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Mrac [35]
3 years ago
7

9. Which indicator would show a pH change from 6 to 7?

Chemistry
1 answer:
expeople1 [14]3 years ago
6 0

Answer:

hi

Explanation:

because

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HELP PLEASE
Scilla [17]
I would say it is A because it can be a group of atoms. idk
6 0
4 years ago
A motor cyclist starts from rest and reaches a speed of 6m/s after travelling with uniform acceleration for 3s. What is his acce
choli [55]

Answer:

2m/s²

Explanation:

When an object starts or at its state of rest it has an Initial speed U = 0

Final speed = 6m/s

total time taken for the acceleration = 3s

Acceleration =?

Acceleration is the change in velocity (speed) with time

OR

Time rate of change of velocity

Acceleration = <u>Change in Speed(velocity)</u>

Time taken

Hence,

Acceleration = <u> </u><u> </u><u>V - </u><u>U</u><u> </u><u> </u>

t

a = <u>6</u><u> </u><u>-</u><u> </u><u>0</u>

3

a = <u>6</u><u> </u><u> </u>

3

a = 2m/s²

4 0
3 years ago
A student determines the iron(III) content of a solution by first precipitating it as iron(III) hydroxide, and then decomposing
Semmy [17]

Answer:

3.3535 g

Explanation:

Considering:

Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}

Or,

Moles =Molarity \times {Volume\ of\ the\ solution}

Given :

For iron(III) nitrate :

Molarity = 0.404 M

Volume = 52.0 mL

The conversion of mL to L is shown below:

1 mL = 10⁻³ L

Thus, volume = 52.0×10⁻³ L

Thus, moles of iron(III) nitrate :

Moles=0.404 \times {52.0\times 10^{-3}}\ moles

Moles of iron(III) nitrate  = 0.021 moles

1 mole of iron(III) nitrate forms 1 mole of iron(III) hydroxide which further forms 1 mole of  iron(III) oxide.

Thus, moles of  iron(III) oxide formed from 0.021 moles of iron(III) nitrate = 0.021 moles

Also, molar mass of iron(III) oxide = 159.69 g/mol

So, mass of iron(III) oxide = 0.021 moles × 159.69 g/mol = 3.3535 g

6 0
3 years ago
Anything that has mass and volume is made out of atoms.
Angelina_Jolie [31]

Answer:

yes lol jssbdkdbjdkdnnx

5 0
4 years ago
What is the difference between the orbital periods of Mercury and Earth?
d1i1m1o1n [39]
The correct answer is B. The difference between the orbital period of planets Mercury and Earth is 0.76 years. The orbit of mercury is the most eccentric among the planets in the Solar system and the smallest planet. It has an orbital period of 88 Earth days.
8 0
3 years ago
Read 2 more answers
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