 7.3 - 7.5 because of
Ede4ka [16]

Answer:  Neutral Value

Explanation:  pH of the blood is maintained at 7.0 to 7.5that is neutral value.

This is because if the pH of the is lower than the maintained value then it will become acidic .

Acidic pH can cause the medical urgency known as acidosis leading to vomiting, diarrhea etc.

If the pH becomes higher, then the blood will become basic in nature and it can also leas to the death of the person.

That is why the pH of the blood is maintianed at neutral value of 7.0 to 7.5

5 0
3 years ago
Read 2 more answers
Nothing sus please haha<br> http://quizprank.xyz/message.php?id=n8q76jgf
SVEN [57.7K]

Answer:

lol thanks for the point btws! i really needed them for my math test questions have a good day btw! good vibes!

Explanation:

8 0
3 years ago
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