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GenaCL600 [577]
3 years ago
8

Which law did the U.S. Congress pass as a response to the Dust Bowl?

Chemistry
1 answer:
DENIUS [597]3 years ago
7 0
Question 2: Answer is (B), Soil Conservation Act (1936)



Hope that helps!!!
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Which of the following is not true of atoms?
Alexandra [31]

Answer:

they are composed of water

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Is a flashlight turned on kinetic or potential energy ?
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8 0
3 years ago
4Cr(s)+3O2(g)→2Cr2O3(s) calculate how many grams of the product form when 21.4 g of O2 completely reacts
weqwewe [10]

Answer:

= 67.79 g

Explanation:

The equation for the reaction is;

4Cr(s)+3O2(g)→2Cr2O3(s)

The mass of O2 is 21.4 g, therefore, we find the number of moles of O2;

moles O2 = 21.4 g / 32 g/mol

                =0.669 moles

Using mole ratio, we get the moles of Cr2O3;

moles Cr2O3 = 0.669 x 2/3

                       =0.446 moles

but molar mass of Cr2O3 is 151.99 g/mol

Hence,

The mass Cr2O3 = 0.446 mol x 151.99 g/mol

                            <u> = 67.79 g </u>

6 0
3 years ago
Element c has a strong emmission aound 450nm Does this emmission line reprosent a lower of higher emergy line at 627 nm?
Julli [10]

It  respresents the higher energy level than 627nm .

<h3>What is a emission line ? </h3>

Emission lines are the glowing hot gas emits lines of light whereas absorption line  refers to the tendency of  cool atmospheric gas to absorb the same line of light.Some lights produce dark band when the light passes through gas in the atmosphere . There are two line spectrum  and absorption.

 spectrum is an excitement of  electrons from lower to higher energy levels and when it comes back it releases energy in the terms of colourful lights .

It represents the  higher energy levels than 627nm because Energy is inversly proportional to wavelength .

to learn more about Emission lines click here

 brainly.com/question/28184999

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5 0
2 years ago
Evaluate the method of separation to be used.<br>1. Stones and rice (for cooking)​
zheka24 [161]

Answer:

hand picking

Explanation:

as stone is bigger in size we can see them with our eyes so we can handpick it

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2 years ago
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