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professor190 [17]
3 years ago
8

Question 4

Chemistry
2 answers:
xenn [34]3 years ago
8 0

Answer:

there are 19 neutrons

ludmilkaskok [199]3 years ago
6 0
There are 19 neutrons shown In this answer If you need more help search it up on the web
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Someone pls help me I will make you brain
Andrei [34K]

The phenomenon is known as the Greenhouse Effect.

When the sun's energy reaches the Earth, some is reflected into space, but the rest is absorbed by gases and warms the atmosphere. The phenomenon is known as the Greenhouse Effect.

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3 years ago
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How do you convert a temperature from Celsius to kelvin?
kkurt [141]

Answer:

Kelvin = Celsius + 273.15

Explanation:

Instead of 273.15 you can use just 273 as well

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3 years ago
Which instrument is most often used to measure acid volume before a titration begins?
Darya [45]

<span>Good Morning!
 
To measure the volume of an acid we use in the laboratory an instrument called burette (a). This instrument is used to calculate the volumes of chemical solutions. At first glance, these tools may be confused with syringes, but have different functions.
 
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4 years ago
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Waves transport<br>over distances.<br>A. liquids<br>B. gases<br>C. energy<br>D. solids​
Aleksandr [31]
Liquids transports over distances.
4 0
3 years ago
The osmotic pressure of a solution formed by dissolving 75.0 mg of aspirin (c9h8o4) in 0.250 l of water at 25 °c is ________ atm
Igoryamba

Answer is: the osmotic pressure of aqueous solution of aspirin is 0.0407 atm.

m(C₉H₈O₄) = 75 mg ÷ 1000 mg/g = 0.075 g.

n(C₉H₈O₄) = 0.075 g ÷ 180.16 g/mol.

n(C₉H₈O₄) = 0.000416 mol.

c(C₉H₈O₄) = 0.000416 mol ÷ 0.250 L.

c(C₉H₈O₄) = 0.00167 M; concentration of solution.

T(C₉H₈O₄) = 25°C = 298.15 K; temperature in Kelvins.

R = 0.08206 L•atm/mol•K; universal gas constant.

π = c(C₉H₈O₄) • T(C₉H₈O₄) • R.

π = 0.00167 mol/L • 298.15 K • 0.08206 L•atm/mol•K.

π = 0.0407 atm.


3 0
4 years ago
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