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kiruha [24]
3 years ago
7

To determine the pH of a solution using a pH indicator paper, you need a .

Chemistry
2 answers:
bonufazy [111]3 years ago
6 0

PH is the water and it color blue

kherson [118]3 years ago
6 0

Answer:

color key

creating a color key

Have known pH values

Explanation:

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Balancing chemical equations!<br> need help!!!<br> don’t mind how i wrote it.
elena-s [515]

Answer:

2 KCIO₃ → 2 KCI + 3 O₂

Explanation:

A chemical equation is balanced when the number of atoms of each element is equal on both sides of the equation.

You have already identified the initial number of atoms of each element on both sides of the equation. As a rule of thumb, we balance the number of oxygen and hydrogen atoms last.

However, since all the other elements are already balanced, we shall start by balancing the number of oxygen atoms.

The lowest common multiple of 2 and 3 is 6. Thus, we shall ensure that both sides of the equation has 6 oxygen atoms.

2 KCIO₃ → KCI + 3 O₂

<u>Reactants</u>

K --- 2

C--- 2

I --- 2

O --- 6

<u>Products</u>

K --- 1

C --- 1

I --- 1

O --- 6

Notice that number of K, C and I atoms on the left-hand side of the equation has also changed.

2 KCIO₃ → 2 KCI + 3 O₂

<u>Reactants</u>

K --- 2

C --- 2

I --- 2

O --- 6

<u>Products</u>

K --- 2

C --- 2

I --- 2

O --- 6

The equation is now balanced.

4 0
3 years ago
Would you want the starting reactants in an airbag system to have higher density or a lower density
scZoUnD [109]

Answer:

Explanation:

The de velopment of airbags began with the idea for a system that would ... of deaths or serious injuries decrease when an airbag and seat belt are used, ... An airbag must be able to deploy in a matter of milliseconds from the initial ... as hard as stone-- not the protective cushion you would want to crash into! ... Reactants ...

8 0
3 years ago
study the timeline♡based on fossil evidence about how long ago did the first single-celled life form appear on earth NEED ANSWER
Kipish [7]
4.1 billion years ago
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3 years ago
What is a renewable resource?! Helppppp!
Alex17521 [72]

Answer:

Explanation:

A renewable resource is a resource which can be used repeatedly and replaced naturally. Renewable energy almost never runs out, for example: solar energy is powered by heat from the sun and never runs out. Examples include oxygen, fresh water, solar energy and biomass.

4 0
4 years ago
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Why are index fossils used to date other fossils in an area of rock
WINSTONCH [101]
Index fossils<span> can be </span>used<span> to help determine the relative age of </span>rock<span> layers. </span>Index fossils<span> are from species that only existed for a short time. </span>Index fossils<span> are found in</span>rock<span> layers. Trilobites and Graptolites are </span><span>index fossils.</span>
8 0
3 years ago
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