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4 years ago

Which of the following is a chemical property of matter?

Physics

2 answers:

adoni [48]4 years ago

7 0

Answer:

The correct answer is combustibility

Explanation:

A chemical property of a matter is a property in which a matter has the tendency to change its form through chemical reaction(s).

A matter is said to have combustibility property if it can undergo combustion. Combustion is a chemical process in which a substance burns in excess oxygen to produce carbon dioxide and water.

Consider the equation below

CH₄ + O₂ ⇒ CO₂ + H₂O

The equation above shows methane burning in excess oxygen to produce carbon dioxide and water

mezya [45]4 years ago

5 0

The answer is electrical conductivity!

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Which statement did John Dalton make about atoms?

Roman55 [17]

Answer:

B). the atom is made up of smaller particles

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3 years ago

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What does kidney disease affect the immune system

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It can hurt and harm the body on many different and levels

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4 years ago

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A 2.3 kg , 20-cm-diameter turntable rotates at 110 rpm on frictionless bearings. Two 460 g blocks fall from above, hit the turnt

boyakko [2]

Answer:

The correct solution is "64 RPM".

Explanation:

The given values are:

Mass,

M = 2.3 kg

Diameter,

D = 20 cm

i.e.,

= 0.2 m

Rotates at,

N = 110 rpm

Mass of block,

m = 460 g

i.e.,

= 0.46 kg

According to angular momentum's conservation,

⇒ $I_1\omega_1=I_2\omega_2$

then,

⇒ $I_1=\frac{1}{2}MR_2$

On substituting the values, we get

⇒ $=\frac{1}{2}\times 2.3\times (0.1)^2$

⇒ $=\frac{1}{2}\times 0.023$

⇒ $=0.0115 \ kg \ m^2$

Now,

⇒ $I_2=I_1+2mR^2$

$=0.0115+2\times 0.46\times (0.1)^2$

$=0.0115+0.0092$

$=0.02 \ kg \ m^2$

then,

⇒ $0.0115\times 110=0.02\omega_2$

⇒ $1.265=0.02\omega_2$

⇒ $\omega_2=\frac{1.265}{0.02}$

⇒ $=63.25 \ or \ 64 \ RPM$

7 0

3 years ago

The Moon has a mass of 7.35 * 1022 kg, and a radius of 1.737 * 106 m. Based on

suter [353]

Answer:

1.63 $ms^{-2}$

Explanation:

The equation $g = \frac{G*M}{R^2}$ would be used where:

g = acceleration due to gravity

G = universal gravitational constant (6.67408 × $10^{-11}$ $m^{3} kg^{-1} s^{-2}$ )

M = mass

R = radius.

assuming the values following both 10s of the mass and radius are their exponents, which is a little confusing, the values given would simply be substituted.

Anyone can correct me if I'm wrong.

7 0

3 years ago

a block is suspended 5 m above the ground if the block has a mass of 20 kg how much potential energy is stored in the block (g=

ozzi

Answer:

P.E = 980 Joules

Explanation:

Given the following data;

Mass = 20 kg

Height = 5m

Acceleration due to gravity = 9.8 m/s²

To find the potential energy stored in the block;

Mathematically, potential energy is given by the formula;

$P.E = mgh$

Where,

P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Substituting into the equation, we have;

$P.E = 20 * 9.8 * 5$

P.E = 980 Joules

3 0

3 years ago