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kenny6666 [7]
3 years ago
9

The pH of an aqueous solution:_________

Chemistry
1 answer:
dybincka [34]3 years ago
7 0

Answer:

d) must remain at 7

Explanation:

The pH of the aqueous solution should be kept at 7 as it is considered to be a neutral pH chemical.

If the pH exceeds the value 7, it is considered alkaline, and without the pH decreases from the value 7, it is considered acidic.

That is why if this value varies, the qualities of the neutral pH will not be maintained.

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Grade 8 Science
ira [324]
Materials<span> and their </span>properties<span>: </span>compounds like<span> sodium chloride - an interactive educational resource for 11 to 14 year olds. ... Elements are substances (</span>like<span> hydrogen and oxygen) that can't be split into simpler substances. ... For </span>each<span> statement, decide whether it describes a mixture or a </span>compound<span> and check the box.</span>
8 0
3 years ago
How many milliliters of C5H8 can be made from 366 mL C5H12 ?
zlopas [31]

The number of Ml  of C₅H₈  that can  be  made  from 366  ml  C₅H₁₂  is 314.7 ml  of C₅H₈


  <u><em>calculation</em></u>

 step  1: write  the  equation for  formation of C₅H₈

C₅H₁₂  →  C₅H₈  + 2 H₂

Step 2: find the mass of C₅H₁₂

mass = density × volume

= 0.620 g/ml × 366 ml =226.92 g

Step 3: find moles  Of  C₅H₁₂

moles  = mass÷  molar mass

from periodic table the  molar mass of  C₅H₁₂ = (12 x5) +(  1 x12) = 72 g/mol

moles = 226.92 g÷ 72 g/mol =3.152 moles

Step 4: use the  mole ratio  to determine the  moles of C₅H₈

C₅H₁₂:C₅H₈  is 1:1  from equation above

Therefore the  moles of C₅H₈  is also = 3.152  moles

Step 5: find the mass  of C₅H₈

mass = moles x molar mass

from periodic table the  molar mass of C₅H₈ = (12 x5) +( 1 x8) = 68 g/mol

= 3.152  moles x 68 g/mol = 214.34 g

Step 6: find Ml of  C₅H₈

=mass / density

= 214.34 g/0.681 g/ml = 314.7 ml



8 0
3 years ago
Va rog ! urgent! E pt chimie ​
n200080 [17]

Answer:

An element

It stays shiny

Explanation:

Pure Gold is an element.

An element is a distinct substance that cannot be split-up into simpler substances. Such substances consists of only one kind of atom.

There are over a hundred elements known to date.

As an element, Gold is classified as a metal due to its very unique set of properties.

One of the indicator that gold does not react with oxygen is that it stays shiny. It does not give rusty look when exposed to air.

Substances that combines with oxygen have a rusty look or change appearance when expose to air. For example, iron.

5 0
3 years ago
When an equation is balanced what is the same on both side?
sammy [17]
"equal to"

1=1
1 is equal to 1

Is this what you mean?
3 0
3 years ago
Read 2 more answers
Please help!!!!!!!!!!!!!!!!!! Now that the lab is complete, it’s time to write your lab report. The purpose of this guide is to
Inessa [10]

Answer:

what was the lab?

Explanation:

8 0
3 years ago
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