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Ymorist [56]
3 years ago
9

In which unit is the wavelength of an electromagnetic wave commonly measured?

Chemistry
2 answers:
Dmitry [639]3 years ago
8 0
Is ...,.,,,KG .....,.,.,.
kaheart [24]3 years ago
5 0

Answer:

nm

Explanation:

trust me:)

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You decide to clean the bathroom. You notice that the shower is covered in a strange green slime. You try
musickatia [10]

Answer:

Use either a vinegar, Borax, or bleach solution in a spray bottle to tackle the mold. Simply spray the solution on showers, baths, basins, tiles, grout, or caulking. Then use either a cleaning cloth or a toothbrush to remove the slime

7 0
3 years ago
The smallest particle of an element that retains the chemical identity of that element is a/an
mario62 [17]
The answer is D. Atom
6 0
3 years ago
What is the net ionic equation of the reaction of FeCl2 with NaOH? Express you answer as a chemical equation including phases.
Lilit [14]

Answer:

Fe²⁺(aq) + 2OH⁻(aq) → Fe(OH)₂(s)

Explanation:

To determine the reaction, we define the reactants:

FeCl₂, NaOH

We dissociate them:

FeCl₂(aq) → Fe²⁺(aq) + 2Cl⁻ (aq)

NaOH (aq) → Na⁺ (aq) + OH⁻(aq)

Salts from chloride are soluble, except for Ag⁺, Pb²⁺, Hg₂²⁺, Cu⁺

The OH⁻ and the Fe²⁺ bonds to make a precipitate.

So, the molecular complete equation is:

FeCl₂(aq) +  2NaOH(aq) →  Fe(OH)₂(s) ↓ + 2NaCl(aq)

When we dissociate the elements, we get the net ionic equation but as we produced an state's change, the compound stays the same.

We cancel the spectators ions (the ones, that are repeated)

Fe²⁺(aq) + 2Cl⁻ (aq) + 2Na⁺ (aq) + 2OH⁻(aq) → Fe(OH)₂(s) + 2Na⁺(aq) + 2Cl⁻(aq)

Fe²⁺(aq) + 2OH⁻(aq) → Fe(OH)₂(s)

5 0
3 years ago
HELPPPPP!!
tigry1 [53]

Answer:

i promise you it's b

Explanation:

its not a or d because gasses are on the right side, its not d because metals are not brittle, and it's not c because theyre good conducters not insulators

3 0
3 years ago
Read 2 more answers
How much heat is required to warm 50.0 g of ice from -10.0oC to 0.00oC, melt the ice, warm the water from 0.00oC to 100.0oC, boi
ludmilkaskok [199]

The total heat required to convert the ice to steam is 155,000 J.

The given parameters:

  • <em>Mass of the ice, m = 50 g</em>
  • <em>Initial temperature of the ice, t = -10 ⁰C</em>
  • <em>Final temperature of the ice, T = 0⁰C, 100⁰C and 120⁰C</em>
  • <em>Specific heat capacity of water = 4.184 J/g⁰C</em>
  • <em>Heat of fusion of ice, = 333.55 J/g</em>
  • <em>Heat of vaporization, = 2,230 J/g</em>

<em />

The heat required to raise the temperature to 0⁰C is calculated as;

Q  = mc\Delta t\\\\Q_1 = 50 \times 4.184 \times (0 - (-10))\\\\Q_1 = 2092 \ J

The  heat required to melt the ice is calculated as follows;

Q_2 = mL_f\\\\Q_2 = 50 \times 333.55 \\\\Q_2 = 16,677.5 \ J

The heat raise the temperature to 100⁰C is calculated as;

Q_3 = 50 \times 4.184 \times (100 - 0)\\\\Q_3 = 20,920 \ J

The  heat required to boil the water is calculated as follows;

Q_4 = mL_v\\\\Q_4 = 50 \times 2230\\\\4_4 = 111,500 \ J

The heat raise the temperature to 120⁰C is calculated as;

Q_5 = 50 \times 4.184 \times (120 - 100)\\\\Q_5 = 4,184 \ J

The total heat required is calculated as follows;

Q_t = Q_1 + Q_2 + Q_3 + Q_4 + Q _5 \\\\Q_t  = 2092 + 16,677.5 + 20,920 + 111,500 + 4,184\\\\Q_t = 155,373.5 \ J\\\\Q_t \approx 155,000 \ J

Learn more about heat capacity here: brainly.com/question/16559442

4 0
3 years ago
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