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Nadusha1986 [10]
3 years ago
8

Which of the following is a compound?A) sugar B) salt C)Air D) oxygen​

Chemistry
2 answers:
vovangra [49]3 years ago
6 0
Sugar is a compound since it’s molecular structure comprises three elements that are bonded, while salt is an ionic compound. hope this helped :}
Dimas [21]3 years ago
3 0

Hi!salt is a compound hope it helps you

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Calculate the formula unit mass of Sodium hydroxide.
Ksivusya [100]

Answer:

MNa=22.989 g/mol.

MO=15.999 g/mol.

MH=1.0079 g/mol

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3 years ago
In which phase of matter do the particles have the highest state of energy?
alina1380 [7]
A-plasma
hope it helps
3 0
3 years ago
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What method of forecasting uses averages to predict future weather?
amid [387]

The climatology method of forecasting uses averages to predict future weather.

Answer: B

Explanation

The satellites and advanced technologies have helped meteorologists to forecast accurately.

There are four types of forecasting methods prevailing now.

They are climatology method, persistence method, analog method and trends method.

The persistence and trends method uses the previous day forecast and compare with today's condition to forecast about future.

The analog method is a complex method where the forecasting is done by comparing present weather condition with a similar condition occurred in the past to predict for future.

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4 0
3 years ago
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Using the following equation for the combustion of octane calculate the heat associated with the formation of 100.0 g of carbon
natali 33 [55]

Answer:

The right solution is "-602.69 KJ heat".

Explanation:

According to the question,

The 100.0 g of carbon dioxide:

= \frac{100.0 \ g}{114.33\  g/mole}

= 0.8747 \ moles

We know that 16 moles of CO_2 formation associates with -11018 kJ of heat, then

0.8747 moles CO_2 formation associates with,

= -\frac{0.8747}{16}\times 11018 \ KJ \ of \ heat

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8 0
3 years ago
When the free-energy change (AG) of a reaction is negative, the reaction is said to be: Endergonic Non spontaneous Spontaneous E
Greeley [361]

Answer:

Spontaneous

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The change in free energy , i.e. , ΔG , denotes the maximum amount of usable energy released , as going from initial state , i.e. , the reactant towards the final state , i.e. , the product .

And , the sign of the  ΔG , determines whether the reaction is Spontaneous or non Spontaneous or at equilibrium ,

i.e. ,

if

ΔG < 0 , the reaction is Spontaneous

ΔG > 0 , the reaction is non Spontaneous

ΔG = 0 , the reaction is at equilibrium

For ,

ΔG < 0 , that the reaction proceed without any energy input , hence , it is  Spontaneous in nature .

6 0
3 years ago
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