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Lubov Fominskaja [6]
3 years ago
8

In this periodic table, which type of element is shown in green boxes?

Chemistry
1 answer:
serg [7]3 years ago
3 0

The correct answer is B. Metalloids

Explanation:

In this periodic table, the green boxes include elements such as Boron (B), Arsenic (As), and Antimony (Sb). All these elements are known in chemistry as semimetals or metalloids. This classification is because these elements cannot be completely classified into metals or non-metals. Moreover, they all display similar properties including some level of conductivity, malleability, and solid-state. According to this, the correct answer is B.

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How many grams of HNO3 are produced when 59.0 g of NO2 completely reacts?
Anettt [7]

Answer:

53.7 grams of HNO3 will be produced

Explanation:

Step 1: Data given

Mass of NO2 = 59.0 grams

Molar mass NO2 = 46.0 g/mol

Step 2: The balanced equation

3NO2 + H2O→ 2HNO3 + NO

Step 3: Calculate moles NO2

Moles NO2 = 59.0 grams / 46.0 g/mol

Moles NO2 = 1.28 moles

Step 4: Calculate moles HNO3

For 3 moles NO2 we need 1 mol H2O to produce 2 moles HNO3 and 1 mol NO

For 1.28 moles NO2 we'll have 2/3 * 1.28 =0.853 moles HNO3

Step 7: Calculate mass HNO3

Mass HNO3 = 0.853 moles * 63.01 g/mol

Mass HNO3 = 53.7 grams

53.7 grams of HNO3 will be produced

3 0
3 years ago
What subatomic particle of the atom has no electric charge
amm1812
Neutrons have no electrical charge.
3 0
3 years ago
To find the atomic mass of a particular atom you need to know
AveGali [126]
The answer is (C) as the definitions states that atomic mass is the number of protons and neutrons.
Hope this helps :).
6 0
3 years ago
What occurs as energy is transferred through a wave?
dolphi86 [110]

Answer:

a,water particles are set in a circular motion

4 0
3 years ago
Read 2 more answers
For snap
eimsori [14]
Molar mass Li2CO3 = 73.89 g/mol
Mol Li2CO3 = 67.5/73.89 =0.91 mol
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3 0
3 years ago
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