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ale4655 [162]
3 years ago
7

A cube has an edge length of 9 cm .

Chemistry
1 answer:
Angelina_Jolie [31]3 years ago
5 0

Answer:

9^3 i think so like 279

Explanation:

blah

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Which group (give the number) is characterized by 5 valence electrons in the configuration<br> s²p3?
Ivahew [28]
<h3>Answer:</h3>

Group 5A

<h3>Explanation:</h3>
  • Elements in the periodic table are arranged into columns known as groups and rows known as periods.
  • Elements in the same group share similar chemical properties.
  • For example, elements in group 5A have five valence electrons with the most high energy level with a configuration of s²p³.
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How many moles in one gram of Calcium ??
kirill [66]

Answer:

0.0249 moles in 1 g of Ca

Explanation:

Let's think in the molar mass of Ca.

Ca = 40.08 g/mol

So 1 mol weighs 40.08 grams, or in the opposite 40.08 grams is the weigh of 1 mol

The rule of three will be:

40.08 g are contained in 1 mol

1 g may be contained in (1 . 1) / 40.08 = 0.0249 moles

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rjkz [21]

Answer:

91kj/mol;no

Explanation:

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3 0
2 years ago
A scientist would build a model to observe what
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Beginning with hydrogen how do the chemical elements form?
hodyreva [135]
Hydrogen is the answer
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