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Morgarella [4.7K]

2 years ago

6

What is responsible for the whistling sound that often accompanies firework?

1 answer:

Naya [18.7K]2 years ago

8 0

The wistle is coming from all the chemicals including the fire you use to light the firework and a chemcial reaction is occuring which is the sound that is made because of this

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a. What condition must be met for an activated complex to result from the collision of reactant particles? b. Where, in terms of

weeeeeb [17]

Answer:

A. The conditions are:

I. Reactant particles must collide with the right orientation.

II. There must be effective collisions.

III. The reactant particles must possess enough energy to break old bonds so that new bonds can be formed.

B. The activated complex occurs where the maximum energy of the reaction is attained along the reaction pathway, that is, at the peak of the activation energy.

6 0

3 years ago

A gas has a pressure of 167.1 kPa. What is this pressure in atm?

Aleksandr-060686 [28]

Answer:

167100atm

Explanation:

167.1*1000=167100 atm

3 0

2 years ago

When solving a problem it is important to identify your given and needed units, but it is also important to understand the relat

UNO [17]

Answer:

See Explanation

Explanation:

Given

(a) to (d)

Required

Determine whether the given parameters can calculate the required parameter

To calculate either Density, Mass or Volume, we have

$Density = \frac{Mass}{Volume}$

$Mass = Density * Volume$

$Volume = \frac{Mass}{Density}$

(a) 432 g of table salt occupies 20.0 cm^3 of space

Here, we have:

$Mass = 432g$

$Volume = 20.0cm^3$

The above can be used to calculate Density as follows;

$Density = \frac{Mass}{Volume}$

$Density = \frac{432g}{20.0cm^3}$

$Density = 21.6g/cm^3$

(b) 5.00 g of balsa wood, density of balsa wood : 0.16 g/cm^3

Here, we have:

$Mass = 5.00g$

$Density = 0.16g/cm^3$

This can be used to solve for Volume as follows:

$Volume = \frac{Mass}{Density}$

$Volume = \frac{5.00g}{0.16g/cm^3}$

$Volume = 31.25cm^3$

(c) 32 cm^3 sample of gold density of 19.3 g/cm^3

Here, we have:

$Volume = 32cm^3$

$Density = 19.3g/cm^3$

This can be used to calculate Mass as follows:

$Mass = Density * Volume$

$Mass = 32cm^3 * 19.3g/cm^3$

$Mass = 617.6g$

(d) 150 g of iron, density of Iron = 79.0 g/cm^3

Here, we have

$Mass = 150g$

$Density = 79.0g/cm^3$

This can be used to calculate volume as follows:

$Volume = \frac{Mass}{Density}$

$Volume = \frac{150g}{79.0g/cm^3}$

$Volume = 1.90 cm^3$ <em>Approximated</em>

5 0

3 years ago

How are salts formed?

patriot [66]

Explanation:

the process where the acids and bases neutralize each other to form salt and water is known as neutrilazation

6 0

3 years ago

Read 2 more answers

What is the most precise measurement this beaker can give?

allochka39001 [22]

<span>a.the nearest 1 ml

1 mL is much more precise than 100 mL because 1 mL is a very small and precise unit of measurement</span>

8 0

3 years ago