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Tom [10]
1 year ago
9

Help please giving brainliest!

Chemistry
1 answer:
Alenkinab [10]1 year ago
4 0
Answer:

Temperature and volume are directly related.

The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure. :)
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Acetaminophen (C8H9NO2) is the active ingredient in many nonprescription pain relievers. Each tablet contains 500 mg of acetamin
ohaa [14]
1) Molar mass C8H9NO2

Element    Atomic mass    # of atoms   mass
                       g/mol                                  g
C               12                         8               12*8 = 96
H                 1                         9                1*9 =    9
N               14                         1               14*1 = 14
O               16                        2                16*2 = 32

                              molar mass =   96 + 9 + 14 + 32 = 151 g/mol

2) Number of mols in a tablet

# of moles = mass / molar mass = 0.500 g / 151 g/mol = 0.003311 moles

3) 3 doses * 2 tablets * 0.003311 moles / tablet = 0.020 moles
7 0
2 years ago
Which type of region would be most likely to support chemical weathering?
fiasKO [112]

Answer: the answer is A

Explanation:

4 0
1 year ago
Read 2 more answers
Light travels at a rate of 3.00 x 10^8 m/s. It takes light 8.30 min to travel from the surface of the sun to the earth. What is
bija089 [108]

Answer: The distance of the earth from the sun is 1.494\times 10^{11}m

Explanation:

Speed of light = 3.00\times 10 ^8 m/s

Time taken to travel from sun to earth = 8.30 mins = 8.3\times 60=498sec    (1min=60 s)

As we know ; Speed is defined as the distance travelled per unit time.

Distance=speed\times time

Hence distance between sun and earth =3.00\times 10^8m/s\times 498s=1.494\times 10^{11}m

Thus the distance of the earth from the sun is 1.494\times 10^{11}m

7 0
3 years ago
This is my first question on Brainly, Can someone explain Molar mass to me? I am not very good with it..
suter [353]
Hey,
A mole is a unit of measure that helps us compare particles of any given substance and its mass. ... The molar mass, also known as molecular weight, is the sum of the total mass in grams of all the atoms that make up a mole of a particular molecule. The unit used to measure is grams per mole.
5 0
3 years ago
What are deltaTb and deltaTf for an aqueous solution that is 1.5g nacl in 0.250kg h2o? Given Kb=0.51 C/m and kr=1.86 C/m
bulgar [2K]

Answer:

T_f for given question is 2.79 and T_b is 0.52

\Delta T_b = I \times K_b \times m {i- vant hoff’s constant ; Kb- constant ; m molarity }

M = no. of moles of the solute present in one kg of solution

Let the weight of amount of solute be “w” and its molecular mass be “M”

Let the mass of the solvent in the given question be “x”

\Delta T_b = I \times K_b \times (w/M)/ x

\Delta T_b = I \times K_b \times w/Mx

\Delta T_b = 1 \times 0.51 \times1.5/(0.250 \times 58.44) = 0.052

\Delta T_f = M \times K_f = 1.86 \times 1.5 = 2.79

4 0
3 years ago
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