Answers
Answer:
In chemistry, pH (/piːˈeɪtʃ/) (abbr. power of hydrogen or potential for hydrogen) is a scale used to specify how acidic or basic a water-based solution is. Acidic solutions have a lower pH, while basic solutions have a higher pH.
Explanation:
that should answer ur question
Related Questions
Round to 4 significant figures.
35.5450
Answers
Answer:
35.5450 will be rounded to 35.55
Explanation:
=35.5450
if the last digit is less than 5 then it will be ignored
=35.545
when the dropping digit is 5 then the retaining digit will increse by a factor of 1
=35.55
i hope this will help you
Answer:
35.5450 to 4 significant figures is 35.55
Hope this helps.
During which time interval does the substance exist as both a liquid and a solid
Answers
The time interval in which a substance exists as both liquid and solid is called ; Triple point
A triple point is a time interval in a substance when the pressure and temperature of the substance causes the substance to exist in more than one phase at a time. Substances that exhibit this characteristic are called non-Newtonian fluids.
A good example of a substance that exist in both liquid and solid form within this time interval is Potassium.
Hence we can conclude that the time interval in which a substance exists as both liquid and solid is called triple point.
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Although your question has some missing data a general answer within the scope of your answer is provided above
state symbol for ammonium nitrate solution (Can anyone help with this please?)
Answers
Answer:
NH^4NO^3
Explanation:
Ammonium nitrate, (NH4NO3), a salt of ammonia and nitric acid, used widely in fertilizers and explosives.
What are the Functional properties of boiled rice?
Please if you can write it in your words.
Answers
Urgent. Please help. I need the correct answer
Answers
Answer:
1. B - Both are monbasic.
B - Both are monbasic.2. B - fast but contains more water than acid
B - Both are monbasic.2. B - fast but contains more water than acid3. D - Acids made from oxides of non metals
B - Both are monbasic.2. B - fast but contains more water than acid3. D - Acids made from oxides of non metals4. C. Zn(OH)2
B - Both are monbasic.2. B - fast but contains more water than acid3. D - Acids made from oxides of non metals4. C. Zn(OH)25. C - Neutralization
B - Both are monbasic.2. B - fast but contains more water than acid3. D - Acids made from oxides of non metals4. C. Zn(OH)25. C - Neutralization6. B - H3O+
Explanation:
According to reaserch,
According to reaserch,An neutralization reaction can be defined as a chemical reaction in which an acid and base quantitatively react together to form a salt and water as products. In a neutralization reaction, there is a combination of H+ ions and OH– ions which form wa acid anhydride is an acid anhydride that is an organic compound.
According to reaserch,An neutralization reaction can be defined as a chemical reaction in which an acid and base quantitatively react together to form a salt and water as products. In a neutralization reaction, there is a combination of H+ ions and OH– ions which form wa acid anhydride is an acid anhydride that is an organic compound. An acid anhydride is a compound that has two acyl groups bonded to the same oxygen atom.
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Answers
Answer: c
Explanation:
their is less matter to insulate so the smaller the amount of water the easier the temperature can be changed
Main group elements have valence electrons in which suborbitals? Question 5 options: A) d and f B) s and d C) p and f D) s and p
Answers
Answer:
s and p
Explanation:
The main group elements includes elements in Groups 1-2 and Groups 13-18. Groups 1-2 on the periodic table are the s block elements which means the valence electrons are located in the s suborbital. Groups 13-18 on the periodic table are the p block elements which means the valence electrons are located in the s and p orbitals.
If all carbon dioxide coming out of volcanoes were to remain in the atmosphere, what further effect would this have on Earth’s temperature?
Answers
The effect of carbon dioxide that is coming out of volcanoes can be global warming.
Effect of carbon dioxide:CO2 has been demonstrated to be a critical supporter of air contamination, playing a significant job in the greenhouse effect. That is on the grounds that carbon dioxide traps rays at the ground level, bringing about ground-level ozone. That keeps the earth from cooling during the evening and warms sea waters.
More carbon dioxide in the atmosphere will lead to global warming.
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The effect of carbon dioxide that is coming out of volcanoes can be global warming.
What is the effect of carbon dioxide?[tex]CO_2[/tex] has been demonstrated to be a critical supporter of air contamination, playing a significant job in the greenhouse effect.
That is on the grounds that carbon dioxide traps rays at the ground level, bringing about ground-level ozone.
That keeps the earth from cooling during the evening and warms sea waters.
More carbon dioxide in the atmosphere will lead to global warming.
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#SPJ2
Which statement about the mass of subatomic
particles is false?
a)A proton has a mass of 1 amu.
b)A neutron has slightly more mass
than a proton.
C)An electron has slightly less mass
than a proton.
d)none of the above
Answers
Answer:
C
Explanation:
Both proton and neutron have a mass of 1 atomic unit. ( proton positive but neutron no charge) .
even though they both has a mass of 1 amu , they slightly differ in mass. neutron has slightly greater mass than proton .
but electrons are very smaller than protons and neutrons. electron has 1/1840 mass of proton. so they are very smaller than protons.
answer is C
What is the name of this molecule?
Answers
Answer:
Pentane
Explanation:
Answer:
Hexane
Explanation:
alkane
single bonds and saturated hydrocarbon
the formula is C6H14
three products of destructive distillation of coal
please answer quickly
Answers
Answer:
the three products of destructive distillation of coal are:-
1. coal gas
2. coke
3. ammonia liquor
Answer:
Coke, coal gas, gas carbon, coal tar, ammonia liquor, and coal oil.
Explanation:
Which topic is commonly used to explain activation energy and how chemical reactions happen? reaction rate collision theory velocity distribution spontaneous reaction
Answers
Collision theory
B. in edge
The following reaction is at equilibrium. What would be the effect of adding an excess of N2 and O2?
N2 + O2 ↔ 2NO
Question 16 options:
The equilibrium will shift to the right.
The equilibrium will shift to the left.
Less product will be produced.
Twice the product will be produced.
Answers
Answer:
B
Explanation:
A person applies a force of 200 N over 1.5 m to a jack. The jack exerts a 1000-N force on a car a distance of 0.02 m. What is the efficiency rating of the jack? HINT: Use work formula first to solve for WORKout and again for WORKin...then use efficiency formula.
Answers
Answer:
The efficiency rating of the jack is 0.067.
Explanation:
We have, a person applies a force of 200 N over 1.5 m to a jack. The jack exerts a 1000-N force on a car a distance of 0.02 m.
It is required to find the the efficiency rating of the jack. It is equal to the ratio of output work to the ratio of input work. So,
[tex]\eta=\dfrac{1000\times 0.02}{200\times 1.5}\\\\\eta=0.067[/tex]
Thus, the efficiency rating of the jack is 0.067.
Marek is trying to push a box of sports equipment across the floor. The arrow on the box is vector representing the force that marek exerts. What are the forces acting up one the box?
Answer quick
Answers
Answer:
Gravity force (friction towards Marek ).
Explanation:
According to the situation, Marek try to push the box which contains some mass because of sports equipment
Marek tries to push the box, but gravity tries to the down box on the floor.
So, box and floor create friction towards Marek
.
Answer:
Gravity force
Explanation:
How is Earth unique?
Answers
Answer:
All of the above
Explanation:
Answer:
All of the above
Explanation:
Earth is the only planet in our solar system that has a large amount of liquid water. About 74% of the surface of Earth is covered by liquid or frozen water. Because of this, people sometimes call it the blue planet. Because of its water, Earth is home to millions of species of plants and animals
Thank me later
Hope this helps!!!
how do you separate sand and zinc?
Answers
Answer:
By using magnet.
Explanation:
Put sand and zinc in the bowl.
Take a magnet an bring it close to the bowl.
The zinc from the sand will be attracted towards the magnet.
In this way it will be separated.
Which fourth-period element, X, forms the compound Lewis structure of the molecule X O 3. The X atom is central with three oxygen atoms connected by double bonds. Each oxygen atom has two lone pairs of electrons. As Br Kr Ga Ge Se
Answers
Answer:
Ga
Explanation:
The fourth period element that is able to form a compound whose lewis structure is XO3 with X as the central atom and three oxygen atoms must be an element in group thirteen in the periodic table.
Gallium is known to form a trioxo- compound in which all gallium atoms are connected to oxygen atoms via double bonds. We don't have this type of compound formed by any other atom listed among the options hence the answer given above. The compound is written as GaO3.
The central atom is a gallium atom, which has the symbol Ga.
We can arrive at this answer because:
According to the octet rule, an atom must have 8 electrons in the valence layer to achieve electrical stability.These atoms can achieve this stability through covalent or ionic bonds.According to the above question, we can state that an X atom received 6 electrons, as three oxygen atoms shared 2 atoms each with the X atom.In this case, the atom x must have 2 atoms in the valence layer, to reach 8 atoms with the bonds it made with the oxygens.Among the response options, Ga is the only one that has 2 electrons in the valence layer, being able to form bonds with oxygen.
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To build a boat in which material strength is the greatest concern, the best material to use would be?
A) PVC
B) aluminum
C) copper
D) There is not a clear choice.
Thank you
Answers
3. The volume of a gas is reduced from 4 L to 0.5 L while the temperature is held
constant. How does the gas pressure change?
Answers
Answer:
The new pressure is 8 times the original pressure.
Explanation:
Data obtained from the question include:
Initial volume (V1) = 4L
Final volume (V2) = 0.5L
Initial pressure (P1) = P
Final pressure (P2) =..?
The new pressure can be obtained by using the Boyle's law as shown below:
P1V1 = P2V2
P x 4 = P2 x 0.5
Divide both side by 0.5
P2 = P x 4 / 0.5
P2 = 8P
Therefore, the new pressure is 8 times the original pressure.
What is the molar mass of Ca(OH)2?
a
b
57.008 g/mol
74.092 g/mol
73.080 g/mol
73.088 g/mol
Ос
d
Answers
Answer: the molar mass is 74.092 g/mol
Explanation:
When k-37 undergoes positron emission what is the resulting atom
Answers
Answer:
The resulting atom is argon
Explanation:
Positron emission is a type of radioactive decay known as beta plus decay. This reaction is characterized by an element having an increase in the number of neutrons and a decrease in the number of protons.
This affects the atomic number in which it is decreased by one while the mass number remains unchanged.
In the reaction, 2K (s) + 2H2O (l) produces 2KOH (aq) produces H2 (g), which of the reactants is a solid
Answers
Answer:
k
Explanation:
2K (s) + 2H2O (l) produces 2KOH (aq) produces H2 (g),
2K (s) + 2H2O (l) --> 2KOH (aq) + H2 (g)
(s) = solid
(l) = liquid
(g) = gas
Left hand side are reactants
2K (s) + 2H2O (l)
Right hand side are products
2KOH (aq) + H2 (g)
ASAP PLEASE !!
What are some factors that causes the actual reaction enthalpy to vary from the accepted reaction enthalpy?
Answers
Answer:
Well, Here's some factors:
The concentrations of the reactants and the products.
The temperature of the system.
And, The partial pressures of the gases involved.
Good Luck!~
the reaction below shows a system in equilibrium how would an increase in the concentration of chemicals affect this reaction?
Answers
Answer:
Option B. The equilibrium of the reaction would shift to the right.
Explanation:
According to Le Chatelier's principle, when an external constrain such as change in concentration, temperature or pressure is imposed on a chemical system in equilibrium, the equilibrium position will shift in order to neutralize the effect.
Now, let us answer the question above.
From the question given above, the equation is:
A + B <===> C + D
Increasing the concentration of A will shift the equilibrium position to the right.
This is true because increasing the concentration of A means having more reactants in the system. So the reactants react to produce more product thereby shifting the equilibrium position to the right.
What is the 10th element of the periodic table?
Answers
Answer:
Neon
Explanation:
Answer:
Neon
Explanation:
Open this periodic table and you can see the names and numbers of every element
Hope it helps! :)
Balance this equation. If a coefficient of "1" is required, choose "blank" for that box.
____ CH 4 + ___ O 2 → ____ CO 2 + ____ H 2 O
Answers
Answer:
CH4 + 2O2 → CO2 + 2H2O
Explanation:
CH4 + O2 → CO2 + H2O
Left Side
C = 1
H = 4
O = 2
Right Side
C = 1
H = 2
O = 3
Ok so we'll balance the H first
CH4 + O2 → CO2 + 2H2O
Left Side
C = 1
H = 4
O = 2
Right Side
C = 1
H = 4
O = 4
Now we'll balance the O
CH4 + 2O2 → CO2 + 2H2O
Left Side
C = 1
H = 4
O = 4
Right Side
C = 1
H = 4
O = 4
How long will it take the Sun to go around the galaxy once? a. 200 million years c. 100 thousand years b. 10 years d. 5 billion years
Answers
Molly just started a new job. She needs to fill out a _____ so that her employer knows how much tax to take out. 1099 form tax return form W-4 form W-2 form
Answers
Answer:
The answer is "W-4 form".
Explanation:
The W-4 form is part of the Internal Revenue Service tax form, which is used to submitted by the U.S. government form the customer to information and his or her tax situation. This form informs the customer of the right amount of tax to deduct from his or her salary.
That's why she filled out a W-4 form and know-how often tax he will subtract in the payroll depending on provisions dealing, dependents, potential tax deductions, and credits, etc.
What are two ways drugs can increase the concentration of neurotransmitters in a synapse?
Answers
Answer:
naturally, through diet or exercise or drugs, specifically receptor antagonists
Explanation:
diet/exercise - diet is self explanatory, since a healthy diet would mean that your body would be balanced, and wouldn't struggle with producing NTs
drugs - any type of drug will mimic the behavior of NTs, but receptor antagonists specifically will increase the concentration of neurotransmitters in a synapse. Antagonists would block the receptors, and thus the NTs that were intended for the blocked space, will not have anywhere to go. As a result, the NTs will stay in the synapse, and cause an increase in the concentration of NTs.
ps: you'd have more luck asking this question in biology