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3 years ago

Surfaces that touch food are called

Chemistry

2 answers:

Artyom0805 [142]3 years ago

7 0

Answer:

The correct answer is option C.

Explanation:

Surface area is defined as area of the surface or the uppermost layer of an object.

Temperature danger zone is defined as temperature range in which food borne bacteria multiplies its elf at very fats rate.

Food contact surfaces is defined as those surfaces which comes in contact of food. For example: spoons. knives etc.

Ad libitum [116K]3 years ago

4 0

Answer:

C.food-contact surfaces.

Explanation:

Surfaces that touch food are known as food contact surfaces. These surfaces are mostly equipments like spoons, knives, stock pots e.t.c. Special care should be applied to such surfaces in order to avoid health issues. Food contact surfaces must be properly and duly sanitized from time to time.

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For the following reactions, write a balanced equation using half-reactions and calculate the voltage to be expected.

Iteru [2.4K]

a) $2Na(s) +2H_2O(I)$ → $2Na^+(aq) + OH^-(aq)+ H_2(g)$

b) $2Ag (s) +2H^(aq)$ → $2 Ag^+ (aq) +H_2(g)$

<h3>What are half-reactions?</h3>

The half-reaction method is a way to balance redox reactions. It involves breaking the overall equation down into an oxidation part and a reduction part.

$2Na(s) +2H_2O(I)$ → $2Na^+(aq) + OH^-(aq)+ H_2(g)$

$E^0 cell = E^0 (reduction) - E^0 (oxidation)$

= $E^0(\frac{H_2O}{H_2}, OH^-) -E^0(Na^+/Na)$

= -0.83 - (-2.71) =1.88V

$2Ag (s) +2H^(aq)$ → $2 Ag^+ (aq) +H_2(g)$

$E^0cell$ = $E^0(H^+/H_2) -E^0(Ag^+/Ag)$

$E^0cell$ =-0. - (0.8) =-0.8V

Learn more about the half-reactions here:

https://brainly.in/question/18053421

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2 years ago

How many molecules are there in 322 grams of Cu(NO3)2

mr_godi [17]

<span>cu=1*63g=63g
n=2*14g=28g
o=6*16g=96g
total=187g/mol
122(1 mol/187)(6.02*10^23)= 3.92*10^23 </span><span>
</span>

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3 years ago

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katrin [286]

The correct answer is: [C]: " mg " {"milligrams"} .
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masha68 [24]

Explanation:

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Marat540 [252]

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