The pairs of solutions produce a precipitate when combined are NH4Cl and AgNO3. Therefore, option B is correct.
What do you mean by precipitation ?Chemical precipitation is the process of turning a liquid into a solid by either making the liquid insoluble or making it extremely saturated.
The chemical reaction between potassium chloride and silver nitrate, in which solid silver chloride is precipitated out, is one of the best examples of precipitation reactions. This is the precipitation reaction's byproduct, the insoluble salt.
Thus, The pairs of solutions produce a precipitate when combined are NH4Cl and AgNO3, option B is correct.
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This protein takes oxygen from hemoglobin in order to
O break down stored fats for energy.
O transport water-insoluble lipids in the bloodstream.
transport oxygen from the lungs to tissues around the body.
O store it for muscle cells.
Answer:
i'm pretty sure it's 'transport oxygen from the lungs to tissues around the body'
Answer:
Transportation of Oxygen from Lungs to Tissues
need help on dis plz that would be big help
Identify the base in this acid-base reaction: 2 upper H upper C subscript 2 upper H subscript 3 upper O subscript 2 plus upper M g (upper O upper H) subscript 2 right arrow upper M g (upper C subscript 2 upper H subscript 3 upper O subscript 2) subscript 2 plus 2 upper H subscript 2 upper O. HC2H3O2 Mg(OH)2 Mg(C2H3O2)2 H2O
Answer:
Mg(OH)2
Explanation:
Magnesium hydroxide is the base since it has hydroxyl ions.
Mg(OH)₂ is the base in this acid-base reaction.
What is a Base?This can be defined as a chemical substance which donates electrons, accepts protons, or releases hydroxide (OH-) ions in aqueous solution.
Mg(OH)₂ has the presence of hydroxide (OH-) ions in its compound which was why it was chosen as the most appropriate choice.
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A 1.0 mol sample of which of the following compounds has the greatest mass?
A) NO
B) NO2
C) N2O
D) N2O5
Answer:
D) N2O5
Explanation:
The molar mass of a substance is defined as the mass of this substance in 1 mol. To solve this question we must find the molar mass of each option:
Molar mass NO:
1N = 14g/mol*1
1O = 16g/mol*1
14+16 = 30g/mol
Molar mass NO2:
1N = 14g/mol*1
2O = 16g/mol*2
14+32 = 46g/mol
Molar mass N2O:
2N = 14g/mol*2
1O = 16g/mol*1
28+16 = 44g/mol
Molar mass N2O5:
2N = 14g/mol*2
5O = 16g/mol*5
28+80 = 108g/mol
That means the compound with the greatest mass is:
D) N2O5Identify the element that cannot participate in nuclear fission reactions. (Hint: Think about the size of the atom.)
A.
hydrogen
B.
uranium
C.
thorium
D.
plutonium
how long ago did the Atlantic Ocean separate Canada from Ireland....plz answer I have no idea lol
Answer:
Around 150 million years ago
Explanation:
The Atlantic ocean was formed during the Jurassic period
Answer:
200 millon years ago
Explanation: please give me brainliest
I'm like a highway system in your body. I carry necessary supplies to the parts of your body that need llen, allu
carry away wastes so your body can get rid of them. I contain blood vessels and am a system with a lot of heart.
What system am I?
1:digestive system
2:circulatory system
3: muscular system
4:skeletal system
plssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss sssssssssssssssssss sssssssssssssssssss sssssssssssssssssss sssssssssssssssssss answer this correctly
Answer:
The circulatory system
Explanation:
Hope this helps
Use the following periodic table to identify the letter(s) that match each of the statements below.
(Each element may be used once, more than once or not at all)
Answer:
l and t
Explanation:
because they are in group one
Answer:
L & T
since are found in the same group.
Which gas would you expect to have the fastest diffusion rate?
A. Ammonia (NH3)
B. Oxygen (O2)
C. Nitrogen (N2)
Ice that contains a small amount of dissolved air is an example of what type of solution?
Answer:
a gas dissolved in a solid
Explanation:
The ice that comprise of small amount of dissolved air represent the type of soluton that have a solid dissolved in a gas.
What is gas?Gas could be considered as the one of the four fundamental states of matter.
A pure gas should be made of individual atoms, elemental molecules that consist from one type of atom, or compound molecules that consist of a variety of atoms.
A gas mixture could be in the form of air that comprise a variety of pure gases.
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Match each chemical reaction with the type of reaction that best describes it
Explanation:
Types of Chemical ReactionCombination Reaction.Decomposition Reaction.Displacement Reaction.Double Displacement Reaction.Oxidation and Reduction Reaction.stay safe healthy and happy.At 40 mph, how long does it take to travel 64 miles
Which could be the pH of an aqueous solution with a H3O+ ion concentration that is less than its OH- ion concentration?
A. 2
B. 3
C. 4
D. 9
Answer:
Explanation:
You can think of pH as "parts Hydrogen ion," but remember that the pH scale is "backwards." The pH scale ranges from 0 to 14, with zero being the most acidic (highest concentration of H+) and 14 being the most basic.
The pH of an aqueous solution will be:
D. 9
When the [tex]H_3O^+[/tex] ion concentration is less than its [tex]OH^-[/tex] ion concentration.
What does pH tell?pH is used to indicate whether a solution is acidic or alkaline depending upon the pH of the solution. If pH is below 7 then the solution is acidic, if the pH is above 7 then the solution is basic and if the pH is 7 then the solution is neutral.
When the [tex]H_3O^+[/tex] ion concentration is less than its [tex]OH^-[/tex] ion concentration this means that the solution has more [tex]OH^-[/tex] ion and this makes the solution basic.
Thus, correct option is D, i.e. pH is 9.
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A 50.5 L flask contains 3.25 mol of an unknown gas at 288.6 K, what is the pressure of
this gas?
Answer:
1.52atm is the pressure of the gas
Explanation:
To solve this question we must use the general gas law:
PV = nRT
Where P is pressure in atm = Our incognite
V is volume = 50.5L
n are moles of gas = 3.25moles
R is gas constat = 0.082atmL/molK
And T is absolute temperature = 288.6K
To solve pressure:
P = nRT / V
P = 3.25mol*0.082atmL/molK*288.6K / 50.5L
P = 1.52atm is the pressure of the gas
Which wave has the highest frequency?
1
2
3
4
no link or i will report
Answer:
4
Explanation:
because number 4 moves continuous
Determine the mass of MgCl2 needed to create a 100. ml solution with a concentration of 3.00 M.
Explanation:
[tex]1000ml \: contain \: 3 \: moles \\ 100 \: ml \: will \: contain \: ( \frac{100 \times 3}{1000} ) \: moles \\ = 0.3 \: moles \\ RFM = 95 \\ 1 \: mole \: weighs \: 95 \: g \\ 0.3 \: moles \: weigh \: ( \frac{(0.3 \times 95)}{1} \: g \\ = 28.5 \: g \: of \: magnesium \: chloride[/tex]
A ______ in medicine is a form of scientific argumentation in which evidence is used to rule out claims and support the best conclusion.
fill in the blank
Answer: Scientific reasoning
Explanation:
A scientific reasoning can be defined as the justification which connects the evidence with that of the claim and it rules out all those claims that are not supported by any evidence. It explains the fact that how evidence can support a claim and scientifically acceptable conclusion can be drawn. An argument is always based on one or more claims which can either be true or evidentially proved.
If you were to add salt to water , what temperature would you expect it to boil? Assume you’re at sea level
100 c
More than 100 c
Less than 100 c
Answer:
100c
Explanation:
This refers to the most powerful means of communicating confidence and conviction A.Posture B.eye contact C.body movement
please
please
please
please
ples
please
please
please help me
Answer:
c
Explanation:
the way you move explains how confident you are
Describe at least 3 phases of thr water cycle and make sure to explain The state of matter of water at each of the phases
O nióbio é um metal encontrado em jazidas naturais, principalmente na firma de óxidos. Em uma jazida que contenha nióbio com número de oxidação +5, a formula do óxido predominante desse metal corresponde a:
Answer:
what
Explanation:
Explain why crystallisation can't be used to prepare calcium carbonate.
Explanation:
The mechanisms by which amorphous intermediates transform into crystalline materials are poorly understood. Currently, attracting enormous interest is the crystallization of amorphous calcium carbonate, a key intermediary in synthetic, biological, and environmental systems. Here we attempt to unify many contrasting and contradictory studies by investigating this process in detail. We show that amorphous calcium carbonate can dehydrate before crystallizing, both in solution and in air, while thermal analyses and solid-state nuclear magnetic resonance measurements reveal that its water is present in distinct environments. Loss of the final water fraction—comprising less than 15% of the total—then triggers crystallization. The high activation energy of this step suggests that it occurs by partial dissolution/recrystallization, mediated by surface water, and the majority of the particle then crystallizes by a solid-state transformation. Such mechanisms are likely to be widespread in solid-state reactions and their characterization will facilitate greater control over these processes.
An apple appears red when struck by white light. This appearance is because the red light is reflected and the other colors are absorb. What color will this apple appear to be when struck by blue yet.
A. black
B. blue
C. red
D. white
There is 1 mole of propane (C3H8) for every 3 moles CO2. How many moles of CO2 would there be if you started with 2 moles of propane instead of 1?
Answer:
[tex]1 \: mole \: of \: propane \: reacts \: with \: 3 \: moles \: of \: carbondioxide \\ 2 \: moles \: of \: propane \: react \: with \: \frac{2 \times 3}{1} moles \\ = 6 \: moles \: of \: carbondioxide[/tex]
In the chemical laboratory, why do scientists use a mortar and pestle?
A. To increase surface area of a solute
B. To decrease surface area of a solute
C. To increase temperature of a solute
D. To decrease temperature of a solute
Answer:
A. To increase surface area of a solute
Explanation:
How many Oxygen atoms are in 2NA(OH)3
Answer:
3 oxygen atom
hope it helps.
Answer:
Explanation:
There are 3 oxygen atoms.
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What are the different types of excretion?
Answer:
There are 4 excretory organs in human: The skin, the lungs, the liver, and the kidney (Urinary system). The skin excretes the sweat outside the body through numerous pores in the surface of this organ. Sweat is a mixture of three metabolic wastes: water, salts, and urea.
zA 25.0 mL sample of an acetic acid solution is titrated with a 0.175 M NaOH solution. The equivalence point is reached when 12.5 mL of the base is added. The concentration of acetic acid in the sample was ________ M. A 25.0 mL sample of an acetic acid solution is titrated with a 0.175 M NaOH solution. The equivalence point is reached when 12.5 mL of the base is added. The concentration of acetic acid in the sample was ________ M. 0.365 0.119 0.0875 0.175 none of the above
Answer:
0.0875M of Acetic Acid
Explanation:
Based on the reaction of acetic acid (HX) with sodium hydroxide (NaOH):
HX + NaOH → NaX + H₂O
1 mole of acetic acid reacts with 1 mole of NaOH
That means the moles of sodium hydroxide added = Moles the acetic acid at the equivalence point.
To solve this question we have to find the moles of NaOH = Moles HX. With the moles and the volume (25.0mL = 0.0250L) we can find the molarity of the acetic acid:
Moles NaOH = Moles Acetic acid:
12.5mL = 0.0125L * (0.175mol / L) = 0.00219 moles Acetic Acid
Molarity acetic acid:
0.00219 moles Acetic Acid / 0.0250L =
0.0875M of Acetic Acidyou had a 5 gram sample , how much of the original substance would remain after 1 half- life?
what is the half life though?
The intermolecular forces present between two molecules ofCH3-CH2-CH2-CH2-CH2-O-H are ________.
Answer:
Hydrogen Bonding!
This is because of two reasons:
1. Hydrogen is attatched to a very electronegative atom.
2. The electronegative atom it is attatched to has a lone pair.
Hope this helps!
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How many atoms are in 1.204x10^22 moles of arsenic?
Answer:
0.02 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
We have
[tex]n = \frac{1.204 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.02[/tex]
We have the final answer as
0.02 molesHope this helps you