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3 years ago

Are all acids colourless?

Chemistry

2 answers:

iragen [17]3 years ago

7 0

No :D they are not.

ra1l [238]3 years ago

3 0

Answer:

Explanation:

No, there are colored acids, too. For example, the colorful indicators you use in acid/base titrations are all weak acids. Very strong acids tend to be colorless, simply because they are mostly small molecules (HCl, HNO3, H2SO4. etc.)

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The specific heat of copper is 0.40 joules/ g °c. How much heat is needed in joules to change the temperature of a 55 gram subst

Snezhnost [94]

Answer : The amount of heat needed is, 1188 J

Explanation :

Formula used :

$q=m\times c\times (T_2-T_1)$

where,

q = heat needed = ?

m = mass of copper = 55 g

c = specific heat capacity of copper = $0.40J/g^oC$

$T_1$ = initial temperature = $20.0^oC$

$T_2$ = final temperature = $74.0^oC$

Now put all the given values in the above formula, we get:

$q=55g\times 0.40J/g^oC\times (74.0-20.0)^oC$

$q=1188J$

Thus, the amount of heat needed is, 1188 J

3 0

4 years ago

KBr(aq) + NaCl(aq) =

torisob [31]

It’s ionic
KCl(at)
Potassium chloride

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3 years ago

If the actual yield of sodium chloride from the reaction of

lions [1.4K]

If the actual yield of sodium chloride from the reaction of 8.3 g of sodium and 4.5 g of chlorine is 6.4 g, what is the percent yield?

Answer : 2Na(s) + Cl2(g) → 2NaCl(s)

Explanation: Friend me!!!

7 0

3 years ago

State what happens to the potential energy of a the substance during the interval BC *

Ratling [72]

Answer:

The potential energy decreases whereas the kinetic energy increases.

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3 years ago

Um Test

vitfil [10]

Suspensions

Explanation:

Suspensions are heterogeneous mixtures that contains large particles that can settle out or be filtered.

Suspensions are mixtures of small insoluble particles of a solid in a liquid or gas.
Examples are:

powdered chalk in water
muddy water
harmattan

The particles in suspension can settle on standing

Learn more:

Suspension brainly.com/question/1557970

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8 0

3 years ago