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Vsevolod [243]
3 years ago
15

A chemical reaction was used to separate a sample into its components. What conclusion about the sample can be formed based on t

he technique used? A.It was a pure substance. B It was a compound. C It was a heterogeneous mixture. D It was a homogeneous mixture
Chemistry
2 answers:
Vika [28.1K]3 years ago
6 0

Answer;

B It was a compound

Explanation;

A pure chemical compound is a chemical substance that is composed of a particular set of molecules or ions that are chemically bonded. Two or more elements combined into one substance through a chemical reaction, such as water, form a chemical compound.

A chemical compound can be either atoms bonded together in molecules or crystals in which atoms, molecules or ions form a crystalline lattice.  Unlike elements compounds can be broken down in chemical means.

olga_2 [115]3 years ago
3 0

Answer:

its a compound ez dubz 98 kill solo squad gameplay enjoy!

Explanation:

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Determine the number o( bonding electrons and the number of nonbonding electrons in the structure of CO_2. Enter the number of b
Rom4ik [11]

NOF (6,12)

CO2 (8,8)

BeF (4,12)

7 0
2 years ago
QUESTION 17
borishaifa [10]

Question 17:

False; cutting hair would change what it looks like but, braiding it keeps it the same substance it is.


Question 18 :

My best guess would either be A or D. I would lean more towards D because if there are different mixtures then it depends on what you are mixing.


Hope it helps in some way. <3

5 0
2 years ago
A block of ice is cooled from -0.5 degrees Celsius to -10.1 degrees Celsius. Calculate the temperature change, delta T, in degre
ss7ja [257]
Delta T= T final - T initial
Tfinal= -101.1 °C
Tinitial= -0.5 °C
•Delta T = -101.1°C - (-0.5°C)
=100.6°C

Kelvin= °C + 273
= -100.6 + 273
= 172.4 Kelvin
3 0
2 years ago
What is the difference between water and alcohol
Rudik [331]

Answer:

water is H2O having different structure than alcohol R-OH which means they have different properties too.

Explanation:

In water one oxygen atom  is covalently bound with  two hydrogen atoms while alcohol is an organic compound  having Oh group attached to the carbon chain.

Other than liquid water can occur in solid form that is ice and in gaseous form that is vapors too while alcohol only present in liquid form.

heat of evaporation of alcohol is lower than water means water need more heat to evaporate than alcohol that is why we can say alcohol having more cooling effect than water.

7 0
2 years ago
Unrestricted populations of organisms experience _____.
Fudgin [204]
Unrestricted populations of organisms experience Exponential growth. 

As a population reaches is carrying capacity there is an increase in competition for All of the above.
 Hope I helped. 
5 0
2 years ago
Read 2 more answers
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