Question

Please tell me fast ​

Answer 1

Step-by-step explanation:

Mass of solute A = 2 g

Mass of solvent water = 18 g

Mass percent of solute = ( Mass of solute / Mass of solution ) * 100

= ( 2 / ( 2 + 18 ) ) * 100

= ( 2 / 20 ) * 100

= 0.1 * 100

= 10

Therefore , mass percent of solute = 10 %

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Answer 2

Answer:

72 as the exterior angle is 108 degree so

so,

total angle of triangle =180 degree

therefore x= 180-108

=72

Step-by-step explanation:

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