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elixir [45]
3 years ago
5

Two jars are placed inside an insulated box. One jar contains ice water and the other contains hot soup. What will happen to the

two liquids? Question 6 options: Both the hot soup and the ice water will gain heat. The hot soup will gain heat and the ice water will lose heat The hot soup will lose heat and the ice water will gain heat. Both the hot soup and the ice water will lose heat
Chemistry
1 answer:
pickupchik [31]3 years ago
3 0
Answer is: t<span>he hot soup will lose heat and the ice water will gain heat.
</span><span>Heat spontaneously flows from a hotter to a colder body.
</span>The thermal radiation<span> is </span>electromagnetic radiation<span> generated by the </span>thermal motion<span> of </span>charged particles<span> in </span>matter (in this case from the hot soup to the cold water). 
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A chemist must dilute 34.3mL of 1.72mM aqueous calcium sulfate solution until the concentration falls to 1.00mM. He'll do this b
EastWind [94]

Answer:

58.9mL

Explanation:

Given parameters:

Initial volume  = 34.3mL    = 0.0343dm³

Initial concentration  = 1.72mM   = 1.72 x 10⁻³moldm⁻³

Final concentration  = 1.00mM = 1 x 10⁻³ moldm⁻³

Unknown:

Final volume  =?

Solution:

Often times, the concentration of a standard solution may have to be diluted to a lower one by adding distilled water. To find the find the final volume, we must recognize that the number of moles of the substance in initial and final solutions are the same.

   Therefore;

              C₁V₁  =  C₂V₂

where C and V are concentration and 1 and 2 are initial and final states.

        now input the variables;

                      1.72 x 10⁻³ x  0.0343 = 1 x 10⁻³  x V₂

                        V₂ = 0.0589dm³ = 58.9mL

         

4 0
3 years ago
What is the different between a graph representing data that is directly proportional and a graph that is inversely proportional
sesenic [268]
A graph depicting a direct relation is a straight line and usually has positive slope. An inverse relation is a curve, typically concave up with negative slope.
7 0
3 years ago
A saturated solution of manganese(II) hydroxide was prepared, and an acid–base titration was performed to determine its KspKsp a
trapecia [35]

Answer:

10.945 x 10^-4

Explanation:

Balanced equation:

Mn(OH)2 +  2 HCl  -->  MnCl2  +  H2O

it takes 2 moles HCL for each mole Mn(OH)2

Next find the molarity of the Mn(OH)2 solution

= (1 mole Mn(OH)2 / 2 mole HCl)  X (0.0020 mole HCl / 1000ml) X (4.86 ml)    

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this is now dissolved in (70 + 4.86)  =  74.86 ml or 0.07486 L

thus [Mn(OH)2]  =  4.86 x 10^-3 mole / 0.07486 L  =  0.064921 M

Ksp =  [Mn2+][OH-]^2  =  4x^3  =  4(0.064921)^3  = 10.945 x 10^-4

6 0
3 years ago
There are two types of circuits we can make and they are ...
erma4kov [3.2K]
They are

parallel circuit and series circuit
4 0
3 years ago
Chemists use letters of the alphabet as ____ for the elements.
d1i1m1o1n [39]

Answer:

The symbol is the right answer.

Explanation:

The “ Symbol” is the correct answer because chemist uses the letters of the alphabet to denote the element. For instance, the element oxygen is denoted by the letter of the alphabet “O”, the hydrogen is denoted by the letter of alphabet “H”, Boron is denoted by the letter of alphabet “B”, etc. Here these are the examples that use one letter but there are other elements that use more than 1 letter as the symbol. For example, the Chlorine is represented by the Cl.

8 0
3 years ago
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