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zhenek [66]
3 years ago
7

HOW MANY M ARE IN 3.0X105 MM?

Chemistry
1 answer:
erik [133]3 years ago
7 0

The answer to the question is 300meters.

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Which pair of elements form an ionic bond with
KATRIN_1 [288]

Answer:

Yes Both A) KCL and D) HCL are correct...

3 0
2 years ago
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if the same amount of heat is added to 50.0 g samples of each of the metals, which are all at the same temperature, which metal
Salsk061 [2.6K]

The metal which will reach the highest temperature is the metal with the lowest specific heat capacity.

<h3>What is the amount of heat added to each metal?</h3>

The amount of heat Q = mcΔT where

  • m = mass of metal
  • c = specific heat capacity of mateal and
  • ΔT = temperature change

<h3>Temperature change of the metal</h3>

Making ΔT subject of the formula, we have

ΔT = Q/mc

Given that Q and m are the same for each metal,

ΔT ∝ 1/c

We see that the temperature change is inversely proportional to the specific heat capacity.

Since the metals are at the same temperature, the metal which will reach the highest temperature is the metal with the lowest specific heat capacity.

So, the metal which will reach the highest temperature is the metal with the lowest specific heat capacity.

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6 0
1 year ago
A gas sample occupies 2.1 L at a pressure of 101 kPa.
Verizon [17]

Answer:

D) 0.9 L

Explanation:

At constant temperature,

PV = Constant

so,

P1.V1 = P2. V2

101 × 2.1 = 235 × V2

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6 0
2 years ago
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How many grams will be produced
Anni [7]

Answer:

\Large \boxed{\sf 34.2 \ g}

Explanation:

Mole ratio

9:4

1.75:x

Moles of CO₂

\displaystyle \frac{4 \times 1.75}{9} =0.78

Use formula to find mass

\displaystyle moles=\frac{mass}{M_r}

Relative molecular mass of CO₂ = 12 + 16 × 2 = 44

\displaystyle 0.78=\frac{mass}{44}

mass=34.2

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2 years ago
Mendeleev arranged the known chemical elements in a table according to increasing
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Atomic mass. Which is the number of protons and neutrons combined.
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