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irinina [24]
3 years ago
14

In the circuit diagram what does the line segment with two circles at the ends represent?

Chemistry
1 answer:
telo118 [61]3 years ago
4 0
I believe it would be a open switch because it is not connected to anything.
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Argue whether this chemical reaction supports or does not support the Law of Conservation of Matter.
Anit [1.1K]

Explanation:

The reaction is as follows:

2Mg(s) + O2(g) ---> 2MgO(s)

and the researcher said that 32 g of MgO was produced.

Stoichiometry:

28 g Mg × (1 mol Mg/24.305 g Mg) = 1.15 mol Mg

15 g O2 × (1 mol O2/15.999 g O2) = 0.938 mol O2

1.15 mol Mg × (2 mol MgO/2 mol MgO) = 1.15 mol MgO

1.15 mol MgO × (40.3044 g MgO/1 mol MgO) = 46.6 g MgO

0.938 mol O2 × (2 mol MgO/1 mol O2) = 1.88 mol MgO

1.88 mol MgO × (40.3044 g MgO/1 mol MgO = 75.6 g MgO

Based on these numbers, the amount of product after the reaction is much less than expected so these results don't seem to support the law of conservation of matter.

4 0
3 years ago
How many grams in 3.4 moles of Neon (Ne)?
Luba_88 [7]

Answer:

60.42 grams

Explanation:

So, neon has a molar mass of 20.18 g/mol , which means that every mole of neon has a mass of 20.18 g so that means three of them is 60.42 grams

!Hope This Helps!

7 0
3 years ago
What are the intermolecular force in glycerin
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4 years ago
The voltage delivered by a primary battery is: _____________
otez555 [7]

Answer:

The voltage delivered by a primary battery is unrelated to its size.

7 0
3 years ago
What are the circular lines on a topographic map called
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Circular lines on topographic map is called Contour lines these lines shown on two dimension map and depict elevation on the ground . the distance of each contour line is set to represent a certain level of elevation with zero being sea level  . mostly map use distance between coutour lines is 10 m 
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