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4 years ago

Carbon monoxide pure substance or mixture and why

2 answers:

8 0

Carbon monoxide is a mixture cause it's a mixture of
different chemical compounds

such as air and CO but they're chemically mixed together which makes it no longer pure

Dafna11 [192]4 years ago

8 0

When two elements combine then it’s a mixture not a put substance. So carbon monoxide is a mixture.

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A 12.0 V battery has as 80.0 Ohm

Vesna [10]

Potential difference=V=12V
Resistance=80ohm=R
Current be I

Using ohms law

$\\ \sf\longmapsto \dfrac{V}{I}=R$

$\\ \sf\longmapsto I=\dfrac{V}{R}$

$\\ \sf\longmapsto I=\dfrac{12}{80}$

$\\ \sf\longmapsto I=0.15A$

6 0

3 years ago

Which substance is an acid ?

DENIUS [597]

Answer:

if you like my answer markme barinlest:)

Explanation:

An acid is a substance or compound that releases hydrogen ions (H+) when in solution. In a strong acid, such as hydrochloric acid (HCl), all hydrogen ions (H+), and chloride ions (Cl-) dissociate (separate) when placed in water and these ions are no longer held together by ionic bonding.

6 0

3 years ago

Read 2 more answers

A baseball has a mass of 0. 45 kg and is thrown with a speed of 25 m/s. What is the momentum of the baseball? 0. 018 kg â€˘ mete

aleksandr82 [10.1K]

Answer:

11 Kg.m/s

Explanation:

P=mv

P=0.45*25

P=11.25 Kg.m/s

3 0

2 years ago

A cast iron paperweight is in the shape of a half-sphere with a diameter of 8.2cm. The cast iron has a density of 7.3g/cm^3. Wha

Mnenie [13.5K]

Answer: C

1054 g

Explanation:

Given that the object is in the shape of semi sphere with diameter of 8.2cm. And density of 7.3g/cm^3.

From definition of density,

Density = mass/volume

Volume of a half - sphere = 2/3πr^3

Volume = 2/3 × 3.143 × 4.1^3

Volume = 144.35 cm^3

Let make mass the subject of formula

Mass = Density × volume

Mass = 7.3 × 144.35

Mass = 1053.74g

The mass of the paperweight, in grams is 1054

8 0

3 years ago

How does surface tension relate to the molecular structure of water

ki77a [65]

Surface tension is the elastic tendency of a fluid surface!

5 0

3 years ago