Answer:
use photomath
Explanation:
photomath can give you each step
Answer:
Solid = rocks or other hard stuff
Liquid = water or mild or other stuff likt that
The enthalpy change of the reaction is <u>-1347.8 kJ.</u>
<h3>What is the enthalpy change, ΔH, of the reaction?</h3>
The enthalpy change, ΔH, of the reaction is calculated from Hess's law of constant heat summation as follows:
Hess's law states that the enthalpy change of a reaction is the sum of the enthalpies of the intermediate reaction.
Given the reactions below and their enthalpy values;
1. X (s) + 12 O₂ (g)⟶ XO (s) ΔH₁ = −850.5 kJ
2. XCO₃ (s) ⟶ XO (s) + CO₂ (g) ΔH₂ = +497.3 kJ
The enthalpy change, ΔH, of the reaction whose equation is given below, will be:
X (s) + 12 O₂ (g) + CO₂ (g) ⟶ XCO₃ (s)
ΔH = ΔH₁ - ΔH₂
ΔH = − 850.5 kJ - (+497.3 kJ)
ΔH = -1347.8 kJ
Learn more about enthalpy change at: brainly.com/question/14047927
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By state of matter I assume you mean solid, liquid, gas, in which case the answer would be C.
the behaviour of molecules:
- in a solid is low energy with limited activity where molecules only vibrate, cannot mould to shape of container
- in a liquid is with moderate energy, with molecules flowing over the top of one another, and thus can mould to the shape of the container
- in a gas is high energy with much activity, molecules "fly" around the container they are in and can be compressed
<h3>
Answer:</h3>
15.0 meters
<h3>
Explanation:</h3>
- Kilometers are units used to measure length.
- Length is also measured using other units which include meters, centimeters, decimeter, millimeter, etc
- To convert one unit to another we use conversion factors.
In this case to know inter-conversion between units of measuring length, we consider the following;
Kilometer(km)
10
Hectometer(Hm)
10
Decameter(dam)
10
Meter (M)
10
Decimeter (dm)
10
Centimeter (cm)
10
Millimeter (mm)
Therefore, to convert km to meter we use the conversion factor (10×10×10) 1000 m/km.
Thus;
0.0150 km is equivalent to;
= 0.0150 km × 1000 m/Km
= 15.0 meters
Thus, 0.0150 km is equivalent to 15.0 meters.
