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romanna [79]
3 years ago
11

Reactant A contains 40 J of energy, and Reactant B contains 33.5 J of energy. The reactants combine to form product AB, which co

ntains 104 J of energy. What is the energy transformation?
a) Energy is absorbed because the product has more energy than the reactants have.
b) Energy is absorbed because the product the product has less energy than the reactants have.
c) Energy is lost because the product as more energy than the reactants have.
d) Energy is lost because the product has less energy than the reactants have.
Chemistry
1 answer:
Wittaler [7]3 years ago
8 0

Answer:

A

Explanation:

Energy is absorbed because the product has more energy than the reactants have.

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Your friends car has stalled in the road. You help you friend push the car off the road. Your friend pushed with a force of 55 N
Alex17521 [72]

Answer:

115N

Explanation:

your  friend and you push the car at the same time at the same direction so you add the force your friend is using and the force you’re using so: 60+55=115N

5 0
3 years ago
The pressure exerted by water at the bottom of a well is 0.50 atm. how many mmHg is this?
mariarad [96]

Answer:

0.5 atm is equal to 380mmHg.

Explanation:

For every 1 atm, it is equal to 760mmHg.

Therefore, 0.5 atm is 760/2, which is 380mmHg.

8 0
4 years ago
Arrange the metals used in this experiment (including H2 and Ag) in order of decreasing reactivity (most reactive metal first).
jarptica [38.1K]

Answer:

Na, Ca, Mg, All, Zn, Fe, Sn, Pb, H2, Cu, Ag

Explanation:

This is how metals are arranged in the electrochemical series.

Use the following to remember the order:

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Each word represent the order

K, Na, Ca, Mg, All, Zn, Fe, Sn, Pb, H2, Cu, Hg, Ag, Au

6 0
4 years ago
What is the overall reaction order for this rate law: rate= k[a][b]?
SpyIntel [72]
The overall reaction order is 2, because you add the orders of the individual components, which each are 1. 
7 0
3 years ago
When heated, KCIO3 decomposes into KCl and O2
Oksana_A [137]

Answer:

Explanation:

First, the KClO3 moles is determined by using given grams of KCl produced from the reaction.

Next, the moles of O2 produced is obtained by using the moles of KClO3 which then, finally converted into mass of O2.

Analyzing the given chemical reaction clearly shows that, 2 moles of KClO3 produces 2 moles of KCl and 3 moles of O2.

From the given grams of KCl produced the initial grams of KClO3 used in the reaction is determined as follows,

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3 years ago
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