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Mkey [24]
3 years ago
9

What do scientist do too easily share measurement data they can understand

Chemistry
1 answer:
Mrrafil [7]3 years ago
6 0
They often create data tables, charts, or graphs to easily communicate results.
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At 47c a gas has a pressure of 140kpa. The gas is cooled until the pressure decreases to 105kpa. If the volume remains constant,
IgorC [24]

Answer:

The final temperature is equal to 240 K or -33.15°C

Explanation:

Given that,

Initial temperature of the gas, T₁ = 47°C = 320 K

Initial pressure, P₁ = 140 kpa

Final pressure, P₂ = 105 kpa

We need to find the final temperature if the volume remains constant.  The relation between temperature and pressure is given by :

P\propto T

or

\dfrac{P_1}{P_2}=\dfrac{T_1}{T_2}\\\\T_2=\dfrac{P_2T_1}{P_1}\\\\T_2=\dfrac{105\times 320}{140}\\\\T_2=240\ K\\\\T_2=-33.15^{\circ} C

So, the final temperature is equal to 240 K or -33.15°C.

7 0
3 years ago
Determine the mass of carbon iv oxide ,produced on burning 104g of ethyne​
mars1129 [50]

163 grams (3 sig. fig.).

<h3>Explanation</h3>
  • Formula of <em>carbon(IV) oxide</em> (a.k.a. carbon dioxide): \text{CO}_2.
  • Molar mass of \text{CO}_2: \underbrace{12.01}_{\text{C}} + 2\times\underbrace{16.00}_{\text{O}}=44.01\;\text{g}\cdot\text{mol}^{-1}.
  • Formula of ethyne: structural \text{H}-\text{C}\equiv\text{C}-\text{H} or molecular \text{C}_2\text{H}_2.
  • Molar mass of \text{C}_2\text{H}_2: 2\times\underbrace{12.01}_{\text{C}}+2 \times\underbrace{16.00}_{\text{O}} = 56.02\;\text{g}\cdot\text{mol}^{-1}.

All carbon atoms in that 104 grams of ethyne will end up in \text{CO}_2. Number of moles of molecules in 104 grams of ethyne:

n = \dfrac{m}{M} = \dfrac{104}{56.02} = 1.85648\;\text{mol}.

There are two carbon atoms in each ethyne molecule. Number of carbon atoms in that many ethyne molecules:

n(\text{C}) = 2\;n(\text{C}_2\text{H}_2) = 3.71296\;\text{mol}.

There are one carbon atom in each \text{CO}_2 molecule. In case oxygen is in excess, all those carbon atoms from that 104 grams of ethyne will make n(\text{CO}_2) = n(\text{C}) =3.71296\;\text{mol} of \text{CO}_2.

Mass of all those \text{CO}_2 molecules:

m = n\cdot M = 163\;\text{g}. (3 sig. fig. as in the mass of ethyne.)

7 0
3 years ago
Which layer of Earth has partially melted material that moves the tectonic plates?
beks73 [17]

The layer of Earth that has partially melted material that moves the tectonic plates is Mantle.  The correct option is C.

<h3>What are the layers of the Earth?</h3>

The Earth is divided into three layers: the crust, the mantle, and the core. This is the earth's outer layer, and it is composed primarily of solid rock, primarily basalt and granite. Oceanic crust and continental crust are the two types of crust.

The layer of Earth that has partially melted material that moves the tectonic plates is Mantle.

Thus, the correct option is C.

For more details regarding Layers of Earth, visit:

brainly.com/question/18696113

#SPJ1

6 0
2 years ago
Does anyone know this? help please
Sav [38]

Explanation:

The substance that is in excess that doesn't get used up as a reactant is called limiting reactant.

7 0
3 years ago
Sugar is...
Leya [2.2K]

Answer:

B. a type of carbohydrate

Explanation:

Sugar is a type of carbohydrate.

Hope it helped brainiest plz

5 0
3 years ago
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