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stiv31 [10]
3 years ago
15

Explain what happens to energy and matter during a chemical reaction.

Chemistry
1 answer:
AlekseyPX3 years ago
4 0
According to law of conservation of matter and energy, amount of both of them will remain same

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What would the formula of an ionic compound made of Aluminum and Oxygen be?
yan [13]

Answer:

Sodium Aluminate

Formula:-

\quad{:}\longrightarrow\sf NaAlO_2

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Melting points and boiling points of some ionic compounds

\boxed{\begin{array}{|c|c|c|c|} \cline {1-4}\Large\sf {Ionic\:Compounds} & \sf \Large {Chemical\:Formula} & \Large \sf{Melting\:point_{(k)}} & \Large\sf {Boiling\:point_{(k)}} \\ &&& \\ \cline {1-4} \sf Sodium\:Chloride & \sf NaCl & 1074 & 1686 \\ &&& \\ \cline {1-4} \sf Lithium\:Chloride & \sf \sf LiCl & 887 & 1600 \\ &&& \\ \cline {1-4} \sf Calcium\:Chloride & \sf CaCl_2 & 1045 & 1900 \\ &&& \\ \cline {1-4} \sf Calcium\:Oxide & \sf CaO & 2850 & 3120 \\ &&& \\ \cline {1-4} \sf Magnesium\:Chloride & \sf MgCl_2 & 981 & 1685 \\ &&& \\ \cline {1-4} \end{array}}

8 0
2 years ago
As we move across the periodic table of elements, certain trends are evident. The placement of individual elements in the period
Soloha48 [4]

Answer:

A and E

Explanation:

A and E are the answers! usa test prep told me.    :L

4 0
2 years ago
Which substance is correctly identified as a homogeneous or heterogeneous mixture?
larisa86 [58]

Answer:

A

Explanation:

A salad with lettuce, cheese, seeds, tomatoes, broccoli, and other vegetables is an example of a heterogeneous mixture.

Milk is not mixed with anything so that is incorrect

River water is mixed in with dirt and minerals so this one is incorrect

Beach sand is incorrect because you can see colored particles.

7 0
3 years ago
By studying fossils, scientists get an idea of ....
Tema [17]
<span>By studying fossils, scientists get an idea of what the organisms looked like, what they ate, and how they lived. </span>
6 0
2 years ago
What results when two waves that are completely out of phase meet?
ELEN [110]

Answer:

The result is a superposition which is twice the amplitude of each input wave. Φ = π means the two waves are completely OUT OF PHASE, and so add completely destructively. The result is a superposition which has no amplitude at all.

Explanation:

The result is a superposition which is twice the amplitude of each input wave. Φ = π means the two waves are completely OUT OF PHASE, and so add completely destructively. The result is a superposition which has no amplitude at all.

5 0
1 year ago
Read 2 more answers
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