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denis23 [38]
3 years ago
9

Calculate the mass in grams of 1.13 x 102 molecules of propane. The chemical formula for propane is C3H8.

Chemistry
1 answer:
g100num [7]3 years ago
3 0
Moles = (6.74*10^23)/(6.02*10^23) =1.119 moles

1.119*44.09=49.36g
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Hg-178 undergoes 2 alpha decay and positron emission. Determine the new isotope.
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3 years ago
What is the acceleration of an object that goes from 3 m/s to 5 m/s in 8 s?
nikdorinn [45]

Answer: 0.25m/s2

Explanation:

Acceleration is change in velocity with time

V = final velocity = 5m/s

U =Initial velocity = 3m/s

t = time = 8s

a = Acceleration =?

a = V — U / t

a = (5 — 3) / 8

a = 2/8

a = 0.25m/s2

8 0
3 years ago
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In Universe , recently discovered by an intrepid team of chemists who also happen to have studied interdimensional travel, quant
tiny-mole [99]

Answer:

Check the explanation

Explanation:

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In our universe the ground state electronic configuration of sixth transition metal, Iron (Fe) :  [Ar] 3d^{6} 4s^{2}

and the electronic configuration of seventh transition metal, Cobalt (Co) :  [Ar] 3d^{7} 4s^{2}

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In universe L there are seven orbitals.

Ground state electronic configuration of sixth and seven transition element.

Sixth transition metal: [Ar] 3d^{7} 4s^1 or [X] 3d^{7} 4s^1

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7 0
3 years ago
If the caterpillar keeps moving at the same speed, how long will it take to travel 6cm?
Solnce55 [7]

It will take 15 s to travel 6 cm

<h3>Further explanation</h3>

Given

distance versus time graph

Required

time travel

Solution

Caterpillar motion is a straight motion with a constant speed, so that the graph between distance and time forms a diagonal line

If we look at the graph, we can determine the time taken when the distance reaches 6 cm (y axis) by drawing a line to the diagonal line and cutting the x-axis as time, and we get 15 s

Or we can also use the formula for motion at constant speed:

d = v x t

With v at point 2,5 of 2/5 m / s, so the time taken:

\tt t=\dfrac{d}{v}=\dfrac{6}{2/5}=15~s

4 0
3 years ago
Why are some alkali metals stored under oil?
Dahasolnce [82]

due to there reactive rate?

6 0
3 years ago
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