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EleoNora [17]
3 years ago
10

Identify two metalloids that have the same number of electrons shells krypton

Chemistry
1 answer:
disa [49]3 years ago
3 0

Answer;

Ge and As.


Explanation;

Elements Ge and As belong in the same period as krypton.

Each row of the periodic table is called the period.

Elements in each period have the same number of electron shells.

These elements in the same period do not have similar properties- the properties change greatly across every period. Krypton is in period four therefore all the elements in period 4 have four electrons shells.

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What does intrinsic mean in science
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An intrinsic property is independent of how much of a material is present and is independent of the form of the material, one large piece or a collection of small particles. Intrinsic properties are dependent mainly on the fundamental chemical composition and structure of the material.

5 0
3 years ago
Every atom's goal is to get ________ electrons in its valence shell.
sdas [7]
Every atom tends to form configuration of noble gas , with the 8 electrons in valence shell.
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3 years ago
What is the final temperature when 60.2 g of water at 72.4°C is mixed with 20.3 g of water at 34.4°C? (The specific heat of wate
Murljashka [212]

Answer:

72.3 c

Explanation:the celcuis would over power the fairnheight

5 0
3 years ago
Us
MrRissso [65]

Answer:

24.9%

Explanation:

According to this question, mole fraction of NaCl in an aqueous solution is 0.0927. This means that the mole percent of NaCl in the solution is:

0.0927 × 100 = 9.27%

Let's assume that the solution contains water (solvent) + NaCl (solute), hence, the mole fraction of water will be;

100% - 9.27% = 90.73%

THEREFORE, it can be said that, NaCl contains 0.0927moles while H2O contains 9.073moles

N.B: mole = mass/molar mass

Given the Molar Mass

NaCl: 58.44 g/mol

H2O: 18.016 g/mol

For NaCl;

0.0927 = mass/58.44

mass = 0.0927 × 58.44

5.42g

For H2O;

9.073 = mass/18.016

mass = 9.073 × 18.016

= 16.35g

Total mass of solution = 16.35g + 5.42g = 21.77g

Mass percent of NaCl = mass of NaCl/total mass × 100

% mass of NaCl = 5.42g/21.77g × 100

= 0.249 × 100

= 24.9%

5 0
3 years ago
Read 2 more answers
1. If I have 3 identical books that all have a length of 25cm, a
Ksenya-84 [330]

Answer:

12,375 cm³

Explanation:

v=l×w×h

Since there are 3 books the equation would then be

v=3(l×w×h)

v=3(25×15×11)

v=3(4,125)

v=12,375 cm³

5 0
3 years ago
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