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NISA [10]
3 years ago
5

What is the frequency of this wave? 1 2 3 4

Chemistry
2 answers:
Delvig [45]3 years ago
8 0
Hello Vargasalex2222!
I believe that the answer is two.
I hope I helped!
Have a great day~ ^u^
lilavasa [31]3 years ago
3 0
Hey it is 
2

hope l helped
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Ethylene glycol (antifreeze) has a density of 1.11 g/cm^3. What is the volume in liters of 3.46 kg of ethylene glycol?
xenn [34]
3.11 i'm not sure about measurements  maybe like 3.11kg/cm^3
7 0
3 years ago
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How much heat must be absorbed by 125 g of ethanol to change its temperature from 21.5 ∘C to 34.8 ∘C? (Specific heat capacity of
Katarina [22]

Answer:

Option D. 4.02 kJ

Explanation:

A simple calorimetry problem

Q = m . C . ΔT

ΔT = Final T° - Initial T°

C = Specific heat capacity

m = mass

Let's replace the data

Q = 125 g . 2.42 J/g∘C . (34.8°C -21.5 °C)

Q= 4023.25 J

We must convert the answer to kJ

4023.25 J . 1kJ /1000 =4.02kJ

3 0
3 years ago
1. Scientists create both scientific theories and scientific laws as they make observations and conduct experiments about the na
Y_Kistochka [10]

Answer:

D

Explanation:

4 0
2 years ago
How many grams of NH3 can be dissolved in 50 grams of water at 50oC?
weqwewe [10]

15 grams of  NH3 can be dissolved

<h3>Further explanation</h3>

Given

50 grams of water at 50°C

Required

mass of NH3

Solution

Solubility is the maximum amount of a substance that can dissolve in some solvents. Factors that affect solubility  

  • 1. Temperature:
  • 2. Surface area:
  • 3. Solvent type:
  • 4. Stirring process:

We can use solubility chart (attached) to determine the solubility of NH3 at 50°C

From the graph, we can see that the solubility of NH3 in 100 g of water at 50 C is 30 g

So that the solubility in 50 grams of water is:

= 50/100 x 30

= 15 grams

5 0
3 years ago
What is the mass of 8.12 × 1023 molecules of CO2 gas? (Atomic mass of carbon = 12.011 u; oxygen = 15.999 u.)
Elza [17]

Answer:

8306.76

Explanation:

you just calcuate 8.12 x 1023 and that will give you the answer

<h2>PLZ mark me as a BRAINLIEST</h2>
6 0
3 years ago
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