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padilas [110]
3 years ago
5

It is not advisable to wear clothes made of synthetic fiber while working near fire because?

Chemistry
1 answer:
Svetradugi [14.3K]3 years ago
8 0

Answer:

They catch fire very easily.

Explanation:

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If the theoretical yield of RX is 56.0 g , what is it’s percent yield ?b
Angelina_Jolie [31]
<span>the theoretical yield which is the expected yield and the actual yield obtained are not always the same. therefore percent yield is calculated which shows how much of the percentage of the theoretical yield is actually obtained.
the theoretical yield = 56.0 g 
actual yield = 47.0 g 
percent yield = actual yield / theoretical yield x 100 %
percent yield = 47.0 / 56.0 x 100% = 83.9 %
percent yield = 83.9 %</span>
8 0
3 years ago
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Explain the difference between weathering and erosion.
yanalaym [24]

Answer:

So, if a rock is changed or broken but stays where it is, it is called weathering. If the pieces of weathered rock are moved away, it is called erosion.

6 0
2 years ago
The emission spectrum of hydrogen is shown below. What do the lines in the
NISA [10]

Answer:

A

Explanation:

Same air has special carakteristik features

7 0
2 years ago
Explain how to use an acid-base indicator to determine pH
Annette [7]
Acid-base indicator changes color based on pH.

drop some in a solution n watch the color changes. different indicators show different colors at different pH. they usually have standard colors for comparison.
7 0
3 years ago
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A sample of methane occupies a volume of 174.0 mL at 25 C and exerts a pressure of 1030.0 mmHg if the volume of the gas is allow
PolarNik [594]

Answer:

The pressure will be 0,37 atm.

Explanation:

We use the Boyle Mariotte´s formula,where for a given mass of gas, at constant temperature, the pressure and temperature vary inversely proportionally. We see here that the initial and final temperature does not vary (298K).

We convert the unit Celsius into Kelvin (0 ° C = 273K) and the unite mmHg into atm (760mmHg=1 atm):

25°C= 25+273=298K   ; (1060mmHgx 1 atm)/760mmHg)=1,39 atm.

We convert unit of volume from ml to L: 174/1000=0,174L and 650/1000=0,650L

P1xV1= P2xV2

1,39 atm x 0,174L =P2 x0,650L

P2= (1,39 atm x 0,174L)/0,650L= 0,37 atm

4 0
3 years ago
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