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1 year ago

Definition a visual representation of data that uses unconnected plotted points

Chemistry

1 answer:

Vesna [10]1 year ago

3 0

A horizontal exempted is a bit tight but I think it’s a good idea

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Which of the following chemical equations is NOT correctly balanced?

forsale [732]

To see if an equation is balanced, make sure that each side of the reaction has an equal number of the types of atoms. The one that has a mismatch is A

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3 years ago

Using standard heats of formation, calculate the standard enthalpy change for the following reaction. 2NH3(g) 3N2O(g)4N2(g) 3H2O

trasher [3.6K]

Answer: $\Delta H^{0} = -879.15 kJ/mol$

Explanation: Heats of formation is the amount of heat necessary to create 1 mol of a compound from its molecular constituents. The basic conditions the substance is formed is at standard conditions: 1 atm and 25°C. Each compound has its own heat of formation per mol of compound (kJ/mol), but to an element is assigned a value of zero.

Standard Enthalpy Change is defined as the heat absorbed or released when a reaction takes place. It can be positive or negative, which means reaction is endothermic or exothermic, respectively.

Enthalpy change is calculated as the difference between the sum of heat formation of products and the sum of heat formation of the reactants:

$\Delta H^{0}=\Sigma H^{0}_{f}_{(products)}-\Sigma H^{0}_{f}_{(reactants)}$

For the reaction

2NH₃ + 3N₂O → 4N₂ + 3H₂O

2(-46.2) + 3(82.05) 4(0) + 3(-241.8)

$\Delta H^{0}=3(-241.8)-[ 2(-46.2)+3(82.05)]$

$\Delta H^{0}=-725.4-153.75$

$\Delta H^{0}=-879.15$

The standard enthalpy change for the reaction is $\Delta H^{0}=-879.15$ kJ

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2 years ago

The Earth is always _______ as it revolves around the sun.

EastWind [94]

Answer

Rotating

Explanation:

The Earth is always being pulled towards the Sun by gravity.

The Earth is not moving fast enough to "escape" the Sun's gravity and leave the solar system, but it is going too fast to be pulled into the Sun. Therefore, it keeps going around and around( roating)- orbiting the Sun.

5 0

3 years ago

Read 2 more answers

How many molecules of glucose are produced by each cycle of the light reaction?

disa [49]

Zero (0) molecules of glucose are produced.

4 0

3 years ago

How many particles are in 697.008 grams of Potassium Sulfate?

g100num [7]

Answer:

174.2592

Explanation:

Trust me.

8 0

3 years ago

Definition a visual representation of data that uses unconnected plotted points​

Definition a visual representation of data that uses unconnected plotted points