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Travka [436]
4 years ago
10

A beam of electrons is fired at a crystal of magnesium oxide, and photographic film is used to record the places where the elect

rons come through the crystal. Which of the following changes to the experiment is not likely to change the interference pattern that results on the film?
Chemistry
1 answer:
Yanka [14]4 years ago
5 0

Answer:

increasing the length of time the beam is fired at the crystal

Explanation:

Interference pattern does not depend on duration of the recording, though this might affect clarity of the image on the photographic film. Other things will change where the electrons end up. Speed of electrons affects its momentum, and thus its position. Proton has different mass, so different interference pattern. A different crystal will create a different interference pattern depending on the molecular formula.

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Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: ()Na2
anyanavicka [17]

Answer:

The coefficients in order are 2, 1, 1

Explanation:

Each side of the reaction needs to have the same number of each element due to conservation of matter.

First I looked at what was uneven, notice there are 2 Na on the left side and 4 Na on the left. The easiest way to fix that is to add a 2 on the Na2HPO4:

2(Na2HPO4)--> Na4P2O7 + H2O

Next take count of each element on both sides to see if the 2 balanced everything:

On the left there are 4 Na, 2 H, 2 P, and 8 O

On the right there are 4 Na, 2 H, 2 P, and 8 O

Since both sides match, you are done!

7 0
3 years ago
what are some snacks i can make that go with egg nog (please provide recipe) (will give brainilest for a good answer)​
Anit [1.1K]

Answer:

Cream butter and sugar. Beat in eggnog, baking soda and nutmeg. Gradually add flour and mix well. Cover and chill 1 hour. On a lightly floured surface, roll out half of the dough to 1/8-in. thickness. Using floured 3-1/2-in. cookie cutters, cut into desired shapes; place on ungreased baking sheets. Repeat with remaining dough.

Explanation:

eggnog crumble cookies they are so good

8 0
3 years ago
Homelearning
kirill115 [55]

Answer:

Number of moles of Fe = 10 mol

Number of moles of CO₂ = 15 mol

Explanation:

Given data:

Number of moles of iron oxide = 5 mol

Number of moles of carbon monoxide = 25 mol

Number of moles of product = ?

Solution:

Fe₂O₃ + 3CO   →  2Fe + 3CO₂

Now we will compare the moles of reactant with product.

                  Fe₂O₃        :         Fe

                     1             :          2

                    5             :         2×5 = 10 mol

                Fe₂O₃        :         CO₂

                     1             :          3

                    5             :         3×5 = 15 mol

                  CO           :         Fe

                     3             :          2

                    25             :         2/3×25 = 16.7 mol

                  CO            :         CO₂

                     3             :          3

                    25             :         25

Less number of moles of Fe and CO₂ are formed by iron oxide thus it will act as limiting reactant while CO is inn excess.

                 

4 0
3 years ago
Blood is a mixture of cells and a liquid called
solniwko [45]

Answer:

mostly water

Explanation:

just did he test on edg

7 0
3 years ago
Wolves prey heavily on pavers in a temperature forest ecosystem the diet of the beavers consist of leaves and branches and bark
Virty [35]

Answer:

<u>B. Primary Consumer</u>

Explanation:

It is the top of the food chain in this example.

5 0
3 years ago
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