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V125BC [204]
2 years ago
15

To make lemonade Erica dissolved 30 g of sugar in a certain amount of water. By what amount is the mass of water likely to incre

ase after the sugar dissolves?
A. 0 g
B. 10 g
C. 15 g
D. 30 g
Chemistry
1 answer:
Brrunno [24]2 years ago
4 0

Answer:

D. 30 g

Explanation:

Conversion of mass ensures that though the sugar may appear gone the particles remain and will only add onto the original liquid

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Explanation:

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How GM food are produced?​
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3 0
3 years ago
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An air compressor takes atmospheric air (think about what pressure it is at) and pressures it up to 68 (psig). In the process, i
Aleks [24]

Answer:

5.19 m³  

Explanation:

Data Given:

initial Pressure P1 = atmospheric pressure

Reported atmospheric pressure =  14.696 psi

Final pressures P2 =  68 psi

initial Temperature T1 =  26 °C

final Temperature T2 =  48 °C

initial Volume V1= 13 m³

final Volume V2 = ?

Solution:

Formula will be used

                    P1 V1 / T1 = P2 V2 / T2

To calculate volume rearrange the above formula

                   V2 = (P1 V1) T2 / T1 P2 . . . . . . . .(1)

put values in equation 1

                  V2 = (14.696 psi x 13 m³) 48 °C / 26 °C x 68 psi

                  V2 = (191.05 psi m³) 48 °C / 1768 °C psi

                  V2 = (9170.3  psi m³ °C / 1768 °C psi

                  V2 = 5.19 m³

So, final volume is 5.19 m³                

7 0
3 years ago
Calculate the concentration of an anthracene solution which produced a fluorescence intensity ( I ) of 775 when the irradiance o
Kay [80]

Answer:

The concentration of an anthracene solution is  c = 3.560 *10^{-5}M

Explanation:

From the question we are told that

       The incident beam P_o is =1532

         The fluorescence intensity is  I = 775

          The length of the medium is b = 0.875 cm

         The molar extinction coefficient is  \epsilon = 9.5 *10^3 M^{-1} cm^{-1}

          The proportionality  constant k = 0.30

 

According to Lambert law the Absorbance of the anthracene solution is mathematically represented as

              A = log (I_O/I)

Where I_o =P_o

and A  is the  Absorbance

    Substituting value

                A = log( (1532)/(775))

                  =0.2960

Generally beers law can be represented mathematically as

                   A = \epsilon c l

where c is the concentration of an anthracene solution

Making c the subject of the formula

          c = \frac{A}{cl}

Substituting  0.875 cm for length = b ,

We have  

            c = \frac{0.2960}{9.5*10^{3} * 0.875}

              c = 3.560 *10^{-5}M

             

6 0
3 years ago
A 4.52 l sample of nitrogen gas at a temperature of −25°c has a pressure of 723 mm hg. what will be the volume of this sample at
LenKa [72]
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8 0
3 years ago
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