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yarga [219]
3 years ago
10

Sarah needs to replace part of the metal railing on her deck and wants the new railing to match the existing railing. However, s

he does not know what metal the railing is made from. Which is a property that she can use to identify the metal?
Chemistry
1 answer:
skelet666 [1.2K]3 years ago
8 0
There are many ways to test and identify metal. The easiest way is observing its color. Also how reflective it is. Other ways would be boiling point, melting point, density, or conductivity of the metal.
Hope This Helps and God Bless!
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Helppppp pleaseeee xx
EleoNora [17]

Answer:

2.5 moles of O₂ = 5 moles of H₂O

Explanation:

The balanced equation for the reaction is given below:

2H₂ + O₂ —> 2H₂O

From the balanced equation above,

1 mole of O₂ reacted to produce 2 moles of H₂O.

Finally, we shall determine the number of mole of H₂O produced by the reaction of 2.5 moles of O₂. This can be obtained as follow:

From the balanced equation above,

1 mole of O₂ reacted to produce 2 moles of H₂O.

Therefore, 2.5 moles of O₂ will react to produce = 2.5 × 2 = 5 moles of H₂O.

Thus,

2.5 moles of O₂ = 5 moles of H₂O

7 0
3 years ago
A cheetah is an organism that observes chase and catches its pery what kind of energy is that A mechanicle kenetic to chemical t
Temka [501]

Answer:

C mechanical potential to chemical to mechanical kinetic

Explanation:

When the cheetah observes it prey, it does not move at all and remains still in one place. This is potential energy.

To chase after its prey or to pounce on it, the cheetah would require energy. This is obtained by its body by performing certain chemical activities that generate energy that help it to move.

When the cheetah finally undergoes this, it has enough energy to finally come out of hiding and chase its prey. This is kinetic energy as while doing so, the cheetah is in motion.

Hope it helps.

4 0
3 years ago
What is the potential energy of a molecule?
iren2701 [21]

Answer:

I guess the answer is D point

5 0
2 years ago
Read 2 more answers
1. The answer to the research question is the...
katovenus [111]

Answer:

1. A claim

2. B evidence

8 0
4 years ago
CO2 + H2O --> C2H2 + O2
vagabundo [1.1K]

Answer:

C2H2 + 5 O2 = 4 CO2 + 2 H2O

Add / Edited: 27.09.2014 / 25.01.2015

Evaluation of information: 5.0 out of 5 / number of votes: 2

Source: https://chemiday.com/en/reaction/3-1-0-339

Explanation:

5 0
3 years ago
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