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guapka [62]
3 years ago
10

I don't understand the question

Chemistry
2 answers:
s344n2d4d5 [400]3 years ago
7 0
How does the picture show that the inner core spins faster than the outer core?
Kaylis [27]3 years ago
5 0
If the diagram is showing the larger arrow it is possible that the arrow is indicating the inner core is able to move faster because the mass is not the same as the outer core.
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How much 3.0 M NaOH is needed to neutralize 30. mL of 0.75 M H2SO4?
Nikitich [7]

Answer:

15.0 mL

Explanation:

Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!

3 0
3 years ago
The half-life of carbon-14 is about ____________ years.<br><br> Fill in the blank.
katrin2010 [14]
The half-life of carbon-14 is about 5730 years
5 0
2 years ago
Read 2 more answers
5. A sample of pure acetyl salicylic acid had a mass of 0.268 grams. It was dissolved in NaOH and diluted to 500.00mL in a volum
Elza [17]

Answer:

a. 5.36x10⁻⁴ g/mL

b. 4.29x10⁻⁵ g/mL

Explanation:

As the units for concentration are not specified, I'll respond using g/mL.

a. We <em>divide the sample mass by the final volume</em> in order to <u>calculate the concentration</u>:

  • 0.268 g / 500 mL = 5.36x10⁻⁴ g/mL

b. We can use C₁V₁=C₂V₂ for this question:

  • 8.00 mL * 5.36x10⁻⁴ g/mL = C₂ * 100.00 mL
  • C₂ = 4.29x10⁻⁵ g/mL
4 0
3 years ago
Examples of solid mixtures
elixir [45]
Salad, a bag of different colored pebbles or sand, etc
6 0
3 years ago
Determine the change in volume that takes place when a 2.00 L sample of N2 gas is heated from 250 C to 500 C.
Effectus [21]

Answer:

V₂ = 2.96 L

Explanation:

Given data:

Initial volume = 2.00 L

Initial temperature =  250°C

Final volume = ?

Final temperature = 500°C

Solution:

First of all we will convert the temperature into kelvin.

250+273 = 523 k

500+273= 773 k

According to Charles's law,

V∝ T

V = KT

V₁/T₁ = V₂/T₂

V₂ = T₂V₁/T₁

V₂ = 2 L × 773 K / 523 k

V₂ =  1546 L.K / 523 k

V₂ = 2.96 L

4 0
3 years ago
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