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Dima020 [189]
3 years ago
5

Which of the following describes a compound?

Chemistry
1 answer:
Gemiola [76]3 years ago
8 0

A compound is two or more chemically combined elements. Fore example NaCl, CO2, H2O

You might be interested in
What example of mixture could be seperated using two or more techniques? Explain your answer
STatiana [176]
You can take two liquids of different densities (how much mass is in a given volume) and pour them into a funnel. An example is oil and water. When the mixture settles, the denser liquid will be at the bottom, and drips through the funnel first. This is a separation that you can just let occur naturally.
8 0
2 years ago
Organize the following list of atoms from lowest to highest Electronegativity:
Anon25 [30]

Answer:

Barium<Strontium<Calcium <Magnesium< Beryllium

Explanation:

Electronegativity is defined as the ability of an atom in a bond to attract the shared electrons of the bond towards itself.

Electronegativity is a periodic trend that decreases down the group and increases across the period.

Hence, if i want to arrange Beryllium, Barium, Strontium, Magnesium, Calcium in order of increasing electronegativity, i will have;

Barium<Strontium<Calcium <Magnesium< Beryllium

5 0
3 years ago
renata developed a hair dye additive that is guaranteed to cover grey hair. she granted the right to use this additive to a majo
kvasek [131]

What Renata has granted to the manufacturer of the colored hair dye is called a patent.

<h3>What is a patent?</h3>

A patent is a right given to a manufacturer to be the sole producer of a product for a given period of time. Usually, the patent has to last for a given number of years after which the technology becomes commonplace.

Hence, what Renata has granted to the manufacturer of the colored hair dye is called a patent.

Learn more about patent:brainly.com/question/12882864?r

#SPJ1

4 0
2 years ago
The combustion of propane may be described by the chemical equation C 3 H 8 ( g ) + 5 O 2 ( g ) ⟶ 3 CO 2 ( g ) + 4 H 2 O ( g ) C
Kipish [7]

Answer: 72 grams of O_2(g) are needed to completely burn 19.7 g C_3H_8(g)

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to molecular mass and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Putting in the values we get:

\text{Number of moles}=\frac{19.7g}{44g/mol}=0.45moles

C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g)

According to stoichiometry:

1 mole of C_3H_8 requires 5 moles of oxygen

0.45 moles of C_3H_8 require= \frac{5}{1}\times 0.45=2.25 moles of oxygen

Mass of O_2=moles\times {\text {Molar mass}}=2.25\times 32=72g

72 grams of O_2(g) are needed to completely burn 19.7 g C_3H_8(g)

7 0
3 years ago
The total number of atoms represented by the formula k3fe(cn)6 is:
Brut [27]
<span>K3Fe(CN)6

K - 3 atoms
Fe - 1 atom
C - 6 atoms
N - 6 atoms

Altogether : 3+1+6+6= 16 atoms</span>
4 0
3 years ago
Read 2 more answers
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