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3 years ago

what events and experiences lead bruno to gradually give up some of his innocence and see things differently

Chemistry

1 answer:

Sergio039 [100]3 years ago

3 0

Answer:

The events of Bruno seeing the young boy in the concentration camp, slowly seeing his father’s evil side come out, and having his sister explain to him what was really happening; all lead Bruno to gradually see what was really going on.

Explanation:

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The oxidation number of Na in NaCl a. 0 b. -1 c. +1 d. -2 e. +2

Dahasolnce [82]

NaCl:

Na = + 1

Cl = - 1

hope this helps!

4 0

3 years ago

Andi performs the calculation that is shown below.

rodikova [14]

Answer: 3.59

Explanation:

(2.06)(1.743)(1.00)

2.06 × 1.743 × 1.00

= 3.59058

Two of the multiplied digits are represented in 3 significant figures. Therefore, for correct representation, the result of the product should be written to three significant figures.

3.59058 to 3 significant figures:

First three digits = 3.59

Fourth digit '0' is less than 5, and thus rounded to 0 with other succeeding digits

Therefore, (2.06)(1.743)(1.00) to 3 significant figures equals :

3.59

3 0

3 years ago

The _____________ is the temperature at which a substance changes from solid to liquid; ________________ is the temperature at w

Aleksandr-060686 [28]

The _____melting point________ is the temperature at which a substance changes from solid to liquid; _______boiling point_________ is the temperature at which a substance changes from a liquid to as gas; _______vapourisation_________ is the process by which atoms of molecules leave a liquid and become a gas.

5 0

4 years ago

An ideal reversible heat pump is taking heat from the outside air at -14.0°c and discharging it into the house at 20.0°c. what i

just olya [345]

the coefficient of performance of this heat pump is 8.61.

The air source heat pump converts heat from the ambient air into a low-temperature liquid refrigerant. The pump compresses the liquid to raise its temperature using power. To release the heat it had been holding, it then condenses back into a liquid. Your underfloor heating system or radiators get heat.

coefficient of performance -The usable heating or cooling delivered to work (energy) needed ratio, also known as the coefficient of performance, or COP, of a heat pump, refrigerator, or air conditioning system. Higher efficiency, less energy (power) usage, and thus reduced operational costs are all related to higher COPs.

temperature of cold reservoir = -14.0°C

Tc = [ 273+ (-14.0)]K = 259K

temperature of hot reservoir = 20°C

Th = [ 273+ (20)]K = 293K

therefor, formula for coefficient of performance

Cop = Th/Th-Tc

Cop = 293/34

Cop = 8.61

to learn more about heat pump go to - brainly.com/question/3150928

#SPJ4

4 0

2 years ago

Tin metal reacts with hydrogen fluoride to produce tin (ll )fluoride and hydrogen gas according to the balanced equation. Sn(s)+

ladessa [460]

Answer:

1.263 moles of HF

Explanation:

The balance chemical equation for given single replacement reaction is;

Sn + 2 HF → SnF₂ + H₂

Step 1: <u>Calculate Moles of Tin as;</u>

As we know,

Moles = Mass / A.Mass ----- (1)

Where;

Mass of Tin = 75.0 g

A.Mass of Tin = 118.71 g/mol

Putting values in eq. 1;

Moles = 75.0 g / 118.71 g/mol

Moles = 0.6318 moles of Sn

Step 2: <u>Find out moles of Hydrogen Fluoride as;</u>

According to balance chemical equation,

1 mole of Sn reacted with = 2 moles of HF

So,

0.6318 moles of Sn will react with = X moles of HF

Solving for X,

X = 0.6318 mol × 2 mol / 1 mol

X = 1.263 moles of HF

8 0

3 years ago