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4 years ago

Minerals form from magma in the predictable patterns in a process known as

Chemistry

1 answer:

Lisa [10]4 years ago

7 0

The answer is A. Bowen's Reaction Series.

Minerals form from magma in the predictable patterns in a process known as Bowen's Reaction Series.

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A dolphin travels a distance 20 miles up the coastline in 153 minutes.If 1 mile is equal to 1609 meters,then what is the dolphin

Afina-wow [57]

Answer:

The dolphins average speed is 3.51 $\frac{meters}{seconds}$

Explanation:

First of all, the following rules of three should be applied:

If 1 mile is equal to 1609 meters, 20 miles are equal to how many meters?

$distance=\frac{20 miles*1609 meters}{1 mile}$

distance=32,180 meters

If 1 minute is equal to 60 seconds, 153 minutes is equal to how many seconds?

$time=\frac{153 minutes*60 seconds}{1 minute}$

time= 9,180 seconds

Speed is a physical quantity that expresses the relationship between the space traveled by an object and the time used for it. That is, speed implies the change of position of an object in space within a certain amount of time and is calculated as:

$speed=\frac{distance}{time}$

So in this case the velocity is calculated as:

$speed=\frac{32,180 meters}{9,180 seconds}$

Solving, you get:

Speed= 3.51 $\frac{meters}{seconds}$

The dolphins average speed is 3.51 $\frac{meters}{seconds}$

4 0

3 years ago

Which of the following is an accurate statement

Yanka [14]

What are the statements?

8 0

3 years ago

The number of electrons present in 4.2 gram of methane is

jeka94

Answer:

Explanation:

One CH4 molecules = 10 electrons ( Carbon 6e + 4Hydrogen 4e)

A mole of any substance witll have = 6.023*10^23 atom/ molecuels,

One mole of any substnce is equal is nothing but its moalr mass

Molar mass of CH4 = 16.04

It mean,

16.04 g of CH4 has = 6.023*10^23 molecules of methane

but

4.2 gram of CH4 = 6.023*10^23 * 4.2 /16.04 = 1.58*10^23 molecuels of CH4

So one molecule has =10 electrons

1.58*10^23 molecuels will have = 1.58*10^23 * 10 = 1.58*10^24

Hope this help you

3 0

3 years ago

An inexpensive and accurate method of measuring the quantity of electricity passing through a circuit is to pass it through a so

vovangra [49]

Answer:

127.013 C

Explanation:

-We apply Faraday's First Law of Electrolysis which states that the mass,m of a substance deposited is directly proportional to the current,Q passed through it:

$m=ZQ$

Where Z is the proportionality constant(g/C)

-The current can therefore be calculated as:

$m=ZQ\\\\Z=\frac{Atomic \ mass \ of \ substance}{Faraday's \ Constant}\\\\=\frac{107.8682}{96485}\\\\=0.001118\ g/C\\\\\\Q=\frac{m}{Z}\\\\m=\bigtriangleup m=1.9274-1.7854=0.142 \ g\\\\\therefore Q=\frac{0.142\ g}{0.001118g/C}\\\\=127.013 \ C$

Hence, the amount of current through the circuit is 127.013 C

5 0

3 years ago

Hawaii, which sits over a hot spot located near the center of the Pacific

inysia [295]

The person on top is very correct have a beautiful lovely day:)

6 0

3 years ago