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Fittoniya [83]
2 years ago
14

How can you describe the location of hafnium on the periodic table? Choose all that apply.

Chemistry
1 answer:
Marrrta [24]2 years ago
4 0

A and D is the correct answer for this question.

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svp [43]

Answer:

Your answer would be E

Explanation:

4 0
2 years ago
Ice floats in water because it _____. is less dense than water contains more oxygen than water has a higher pH than water has mo
Tpy6a [65]

Answer:

it is less dense than water

Explanation:

odyssey ware

3 0
2 years ago
What is the mass, in grams, of a pure gold cube that has a volume of 4.20cm^3 ?
Rama09 [41]
WOW, I gave you the answer, i used a periodic table, i got the mass of gold and i linked a helpful link my teacher gave me because we used it in a lab once.
5 0
3 years ago
The heat of vaporization for water is 40.7 kJ/mol. How much heat energy must 150.0 g of water absorb to boil away completely? Us
ollegr [7]

Answer:

i picked b

Explanation:

but its based on your own opinion, good luck.

6 0
2 years ago
Here's the question ~
Lelechka [254]

Using the Rydberg formula, the spectral line of H - atom is suitable for this purpose is Paschen, ∞ → 3.

  • Using the Rydberg formula;

1/λ = RH(1/nf^2 - 1/ni^2)

Given that;

λ = wavelength

RH = Rydberg constant

nf = final state

ni = initial state

  • When final state = 3 and initial state = ∞

Then;

1/λ =  1 × 10^7 m-1 (1/3^2 - 1/ ∞^2)

1/λ =  1 × 10^7 m-1 (1/3^2 )

λ = 900 nm

Hence, the correct answer is Paschen, ∞ → 3

Learn more about the Rydberg formula; brainly.com/question/17753747

3 0
2 years ago
Read 2 more answers
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