3 years ago

When potassium chlorate decomposes to potassium chloride and oxygen gas is it a physical or chemical change?

Chemistry

1 answer:

scZoUnD [109]3 years ago

4 0

It is an example of a Chemical change.

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Calculate the inner diameter of the steam tube between the boiler and the high pressure turbine if the average velocity of the s

stich3 [128]

Answer:

The inner diameter of the steam tube is 0.1185 m.

Explanation:

$m=\rho \times A\times v=\frac{1}{V}\times A\times v$

m = mass flow rate

$\rho$ = density of the liquid

V=specific volume = $\frac{1}{\rho }$

v = velocity of the liquid

A = area of cross-section

Diameter of the cross-section = d = 2r

Given: m = 18 kg/s, v = 60 m/s,A=?, $V = 0.036793 m^3/kg$

$18 kg/s=\frac{1}{0.036793 m^3/kg}\times A\times 60 m/s$

$A=0.0110379 m^2$

Area of the inner cross section = $\pi r^2=\pi \frac{d^2}{4}$

$\pi \frac{d^2}{4}=0.0110379 m^2$

d = 0.1185 m

The inner diameter of the steam tube is 0.1185 m.

5 0

4 years ago

7.6 The diagrams show the atoms in four different substances. Each circle represents an atom.

Illusion [34]

Answer:

A and C represent elements while B and D represent Compounds

Explanation:

chemical elements cannot be broken down into simpler substances by any chemical reaction. While A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds

8 0

2 years ago

We participate in the ______________________cycle every time we breathe. tectonic nitrogen phosphorus carbon-oxygen

podryga [215]

Carbon-Oxygen
We breathe in oxygen, we breathe out carbon dioxide.

8 0

4 years ago

Which of the following is an endothermic reaction?

olga2289 [7]

I think is b.an explosion hope it works

3 0

3 years ago