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Thepotemich [5.8K]
3 years ago
15

Sam investigates the reactivity of metals in air. His observations are shown below.

Chemistry
2 answers:
viva [34]3 years ago
6 0

Answer:5

Explanation:

Rufina [12.5K]3 years ago
4 0

Answer:

(a)B,D,A,C

Explanation:

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30,434 and 43,403 alike and difrente
Svetlanka [38]
They are alike because they have the same numbers in a different order. One is reversing the numbers of the original set. They are different because one number is larger in value while the other is lesser in value compared to each other.
7 0
3 years ago
¿Por qué hay sal de diversos colores?
xz_007 [3.2K]

Answer:

Los diferentes colores de la sal marina provienen de los niveles traza de minerales como magnesio, potasio y calcio.

Explanation:

Cuanto más oscura es la sal marina, mayor es la concentración de minerales e impurezas. Esto incluso incluye concentraciones de metales pesados de la contaminación del océano

8 0
3 years ago
How does an increase in concentration affect a chemical reaction? (3 points)
Firlakuza [10]

Answer:

Explanation:

1. Increasing the concentrations of reactants in a chemical reaction would affect a reaction positively by increasing the number of collisions within a particular period which in turn increases the rate of reaction.

2. The molecules gains energy,which enable them to move faster and collide with the right energy for a reaction to take place.

3. The average kinetic motion of molecules in a solution can be measured by measuring the temperature. Temperature is a measure of the average kinetic energy of molecules in a solution.

4 0
3 years ago
Pls someone help me with this question pls
OlgaM077 [116]

Answer:

D

Explanation:

4 0
3 years ago
Read 2 more answers
A bicycle tire is filled with air to a pressure of 100. psi at a temperature of 19C. Riding the bike on asphalt on a hot day inc
Zigmanuir [339]

Considering the direct relationship between pressure and temperature, the new pressure in the bicycle tire would be 63.01 psi

<h3>Gas law</h3>

The general gas laws is given by:

  P1V1/T1 = P2V2/T2

Where P1 = initial pressure V1 = initial volume T1 = initial temperature, P2 = final pressure, V2 = final volume, and T2 = final temperature.

In this case, P1 = 100 psi, V1 = 1, T1 = 19+273 = 292, P2 = ?, V2 = 1.4, T2 = 58+273 = 331

P2 = P1V1T2/T1V2

        = 100x1x292/331x1.4

                   = 63.01 psi

More on gas laws can be found here: brainly.com/question/1190311

5 0
2 years ago
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