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Iteru [2.4K]
3 years ago
6

Suppose you wish to apply SSA to a triangle, in order to find an angle

Chemistry
1 answer:
emmasim [6.3K]3 years ago
8 0
First of all there nothing exists something like SSA congruence criterion, It is SAS Congruence where the sides of a Triangle and the angle between them is exactly same to the other two sides and angle between them of another triangle.

So the correct option is D.

Explanation:

If the Triangle has two sides equal, so the two angles there are equal. Also the other angle be some other definite angle. So

45+x+x=180(Considering definite angle to be 45)
2x=135
x=67.5

So there is only one solution to the triangle.
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What kind of air mass will bring cold, dry weather as it moves toward an area
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Answer:

i think the answer is Continental polar air masses

Explanation:

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2 years ago
If 38.5 grams of potassium react with excess oxygen gas, how many grams of potassium oxide can be produced? 4K + O2 yields 2K2O
Lera25 [3.4K]

Answer:

46.40 g.

Explanation:

  • It is a stichiometric problem.
  • The balanced equation of the reaction: 4K + O₂ → 2K₂O.
  • It is clear that 4.0 moles of K reacts with 1.0 mole of oxygen produces 2.0 moles of K₂O.
  • We should convert the mass of K (38.5 g) into moles using the relation:

<em>n = mass / molar mass,</em>

n = (38.5 g) / (39.098 g/mol) = 0.985 mole.

<em>Using cross multiplication:</em>

4.0 moles of K produces → 2.0 moles of K₂O, from the stichiometry.

0.985 mole of K produces → ??? moles of K₂O.

∴ The number of moles of K₂O produced = (0.985 mole) (2.0 mole) / (4.0 mole) = 0.4925 mole ≅ 0.5 mole.

  • Now, we can get the mass of K₂O:

∴ mass = n x molar mass = (0.5 mole) (94.2 g/mol) = 46.40 g.

6 0
3 years ago
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monitta

Answer:

What do you need help with?

Explanation:

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What motion causes thermal energy?
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Thermal energy causes of motion of

1. mixing water molecules contained in a beaker.

2.<span>molecules in soild liquid and gas phases 

3. mixing </span><span>molecules together 

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3.14<br> What is this in scientific notation
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= 3.14 × 100
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= 3.14
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