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e-lub [12.9K]
3 years ago
9

What is the average speed of a helicopter that flies 50km in 20 minutes and then 30km minutes

Chemistry
1 answer:
Usimov [2.4K]3 years ago
6 0

Answer:

150km/hr

Explanation:

When it flies 50km, the average speed is 150km/hr.

When it flies 30 km, how many minutes does it take?

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What happens in the artificial transmutation of an element? Include an example.
Mice21 [21]
What happens in the artificial transmutation is that the nucleous is bombarded with high energy particles which we can describe as kinetic energy and the idea for them is to induce what we call transmutation. Also what happens is that the high energy particles are accelerated. One of the examples is when nitrogen is transformed into hydrogen by combining its nucleous with an alpha particle
6 0
3 years ago
A teacher attaches two slinky springs to a fixed support. The springs are moved, as shown in the image. Wave A wave B What prope
Misha Larkins [42]

Answer:

a changes more because it going higher

Explanation:

6 0
3 years ago
Read 2 more answers
What volume of 0.4567 m h2so4 is required to neutralize 30.00 ml of 0.3210 m naoh?
sertanlavr [38]
Answer is: volume of H₂SO₄ is 42.1 mL.<span>
Chemical reaction: H</span>₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O.<span>
c(H</span>₂SO₄) = 0,4567 M = 0,4567 mol/L.<span>
V(NaOH) = 30 mL </span>÷ 1000 mL/L <span>= 0,03 L.
c(NaOH) = 0,321 M = 0,321 mol/L.
n(NaOH) = c(NaOH) · V(NaOH).
n(NaOH) = 0,321 mol/L · 0,030 L.
n(NaOH) = 0,00963 mol.
From chemical reaction: n(H</span>₂SO₄) : n(NaOH) = 1 : 2.<span>
n(H</span>₂SO₄) = 0,01926 mol.<span>
V(H</span>₂SO₄) = n(H₂SO₄) ÷ c(H₂SO₄).<span>
V(H</span>₂SO₄) = 0,01926 mol ÷ 0,4567 mol/L.<span>
V(H</span>₂SO₄<span>) = 0,0421 L = 42,1 mL.</span>
3 0
3 years ago
What is the Volume of the salt solution? ​
hammer [34]
<h3>Answer:</h3>

61.3 mL

<h3>Explanation:</h3>

From the data given;

  • Mass of volumetric flask is 109.1 g
  • Mass of salt is 5.01 g
  • Mass of Volumetric flask and salt is 113.5 g
  • Mass of volumetric flask and salt solution is 170.4 g
  • Mass of salt solution is 61.3 g

We are required to calculate the volume of salt solution;

We need to know the relationship between density, mass and volume of a solution.

Density = Mass ÷ Volume

Therefore, given mass and density we can find the volume.

Rearranging the formula;

Volume = Mass ÷ density

Assuming the density of salt solution is 1 g/mL

Then;

Volume = Mass of the salt solution ÷ density of the salt solution

             = 61.3 g ÷ 1 g/mL

             = 61.3 mL

Therefore, the volume of the salt solution is 61.3 mL

3 0
3 years ago
Help please have to turn this in tonight.
34kurt
False it is made up of protons and neutrons not electrons!!
6 0
3 years ago
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