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Leto [7]
3 years ago
7

In the modern periodic table, which of the following represents the last pair of elects for which Newlands' Law of Octaves would

hold true?
1. AI and GA
2. AI and SI
3. NE and AR
4. MG and CA
Chemistry
1 answer:
Paladinen [302]3 years ago
3 0

Answer: Mg and Ca

Explanation:

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Rutherford quiz! (1 short question)
Ira Lisetskai [31]

Answer:

False

Explanation:

My opinion is False and im not sure

8 0
3 years ago
Which of the samples described below contains the FEWEST atoms? No calculation is needed to answer this question.
Monica [59]

Hello!

To do this, use the molar mass. This is how much a mole of an atom weighs. A mole is 6.02214076×10²³ atoms.

Molar masses of:

Se: 78.96 g/mol

Cu: 63.546 g/mol

Ba: 137.327 g/mol

Now, the element with the highest molar mass will have the fewest atoms. This is because the element weighs more, so therefore for the same amount of mass, there will be less of the element needed to reach that mass.

Therefore, 10g of Ba would have the fewest number of atoms.

Hope this helps!

6 0
3 years ago
How many molecules are in 4.44 mol of CF4? 4.44 mol CF4 =
notsponge [240]
Mark Brainliest please

Answer

Molecular Mass for CF4 = 88.004349 Da
4 0
3 years ago
Read 2 more answers
Brainliest grind of 2014i-
aksik [14]

Answer:

IM just too pogchamp

Explanation:

5 0
3 years ago
Write the ions present in a solution of k3po4. express your answers as chemical formulas separated by a comma. offset subscripts
olga55 [171]
K₃PO₄ → 3K⁺ + PO₄³⁻

PO₄³⁻ + H₂O ⇄ HPO₄²⁻ + OH⁻

HPO₄²⁻ + H₂O ⇄ H₂PO₄⁻ + OH⁻

H₂PO₄⁻ + H₂O ⇄ H₃PO₄ + OH⁻

K⁺, PO₄³⁻, HPO₄²⁻, H₂PO₄⁻, OH⁻
5 0
3 years ago
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