Answer:A
Explanation:
what is the molarity of an hcl solution if 50.0 ml is neutralized in a titration by 40.0 ml of 0.400 m naoh? group of answer choices 0.200 m 0.280 m 0.320 m 0.500 m
The molarity of an HCl solution if 50.0 ml is neutralized in a titration by 40.0 ml of 0.400M NaOH is 0.320 M.
HOW TO CALCULATE MOLARITY:
The Molarity of an acid when involved in a titration procedure can be calculated by using the formula below:M1V1 = M2V2
Where;
M1 = molarity of acid (M)M2 = molarity of base (M)V1 = volume of acid (mL)V2 = volume of base (mL)According to this question,
M1 = ?M2 = 0.400MV1 = 50 mLV2 = 40 mLM1 × 50 = 0.400 × 40
50M1 = 16
M1 = 16 ÷ 50
M1 = 0.32M
Therefore, the molarity of an HCl solution if 50.0 ml is neutralized in a titration by 40.0 ml of 0.400M NaOH is 0.32 M.Learn more at: https://brainly.com/question/8732513?referrer=searchResults
is it true or false when the there are too many protons making the nuclei unstable, it will undergo a positron decay and a proton will turn into a neutron.
Answer:
True
Explanation:
As the number of protons in the nucleus increases, the number of neutrons needed for a stable nucleus increases even more rapidly.
Which of the following statements is true?
a. An ion is negative if it has more protons than it
has electrons.
b. An ion is negative if it has more electrons than
it has protons.
c. An ion is neutral if it has an equal number of
electrons and protons.
d. An ion is positive if it has more electrons than it
has protons.
e. An ion is positive if it has more protons than it
has neutrons.
Answer:
E- an ion is positive if it has more protons than it has neutrons
The specific heat of wood is 2.03 J/g.°C. How much
heat is needed to convert 225 g of wood at -15.0°C to
10.0°C?
Answer:
11419 J/g/ 11.419 KJ/g
Explanation:
H=MCQ
H=225×2.03×(-15-10)
H=225×2.03(25) Note; negative sign is of no use
H=11419J/g
what is the purpose of an auxiliary complexing agent?
Answer:
prevent hydroxide formation
Explanation:
Calculate the number of moles of NH3 formed by the reaction of 2 moles of N2 and 2 moles of H2,N2(g) + 3H2(g) forms 2NH3(g)
Answer:
we have to find the number of moles of NH₃ formed by reaction of 2 moles of N₂ and 2 moles of H₂. ... ∴ 2 moles of hydrogen will give = 1.33 moles of ammonia. therefore the no of moles of ammonia after the reaction would be 1.33 moles
hii thank you for helping me for that question please give me now this question define the air polution
Answer:
A mixture of solid particles and gases in the air.
Explanation:
Air pollution is a mixture of solid particles and gases in the air. car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part of air pollution in cities. When ozone forms air pollution, it's also called smog.
Air pollution can be defined as the presence of toxic chemicals or compounds (including those of biological origin) in the air, at levels that pose a health risk. In an even broader sense, air pollution means the presence of chemicals or compounds in the air which are usually not present and which lower the quality of the air or cause detrimental changes to the quality of life (such as the damaging of the ozone layer or causing global warming).
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What is the Golgi body made of?
O integral proteins
O large steroids
O RNA
O the same thing as the cell membrane
Explanation:
integral proteins...nns
what if water didnt have a negative charge?
Answer:
Explanation:
It would be positively charge
how to make slime without borax or contact solution
Answer:
lysol and glue pretty simple.
Explanation:
Answer:
glue, and some laundry detergent.
Explanation:
only some laundry detergents work.
for a butter slime all you need is Elmer's wood glue, and gel shaving foam it makes a thick butter like consistency slime.
if you want to get fancy you can add a drop of food coloring and sparkles. these work good for me, you should give them a try. thank you and have a great day! if you like my answer please mark brailyist thanks again. if you have any questions please feel free to ask me! thanks again.
Predict the ions that form when magnesium(group IIA) and nitrogen (group VA) react:.
Answer: Mg²⁺ & N³⁻
Explanation:
Since Magnesium is in group 2, then it favors losing two electrons forming a cation with a charge of +2 ( Mg²⁺).
Since Nitrogen is in group VA, it favors gaining three electrons forming the anion with charge -3 (N³⁻).
in the reaction of aluminum metal and oxygen gas to make aluminum oxide, how many moles of aluminum will react with 0.80 grams o2?
Answer:
When 6.38 moles of O2 and 9.15 moles of Al react, the ratio of aluminum to oxygen is 9.15/6.38 = 1.434. This shows that all of the oxygen is consumed before the aluminum and when the reaction ends the reactant aluminum is left. The number of moles of Al2O3 formed is approximately 4.25 moles.
The distance from one crest to the next crest is ____
Answer:
Wavelength is the distance from one crest to another, or from one trough to another, of a wave (which may be an electromagnetic wave, a sound wave, or any other wave). Crest is the highest point of the wave whereas the trough is the lowest.
Explanation:
Hope this helps!
Answer:
Wavelength!
Explanation:
Hope this helps, please give me brainliest. ;)
Suggest one peice of laboratory apparatus which is suitable to be used for transferring the concentrated acid into a beaker. Explain your answer
Answer:
safety hand gloves face masks
Explanation:
Which of the following pairs of elements could NOT react to form an ionic compound ? Check all that apply
Co and Br
C and O
K and F
Ag and O
Answer:
Ag and o
Explanation:
because they are not metals but not metals
Số amin bậc một có cùng công thức phân tử C3H9N là
A. 3. B. 1. C. 2. D. 4
Answer:
A.3
Three primary amines
Ba amin chính
1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p2
Answer:
batqyqy6w
Explanation:
We may suspend accounts that violate the Brainly Code of Conduct. Look for a follow-up email.
1. What amount of ammonia (in moles) is produced by the reaction of 4.00 mol H2 with 3.00 mol Nz?
3 H2(g) + N2(g) → 2 NH3(g)
3 H₂ + N₂ → 2 NH₃
↓ ↓
4 mol 3 mol
Since the moles of N₂ is the smaller of the two reactants, then N₂ is the limiting factor (the reactant that will decide how much ammonia is produced since it has the smaller amount of moles). ∴ we have to use it in calculating the number of moles of ammonia
The mole ratio of N₂ to NH₃ based on the balanced equation is 1 to 2.
∴ the moles of NH₃ = moles of N₂ × 2
= 3 moles × 2
= 6 moles
hi everyone can anyone help with this, the question and diagram is in the pic thx!
Answer:
QP
Explanation:
P has 9 electrons.
Electronic Configuration : 2, 7
Valence electrons : 7
P needs 1 electron to get stable electronic configuration.
Q has 3 electrons.
Electronic Configuration : 2, 1
Valence electrons : 1
P needs to loose 1 electron to get stable electronic configuration.
Q donates 1 electron,
Q -----> Q+ + 1 e-
P gains 1 electron,
P + 1 e- -----> P-
Q+ + P- -----> QP
This is an ionic compound.
Answer two questions below:
Answer:
Atoms,
Molecules
a reaction is said to be ________ if the bonds formed during the reaction are stronger than the bonds broken.
Answer:
Exothermic
Explanation:
Bond strength has everything to do with the energy associated with it. What I mean by that, is a stronger bond will require a lot higher of an energy input to break than a weaker bond.
In the same way, energy is released when a bond is made. So, the formation of a stronger bond releases more energy than the formation of a weaker bond.
So, putting the two ideas together, if the bonds formed as stronger than the bonds broken, then more energy is released than taken in, which means energy is released overall over the course of the reaction. This means that the reaction is exothermic.
If there was energy taken in overall, this would be an endothermic reaction.
Let me know if that makes sense, and hope I helped! :)
Exothermic reaction is a reaction in which the bonds formed during the reaction are stronger than the bonds broken.
When chemical reactions occur, there will always be an accompanying energy change.
In exothermic reaction the bonds formed in the products are stronger than the bonds broken in the reactants whereas in endothermic reaction the bonds broken in the reactants are stronger than the bonds formed in the products.
Find out more at: https://brainly.com/question/1689737
What is the. chemical formular name of rusting?
Answer:
Iron(III) oxide
Explanation:
What kind of interaction
(attraction/repulsion) will happen
between the core electrons and the
valence electrons?
¿De que ha dependido el rapido avance en el desarollo de nuevos materiales basados en formas alotropicas del carbon?
Answer:
ano pong topik po yan
Question 8 (2 points)
(02.02 LC)
A mixture contains nuts, drink mix, orange slices, and berries. Which part of this mixture is soluble in water? (2 points)
а
Berries
Ob
Drink mix
Ос
Nuts
Od
Orange slices
Question 9 (2 points)
(02.02 LC)
which of the following dissolve in water? (2 points)
Answer:
B. Drink Mix
Explanation:
Assuming the drink mix is something like Kool-aid, it is soluble in water. The rest are solids that cannot be dissolved in water.
Someone pls help me I will make you brain
Answer:
A catalytic converter
Explanation:
Diesel filters are used to clean fuel not emissions, engine injection puts fuel directly into the engine and a transmission clutch changes the cars transmission.
Answer:
carbon monoxide and nitrogen oxide are needed to be properly maintained
Explain how the fire spreading from tree to tree provides a model for conduction.
The great fire of 1910 burned through parts of north Idaho, western Montana, eastern Washington,and southeastern British Columbia. Many small fires and several large fires that were started by an electric storm coalesced into one”big blowup” of unprecedented size that lasted two days. Hurricane-force winds spread the firestorm; trees became blowtorches, sucking fire from the ground and hurling it in several directions, spreading the fire on contact. Witnesses described fireballs being flung like cannons. Trees exploded like fireworks. The fire killed 87 people, destroyed towns in its path, and burned more than three million acres of forest
the fire spreading is what represents the form of heat transferring from one atom to another within an object and direct contact
which elements are designated as the alkali metals
Answer:
Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr).
Explanation:
Six chemical elements in Group 1, the leftmost column in the periodic table.
Hope this helps!
* What element has an electron configuration of
1s2 2s2 2p6 3s2 3p6 4s2 and which block is it in? Use the periodic table.
Answer:
phosphorus
Explanation:
What would cause a liquid to turn into a solid?
Answer:
Freezing the liquid
Explanation:
Freezing a liquid causes a liquid to become a soild.
Answer:
changing the temperature of the liquid
Explanation:
Ex. Cooking brownie batter(liquid), turns it into an edible brownie(solid). Ex. Putting water into a freezer freezes it, turning it into a solid.
