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makkiz [27]
3 years ago
15

A candle is placed outside of the center of curvature for a concave mirror.

Chemistry
1 answer:
Marysya12 [62]3 years ago
8 0
The person above is trying to give you a virus
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Gold has a density of 19.32 is this a chemical change or physical change
forsale [732]

Answer:

chemical change it is melted down

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3 years ago
What effect does rapid exhalation of CO2 during exercise have on the concentration of H2CO3 in the blood?
BARSIC [14]

If there is a constant loss of CO_{2}~(carbon~dioxide) the concentration of H_{2} CO_{3}~(carbonic~acid) will be affected and decrease since CO_{2} is a main component of H_{2}CO_{3}.


Hope it helped,


BioTeacher101

3 0
3 years ago
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How many grams of water can be produced when 11.7 moles of ethane (C2H6) react with excess oxygen gas?
Elina [12.6K]

Answer: 631.8 g

Explanation:

2C_2H_6+7O_2\rightarrow 4CO_2+6H_2O

It can be seen from the balanced chemical equation, 2 moles of ethane reacts with 7 moles of Oxygen gas to produce 4 moles of carbon dioxide and 6 moles of water.

Ethane is the limiting reagent as it limits the formation of product.

Thus, if  2 moles of ethane produce 6 moles of water.

11.7 moles moles of ethane produce=\frac{6}{2}\times 11.7=35.1 molesof water.

Mass of water= no of moles\times Molar mass

Mass of water= 35.1\times 18g/mol= 631.8 g

4 0
3 years ago
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What is the application of Complexometric titration? ​
PtichkaEL [24]

Explanation:

Complexometric titration (sometimes chelatometry) is a form of volumetric analysis in which the formation of a colored complex is used to indicate the end point of a titration. Complexometric titrations are particularly useful for the determination of a mixture of different metal ions in solution.

hope it will help u ✌️

7 0
3 years ago
Explain the three ways that machines can make work easier
mr Goodwill [35]
1. they work ways faster
2. you don't need 100 people making the same thing at once
3. its a better chance of not getting an injury
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3 years ago
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