Answer:
pour the rock salt mixture throught a filter made from paper and allow the liquid to filtrate .
Explanation:
Separating Sand and Salt
Probably the easiest method to separate the two substances is to dissolve salt in water, pour the liquid away from the sand, and then evaporate the water to recover the salt.
Pour the liquid through a paper filter made of rock salt mixture and let it filter, after complete filtration we obtain crystals of salt.
What is filtration?Filtration is defined as the technique of removing solid particles from a liquid or gaseous fluid by passing the fluid through a filter media while keeping the solid particles behind.
It can also be defined as a physical method that uses a filter media with a complicated structure that only allows fluid to pass through to separate solid matter and liquid from a combination.
There are six types of filtration.
Vacuum filtrationCentrifugal filtrationGravity filtrationCold filtrationHot filtrationMultilayer filtrationMixture is defined as a substance that is composed of two more chemical compounds or substances that do not chemically mix.
There are two types of mixture.
Homogenous mixtureHeterogenous mixtureThus, pour the liquid through a paper filter made of rock salt mixture and let it filter, after complete filtration we obtain crystals of salt.
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Which of these is a common to all chemical changes
A) A new change of sate occurs
B) A change of color occurs
C) a new substance is produced
D) heat is released into the air
Answer:
c
a new substance is produced
All of the following affect toxicity of a substance except*
origin of the substance
nature of exposure
duration
dosage
Answer:
durage
Explanation:
durage just doesn't make sense compared to the other 3
Answer:
Origin of the substance
Explanation:
Origin of a substance doesnt affect toxicity but all other options do
explain the role of sulphuric acid in limit test for iron
A sample of gas at 1.0°C is expanded at constant pressure from 10 L to 15 L. The final temperature is:
a: 1.50 °C
b: 411 °C
c: None of all
d:138 °C
e: 183 °C
Answer:
y
Explanation:
yea Mami you know like for real I feel you you know iam seeing but tomorrow I see the equation for the last works positive AAAAA
What is surface tension and why is it important?
Answer:
What is surface tension?
Explanation:
Surface tension and droplets: Surface tension is responsible for the shape of liquid droplets. Although easily deformed, droplets of water tend to be pulled into a spherical shape by the cohesive forces of the surface layer.
Surface tension forces between mucosal surfaces play an important role in the pathogenesis of the disease. The obstruction of upper airway elicit the activation of autonomic nervous system, hypoxemia, and arousal from sleep.
Hope it helps
A 5.60 g sample of a weak acid with
Ка 1.3 x 10-4 was combined with 5.00 mL of
5.80 mol L-1 NaOH and the resulting solution
was diluted to 750 mL. The measured pH of the
solution was 4.35.
What is the molar mass of the weak acid
Answer:
pKa = - log Ka = - log (1.3 * 10^-4) = 3.886 5.20 mL of 6.20 M NaOH = 0.00520 L * 6.20 mole…
Explanation:
find the major product
The answer is B.
Back-side attack by water at the more substituted carbon.
You can follow the steps.
Step1: Electrophilic attack forms a bromonium ion intermediates.
Step2: Back-side attack by water at the more substituted carbon opens the bromonium ion intermediates.
Step3: H2O removes a proton from the intermediates.
When two atoms bond chemically it is because of the interaction between
A) the nuclei of each atom.
B) the protons in each atoms.
C) all electrons in the atoms.
D) the valence electrons in each atom.
Answer:
C
Explanation:
It depends on the bonding for an explanation.
If one atom is a metal and one is a non metal it will be ionic. This is because one atom transfers its electron to the other atom giving them both a charge. They will then be bonded due to opposite forces of attraction.
If both atoms are non metals it will be covalent. Electrons pair together in the center of two atoms that have merged together and they share their electrons.
(Makes more sense with diagrams)
What is the hydroxide concentration in a 0.20 M potassium acetate solution?
Answer:
Molar concentration of potassium hydroxide
= 0.27 Mol liter/approx
What is the source of the magma that erupts from a volcano?
outer core
inner core
mantle
Earth's oceans
Answer:
the magma comes from the mantle
Sodium (Na) and chlorine (CI) combine to form a __ of salt (NaCI)
A. Mixture
B. Molecule
Answer:A mixture
Have a nice day :D
High tides are located at__
A an B
B an D
B an C
Answer:
b and c since they bulge
Explanation:
introduced in the 13th-16th? century from sabah in the reign of the sultanate of sulu, and became extinct on maguindanao or were transported back to sabah. Bone fragments are the only proof left behind of their existence ...ill mark u as brainliest
The Elephant Maximus is the species that was introduced and later became extinct on Maguindanao.
Extinction occurs as all members of a species die, and therefore the species disappears. This includes complete extinction or extinction of the species in a specific zone.
In the case of the Elephant Maximus, which is known as the Asian Elephant, this species became extinct in a region known as Maguindanao in the Philippines.
This partial extinction occurred as the elephants from this zone were taken to Sabah in Malaysia from the 13th century to the 16th century. This occurred because the Sultans of this region considered this elephant to be a valuable and even sacred animal.
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what is the molarity of Li in a solution that contains of 46.552ppm lithium ferrocyanide Li3fe(cn)6
Answer:
hgfdjsuejssj_uyghgjiyr656⁸8⁴83jbv
helppp! ill give brainliest
What is this answer to this problem
Answer:
gdhjvdhihfhddjcuh
dhsgbeyfgjgjjkk
tjfhh
gjgu
Which of the following molecules is nonpolar?
Ο Α. CO2
Ο Β. SO,
Ο Ο Ο Ο
O C. CO
D. NO
Answer:
CO2
Explanation:
There are two types of moleculesPolarNon polarNon polar molecules are insoluble in water .
Option A
[tex]\sf \longmapsto co_{2}[/tex]
[tex]\sf Co_{2}[/tex] is a non polar molecule.[tex]\sf \longmapsto\sf Co_{2}[/tex]
Lewis Structure =
[tex]\sf \longmapsto\sf \: o \: = c = o[/tex]
[tex]\sf \longmapsto4 + 6(2)[/tex]
[tex]\sf \longmapsto16[/tex]
Non polar molecules are non-soluble in water.If the sample has a density of 2.71 g/cm3 , how many oxygen atoms does it contain?
Answer:
djxgfchkgvjhbkjlnk:Hg/ufy
Explanation:
fzdxgfchg,jv.hkbjnj.jhcgbc
helpppppppppppppppppppppppppppppppppp
Answer:
the drops of liquid are coming from the decreases. they are formed as the motion of the water particles in the air gas. this change in motion cause air in the air to change from a liquid to a water
Hello there!
The drops of liquid are coming from the air. They are formed as the motion of particles in the air decreases. This change in motion causes water in the air to change from a liquid to a gas.
Hope this helps you!
~Just a joyful teen
[tex]SilentNature :)[/tex]
✿❀❁❀✿Use the bond enthalpy data given to estimate the heat released when 6.50 g of
nitrogen gas reacts with excess hydrogen gas to form ammonia at 25C.
Answer:
24.9
Explanation:
-
What elements are in H2F5BLi and how many atoms are in each element.
20 point plus brainliest
Answer:
2 hydrogen
5 fluorine
1 boron
1 lithium
How many grams of pure aluminum could be produced from 999 g of aluminum oxide?
Answer:
Explanation:
First, calculate the molar mass of Aluminum Oxide (Al2O3), by multiplying the number of the constituent atoms, by their relative atomic abundances . Inserting the atomic masses into the equation gives you . Then find the percent of Aluminum by mass, in Aluminum Oxide. Finally, set up an equality, where 53.02% of the mass of Aluminum Oxide, is 999 grams of Aluminum
In order for a light bulb to be turned on in a circuit, it must have what kind of switch?
Answer:
Both switches must be closed in order for the circuit to be complete and for the bulb to light. (This would indicate the 'armed' status of this burglar alarm.) Magnetic switches come in 2 varieties - "Normally Closed" and "Normally Open". These 2 terms describe the state of the switch when it is NOT being controlled by the magnet.
Explanation:
Why would you expect the materials used to make pot holders to be poor conductors of heat?
Answer:
Pot holders are meant to protect your hand from the heat of the pot, and so it would need to be a poor conductor of heat in order to do its job correctly. Silicon dioxide is a solid at room temperature and methanol is a liquid.
The ancient Egyptians planted crops and raised
animals for food as early as?
100 AD.
2000 BCE.
5200 BCE.
2560 BCE.
What happens to excess heat produced in the muscle during contraction and relaxation
Answer:
Calcium is then pumped back into the sarcoplasmic reticulum breaking the link between actin and myosin.
Explanation:
Actin and myosin return to their unbound state causing the muscle to relax. Alternatively relaxation (failure) will also occur when ATP is no longer available.
State TRUE or FALSE : Synthetic fibers resists fire.
All fabrics will burn, but some are more combustible than others.
hope it helps
What is volume?
A. The amount of space an object takes up
B. The amount of matter in an object or substance
C. The length of an object
D. The number of particles in an object or substance
Answer:
Volume is the amount of space an object takes up. I hope this helps you! :D
How do you prepare a demi-glace?
Answer:
Explanation:
sory i dont know
does ch3 have resonance structure?
Answer:
yes
Explanation:
if u watch or look closely u will observe it
The CH₃ has resonance structures as it has odd number of hydrogen atoms.
In chemistry, resonance, also called mesomerism, is a way of describing bonding in certain molecules or polyatomic ions by the combination of several contributing structures ,also variously known as resonance structures or canonical structures into a resonance hybrid (or hybrid structure) in valence bond theory. It has particular value for analyzing delocalized electrons where the bonding cannot be expressed by one single Lewis structure.
Thus, CH₃ has resonance structures as it has odd number of hydrogen atoms.
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