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natka813 [3]
3 years ago
13

Which of the following statements about biodiversity is TRUE?

Chemistry
1 answer:
bazaltina [42]3 years ago
7 0
Answer: B More biodiversity -> Better chance for an ecosystem to sustain itself
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How to find standard entropy in chemistry​
Ierofanga [76]

✦ ✦ ✦ Beep Boop - Blu Bot! At Your Service! Scanning Question . . . Code :

               Green! Letters and Variables Received! ✦ ✦ ✦

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Answer:

The entropy of a substance can be obtained by measuring the heat required to raise the temperature a given amount, using a reversible process . The standard molar entropy, So, is the entropy of 1 mole of a substance in its standard state, at 1 atm of pressure. (Below are listed tips)

- At absolute zero (0 K), the entropy of a pure, perfect crystal is zero.

- The entropy of a substance can be obtained by measuring the heat required to raise the temperature a given amount, using a reversible process.

- The standard molar entropy, So, is the entropy of 1 mole of a substance in its standard state, at 1 atm of pressure.

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8 0
3 years ago
Why do liquids flow but solids dont
taurus [48]
Liquids flow because its particles can move over each other.  The particles have freedom to move and they will keep moving until it takes the shape of its container. 

Solid particles are rigid and tightly packed, they cannot move, so it does not flow.
5 0
3 years ago
Which of the following is true for all chemical reactions
motikmotik
Conservation of mass. The mass that reacts must equal the mass of the products.
6 0
4 years ago
A researcher dispenses distilled deionized water from a 20-ml volumetric pipet into an empty 8.4376 g weighting bottle. If the t
bonufazy [111]

As given that some volume of water has been dispensed say "x mL"

The initial weight of bottle =8.4376 g

The final weight of bottle + water =28.5845 g

So weight of water transferred = 28.5845 g - 8.4376 g = 20.1469 g

Now there is a relation between density, mass and volume

density = mass / volume

Therefore

Volume = mass / density

So volume of water dispensed = mass dispensed / density =20.1469 g / 0.9967867 g/ml.

Volume of water = 20.2118467 mL

 

7 0
4 years ago
A balloon originally had a volume of 4.39 L at 44C and a pressure of 729 torr  to what temperature must the balloon be cooled
VMariaS [17]

The new temperature : 11.56 °C

<h3>Further explanation </h3>

Boyle's law and Gay Lussac's law  

\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}

P1 = initial gas pressure (N/m² or Pa)  

V1 = initial gas volume (m³)  

P2 = final gas pressure  

V2 = final gas volume

T1 = initial gas temperature (K)  

T2 = final gas temperature  

V₁=4.39 L

T₁=44+273=317 K

P₁ = 729 torr = 0,959211 atm

V₂=3.78 L

P₂= 1 atm

\tt \dfrac{0.959211\times 4.39}{317}=\dfrac{1\times 3.78}{T_2}\\\\T_2=\dfrac{1\times 3.78\times 317}{0.959211\times 4.39}\\\\T_2=284.559~K=11.56~C

3 0
3 years ago
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