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3 years ago

If an element has 4 naturally occuring isotopes, how many peaks will show up in the mass spectra?

1 answer:

6 0

Base peak: The most intense (tallest) peak in a mass spectrum, due to the ion with the greatest relative abundance (relative intensity; height of peak along the spectrum's y-axis). Not to be confused with molecular ion: base peaks are not always molecular ions, and molecular ions are not always base peaks.

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The surface of what he can act like a sort of skin due to a Liquid called

PIT_PIT [208]

A Liquid called Surface Tension.

8 0

4 years ago

How many dm3 of oxygen at STP would be required to react completely with 38.8g of propane? (3 marks)

11Alexandr11 [23.1K]

$98.56 dm^3$ of oxygen at STP would be required to react completely with 38.8g of propane.

<u>Given that :</u>

molar mass of propane = 44 g/mol

mass of propane = 38.8 g

∴ Moles present in 38.8 g of propane = $\frac{38.8}{44}$ = 0.88 mole

<u>applying rule of balanced equations </u>

1 mole of propane = 5 moles of oxygen

0.88 mole of propane = 5 * 0.88 = 4.4 moles of oxygen

Note : volume of 1 mole of oxygen at STP = $22.4 dm^3$

∴Total volume of oxygen required at STP = 22.4 * 4.4 = $98.56 dm^3$

Hence we can conclude that the volume of oxygen at STP required to react completely $98.56 dm^3$

Learn more : brainly.com/question/16998374

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2 years ago

What discovery led j.j Thomson to decide that atoms were not indivisible but are actually composed of smaller parts?

Setler79 [48]

Answer:

Thomson to decide that atoms were not indivisible, in reality are actually composed of smaller parts? Thomson used a scanning tunneling micrograph to capture images of atoms. Thomson used a beam of negatively charged particles. Thomson used only the experimental results of other scientists

Explanation:

7 0

4 years ago

Read 2 more answers

A 222 N force is required to keep an object moving along a circular path with a diameter of 11.6 m at a speed of 7.60 m/s. What

Arte-miy333 [17]

Answer:

$m=22.3\ kg$

Explanation:

The expression for centrifugal force is shown below as:-

$F=\frac{m\times v^2}{r}$

Where, m is the mass of the object = ?

v is the velocity of the object = 7.60 m/s

r is the radius

F is the force = 222 N

Diamter = 11.6 m

Radius = d/2 = 11.6 m/2 = 5.8 m

Applying the values in the above expression as:-

$222=\frac{m\times {7.60}^2}{5.8}$

$57.76m=1287.6$

$m=22.3\ kg$

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3 years ago

Why is air resistance considered a type of contact force?

MAVERICK [17]

Answer:

Explanation:

The normal force is the support force exerted upon an object that is in contact with another stable object. The air resistance is a special type of frictional force that acts upon objects as they travel through the air. The force of air resistance is often observed to oppose the motion of an object.

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3 years ago