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stira [4]
2 years ago
14

Many _____ transfer mechanical energy from one _______ to another.

Chemistry
1 answer:
blsea [12.9K]2 years ago
4 0
The answer is machines, and object. I hope this helps.
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A forest ecosystem starts with both Sonoran toads and Wood frogs. What would you expect to happen if the ecosystem becomes more
Gnom [1K]

Answer:

i think that sonoran toads would prosper and wood frogs would disappear

Explanation:

because of the provided information

5 0
3 years ago
What is the theoretical yield of ammonia that can be obtained from the reaction of 10.0 g of H2 and excess N2?
zubka84 [21]
Theoretical yield is the ideal number, so we'll assume it all reacted without issue.
\frac{10.0gH _{2} }{1}×\frac{1molH_{2} }{2.016gH _{2} }×\frac{2molNH _{3} }{3molH _{2} }×\frac{17.03gNH _{3} }{1molNH _{3} }=56.3gNH↓3
8 0
3 years ago
Read 2 more answers
The temperature of a sample of liquid water changes from 50°C to 30°C. Which statement best explains the change that
Hunter-Best [27]

Answer:

the molecules move more quickly and their average kinetic energy decreases :D

Explanation:

8 0
2 years ago
Which element would you expect to be more metallic?<br> (a) Ca or Rb (b) Mg or Ra (c) Br or I
svlad2 [7]

Explanation:

When we move across a period from left to right then there will occur an increase in electronegativity and also there will occur an increase in non-metallic character of the elements.

As calcium (Ca) is a group 2A element and rubidium (Rb) is a group 1A element. Hence, Rb being an alkali metal is more metallic in nature than calcium (alkaline earth metal).

Both magnesium (Mg) and radium (Ra) are group 2A elements. And, when we move down a group then as the size of element increases so, it becomes easy of the metal atom to lose an electron.

As a result, there occurs an increase in metallic character of the element. Hence, Radium (Ra) is more metallic in nature than magnesium (Mg).

Also, both bromine and iodine are group 17 elements. Since, both of them are non-metals and non-metallic character increases on moving down the group.

Therefore, bromine (Br) is more metallic than iodine.

7 0
3 years ago
For the oxidation-reduction reaction equation given here 4ga+p4 indicate how many electrons are transferred in the formation of
sergij07 [2.7K]
The reaction given is:

4Ga + P4 ---> 4GaP

The oxidation number of the reactants is zero, because they are pure elements.

The P in compounds may have oxidation states 3- or 5-. Gallium may only have oxidation state 3+.

Then, to be neutral in GaP the oxidation states are 3+ for Ga and 3- for P.

And the transference of electrons can be see in this oxidation - reduction equations:

Ga (0) - 3 e-    ----> Ga (3+)

P (0) + 3e- ---> P (3-)

So, for one formula unit, 3 electrons have been transfered from each Ga atom to P atom to form one GaP unit.

Answer: 3 electrons.
3 0
3 years ago
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