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Serjik [45]
3 years ago
6

Solid carbon (C) can burn in oxygen (O2). Select

Chemistry
2 answers:
lilavasa [31]3 years ago
6 0

Answer:

             The complete chemical equation is as;

                                          C + O₂   →   CO₂

Explanation:

                    According to <em>law of mass conservatio</em>n the mass in isolated system can neither be created nor be destroyed. Applying this law to given <u>synthesis reaction</u> means that,

               (i) If there is one carbon atom on left hand side of the equation (reactant side) then there must be on e carbon on right hand side (product side) of the equation.

                (ii) If there are two oxygen atoms on left hand side of the equation (reactant side) then there must be two oxygen atoms on right hand side (product side) of the equation.

Hence, from equation it is proved that it obeys the said law and the number of atoms on both side are equal i.e.

                           Reactant Side                     Product Side

Carbon                          1                                          1

Oxygen                          2                                         2

allsm [11]3 years ago
6 0

Answer:

CO2

Explanation:

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3 years ago
Given the two half-cell reactions for copper and iron below
liraira [26]

Answer:

No, i will not use a water pipe consisting of the two metals

Explanation:

Looking at the reduction potential of the both metals, it is clear that an electrochemical cell is set up with iron as the anode and copper as the cathode.

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The correct value according to Ruler A is 2.2 cm
vladimir2022 [97]

Answer:

Measure the diameter of the circle using Ruler A and Ruler B.

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3 0
3 years ago
A single atom of an element has 21 neutrons, 20 electrons, and 20 protons. Which element is it?
jeyben [28]

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5 0
3 years ago
What is the molarity of a solution of 0.2 moles of Potassium Oxide
egoroff_w [7]

The molarity of a solution : 0.4 M

<h3>Further explanation</h3>

Given

0.2 moles of Potassium Oxide

500 ml of water = 0.5 L

Required

The molarity

Solution

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solution or mmol in each ml of solution

\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}

Assume volume of solution = volume of water(addition of solution volume from volume Potassium Oxide is negligible

Input the value :

M = 0.2 : 0.5

M = 0.4

3 0
3 years ago
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