2 years ago

Question 1 (1 point)

Chemistry

1 answer:

Colt1911 [192]2 years ago

8 0

Answer:

Both are made up of two substances that are not chemically combined.
oxygen (O2)
carbon dioxide (CO2 )
air (N2 mixed with O2 and CO2)
Pure substances cannot be separated by physical means.

Explanation:

You might be interested in

If you negate reaction 2 and combine the reactions, which substances do not cancel?

olya-2409 [2.1K]

"Mg, MgO, and O2 "

THOSE ARE THE ANSWERS!

4 0

3 years ago

Which of the following describe chemical properties?

KengaRu [80]

Sugar burns in air.....................................

6 0

2 years ago

Is it general principal that more abundant isotopes exist in

Nataly_w [17]

sjnsjshdjahshabbxbabsbasjsjjsjs

5 0

2 years ago

Help me please!! What is the name of the alkyne molecule

juin [17]

Answer:

ans is (2) 2,4- hexadiene

5 0

3 years ago

I really need the answers please!

krek1111 [17]

1) D = 13.6 g / mL

2)ethyl alcohol weighs 158g

3)ρ _copper = 8.9 g $cm^{3}$

Explanation:

D = m / V

=306.0 g / 22.5 mL

D= 13.6 g / mL

density = mass / volume

mass = density × volume

=0.789g /ml × 200.0 ml

M=158g

Ethyl alcohol weighs 158g

ρ (density) = Mass / Volume

ρ _copper = 1896 g / 8.4cm × 5.5cm × 4.6cm

= 1896g / 212.5 $cm^{3}$

ρ _copper=8.9 g $cm^{3}$

4 0

2 years ago