please help! What is the minimum temperature needed to dissolve at least 10 g of KClO3?
28 ⁰C
35 ⁰C
20 ⁰C
15 ⁰C
Answers
At least 10 g of KClO3 must dissolve at a temperature of 35 0C. As a result, choice (C) is accurate.
What is meant by Boiling point?The temperature at which a liquid's vapor pressure equals the pressure around it and the liquid turns into a vapor is known as the boiling point of a substance
A liquid's boiling point varies depending on the atmospheric pressure in the area. Lower pressure, or partial vacuum, results in a liquid's boiling point being lower than it would be under atmospheric pressure.
As a result, water boils at 99.97 °C (211.95 °F) at sea level but at 93.4 °C (200.1 °F) at 1,905 m (6,250 ft)[3] altitude under standard pressure. Different liquids will boil at various temperatures at a given pressure at the freezing point
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Related Questions
science helpppppppppppppppppppppppppppppppp
Answers
Answer: it should be 80g
Explanation:
Richard wrote a list of the advantages of using any one of the six simple machines. His list is below. Which statement about simple machines is not correct?
A.
Some simple machines produce an output force greater than the input force.
B.
Some simple machines produce an output force in a different direction than the input force.
C.
Some simple machines have a work output greater than the work input.
D.
Some simple machines increase the distance through which a force is applied.
Plss say just A,b,c, or d :/
Answers
Answer:
c
Explanation:
just took the test 100 on it the test is simple machines
Use the scenario to answer the following question.
A group of students working in a chemistry lab is planning a procedure to neutralize 25.0mL of 2.0 M hydrochloric acid (strong acid) with 1.0 M potassium hydroxide (strong base). In their procedure they plan on adding an equal volume of the base to the acid.
What would be the expected outcome of carrying out this step as planned?
A.
The resulting pH will be equal to 7 because a strong base will neutralize a strong acid.
B.
The resulting pH will be less than 7 because potassium hydroxide is less concentrated than the hydrochloric acid.
C.
The resulting pH will be greater than 7 because potassium hydroxide is less concentrated than the hydrochloric acid.
D.
The resulting pH will not be able to be determined because the concentrations of the acid and base are not the same.
Answers
You have 2.0 M HCl and 1.0 M KOH. If you have 25 mL of both, you have double the moles of HCl, since it’s more concentrated, so your final solution will still be acidic.
The expected outcome of carrying out this step as planned is :
B. The resulting pH will be less than 7 because potassium hydroxide is less concentrated than the hydrochloric acid.
Acid and basesThe expected outcome of carrying out this step as planned is the resulting pH will be less than 7 because potassium hydroxide is less concentrated than the hydrochloric acid.
pH may be a degree of how acidic/basic water is.
The run goes from - 14, with 7 being unbiased. pHs of less than 7 demonstrate causticity, while a pH of more noteworthy than 7 demonstrates a base.
pH is truly a degree of the relative amount of free hydrogen and hydroxyl particles within the water
Thus, the correct answer is B.
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Predict whether a reaction will occur when HClO and Sr(OH)2 solutions are mixed, if yes determine spectator ions in the ionic equation.
Answers
Answer:
[tex]ClO^-\\\\Sr^{2+}[/tex]
Explanation:
Hello there!
In this case, according to the reaction between hypochlorous acid and strontium hydroxide which yields stontium hypochlorite and water as a neutralization reaction:
[tex]2HClO(aq)+Sr(OH)_2(aq)\rightarrow Sr(ClO)_2(aq)+2H_2O(l)[/tex]
Thus, since HClO is a weak acid, it is not fully ionized so the complete ionic equation turns out to be:
[tex]2H^++2ClO^-+Sr^{2+}+2(OH)^-\rightarrow Sr^{2+}+2(ClO)^-+2H_2O(l)[/tex]
Whereas the spectator ions, which remain the same at both sides of the equation, are:
[tex]ClO^-\\\\Sr^{2+}[/tex]
Best regards!
pleeeassee
Carbon has unique bonding characteristics that allow it to
A
form ionic bonds with any atom to form many different molecules.
B
resist bonding with other atoms and remain a pure element.
C
form chains or rings by bonding to itself and other atoms.
D
form ionic salts that make up half of the known salts on Earth.
Answers
What is the role of Cl2 in the following
reaction?
CL + NaOH Nacl+ NaCO3+H2O
Answers
Answer:
Cl2 acts as an oxidizing agent
Explanation:
The balanced equation is
Cl2+NaOH⟶NaCl+NaClO3+H2O
Cl2 acts as a reactant in this chemical reaction
Cl2 receives one electron and thus reduces itself from Cl2 to 2 Cl−. This indicates that 2Cl- will oxidize some other element and hence Cl2 act as an oxidizing agent.
A gas has a pressure of 500.0 Torr at 35.0 °C. What is the temperature at
standard pressure?
Answers
Answer:
466.65 K
Explanation:
Using the formula of Pressure law,
P/T = P'/T'.................... Equation 1
Where P = Intial pressure of gas, T = Initial temperature of gas, P' = Final pressure of gas, T' = Final temperature of gas.
make T' The subeject of equation 1
T' = (P'T)/P................... Equation 2
From the question,
Given: P = 500 Torr = (500×133.322) N/m² = 66661 N/m², T = 35°C = (35+273) = 308 K, P' = 101000 N/m²( Standard pressure)
Substitute these values into equation 2
T' = (101000×308)/66661
T' = 466.65 K
What volume will 1000 grams of nitrogen dioxide occupy at 380 mmHg at 0°C
Answers
0.69(78)Explanation:
What pressure, in atm, would be equal to 798 mmHg?
Answers
Answer:
1.05 atm
It should be 1 atm = 760 mm; therefore, 798 mm x (1 atm/760) = about 1.05 atm.
The value of pressure in atm that would be equal to 798 mmHg is 1.05 atmospheric.
What is pressure?Pressure is a physical quantity or a kind of force which is perpendicularly applied on the surface area of any object so that force is equally distributed on that surface.
Pressure will be maesured by various unit and have relation with one another.
As we know that, 1 atm = 760 mmHg
Or 1 mmHg = 1/760atm
Given quantity of pressure is 798 mmHg and we calculate this quantity by multiply this value by 1/760 and we get,
798 mmHg = 798mmHg × 1/760atm/mmHg = 1.05 atm
Hence required value of pressure is 1.05 atm.
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A functional group is a specific arrangement of atoms in an organic compound that is acmpavle if characteristic reactions
Is this True or false
Does not having the word (chemical )before reactions make it false
Please help i would appreciate it
Answers
Explanation:
(a) a functional group is a special group of atoms or bonds in a compound that is responsible for the chemical reactions, behavior, and characteristics of that compound. (b) Functional group is present in both the compound is alcohol (-OH).
Functional groups are specific groupings of atoms within molecules that have their own characteristic properties, regardless of the other atoms present in a molecule. Common examples are alcohols, amines, carboxylic acids, ketones, and ethers.
Key Points
Functional groups are often used to “functionalize” a compound, affording it different physical and chemical properties than it would have in its original form.
Functional groups will undergo the same type of reactions regardless of the compound of which they are a part; however, the presence of certain functional groups within close proximity can limit reactivity.
Functional groups can be used to distinguish similar compounds from each other.
Key Terms
functional group: A specific grouping of elements that is characteristic of a class of compounds, and determines some properties and reactions of that class.
functionalization: Addition of specific functional groups to afford the compound new, desirable properties.
what 3 things does cell division allow cells to do?
(there r no answer choices)
Answers
Answer:
Cell division is central to organism growth, reproduction and tissue repair.
Explanation:
Hope this helps!
Answer:
multiply, survive grow
What is something YOU can do Today to help preserve our Mother Earth??
Answers
Answer:
I would recycle, reuse, and reduce the litter on this already hurt Earth.
Explanation:
Answer:
I can go out and help pick up garbage and i can recycle and not litter and i can reuse all the plastic water bottles i drink.
Explanation:
Im glad you care about mother earth to
What is the molar mass of CH 4 ? (C = 12.01g / m * o * l, H = 1.008g / m * o * l)
Answers
Use the masses of the elements below to calculate the mass of 8.70 moles of H3M (the number at the bottom of
each square is the atomic mass of that element)
1
2
3
4
5
6
A
H
C
B
M
Sm
aragon
hillsdale
capuchino
mills
burlingame
san mateo
1.10
3.50
7.09
11.22
15.23
18.98
Given:
Wanted
Relationship: 1 mole H3M =
grams
Final answer
grams
Answers
yes use the masses of an element below calculate the mass of it 8.70 mole of each 3M
How many grams of KBr is required to prepare 100 mL of
2.0 M KBr solution?
Answers
Answer:
23.8g
Explanation :
Convert 2.0M into mol using mol= concentration x volume
2.0M x 0.1L (convert 100mL to L since the units for M is mol/L)
= 0.2 mol
We can now find grams by using the molar mass of KBr
=119.023 g/mol (Found online) webqc.org
but can be be calculated by using the molecular weight of K and Br found on the periodic table
We can now calculate the grams by using grams=mol x molar mass
119.023g/mol x 0.2mol
= 23.8046 g
=23.8g (rounded to 1decimal place)
How many electrons can be described by the quantum numbers n = 2,1 – 3?
Answers
Answer:
a maximum number of 10 electrons can share
Explanation:
How many electrons in an atom can have quantum numbers of N 3 and ML 2?
Therefore, a maximum number of 10 electrons can share these two quantum numbers in an atom.
The pH and pOH scales represent concentrations of [H3O+] and [OH−], respectively. What are the hydronium ion concentration and the hydroxide ion concentration of pure water at 25 °C?
Answers
Answer:n
Explanation:
If a chemist dilutes 2L of 0.700M solution to 3 L what will be the new concentration (M)?
Answers
Answer:
0.233M
Explanation:
M1 = 0.700M
V1 = 2L
V2 = 3L
M2 = ?
M1V1 = M2V2
(0.700)(2) = M2(3)
M2 = 0.233M
Please help me with this net ionic chem equation
Answers
Answer:
C) H+(aq) + OH-(aq) ---》 H2O(aq)
How long does cream of tartar activate
Answers
I didn’t study for this lol if your answer correct I’ll mark ur answer brainliest
Answers
Answer:
3
Explanation:
3 is the answer is did this a little while ago
Thank you!!! ;0;
3.00 moles of ammonia are originally put into a 1.00-liter container and allowed to decompose (no other chemicals present). At equilibrium, 0.600 moles of ammonia remained in the reaction vessel. What would be the equilibrium constant (K) for this reaction?
2 NH3(g) N2(g) + 3 H2(g(
Answers
Answer:
Kc ≅ 100 (1 sig. fig.)
Explanation:
2NH₃(g) ⇄ N₂(g) + 3H₂(g)
C(i) 3.00 mol/L 0 0
ΔC -2x +x +3x
C(eq) 0.600 mol/L x 3x
3.00 - 2x = 0.600 => x = 3.00 - 0.600/2 = 1.2 mole/L
At equilibrium Kc = [N₂][H₂]³/[NH₃]² = (x)(3x)³/(3·1.2)² = (1.2)(3.6)³/(0.600)² = 155.52 (calculator)
Rounds to 1 sig. fig. based on given 3.00 moles NH₃(g)' Kc ≅ 100.
Fe + O2 —> Fe2O3
can someone pls help me balance this??
Answers
Answer:
4Fe + 3O2 → 2Fe2O3
What other small steps can we take to save water ?
Answers
Answer:
Check your toilet for leaks. ...
Stop using your toilet as an ashtray or wastebasket. ...
Put a plastic bottle in your toilet tank. ...
Take shorter showers. ...
Install water-saving shower heads or flow restrictors. ...
Take baths. ...
Turn off the water while brushing your teeth. ...
Turn off the water while shaving.
Explanation:
Answer:
keeping the water clean
Explanation:
avoid dumping rubish in the water
What’s an easy way to learn to convert metric numbers? Help plz
Answers
Explanation:
HOPE IT HELPS
THANKS
Determine the AMOUNT OF NO2, LIMITING REACTANT, AND THE AMOUNT AND NAME OF EXCESS REACTANT.
10.00 g of O2 reacts with 20.00 g NO
The molar masses of O2, NO, and NO2 are 32.00 g/mol, 30.01 g/mol, and 46.01 g/mol, respectively
Answers
Answer:
balanced equation mole ratio 5 2 mol NO/1 mol O2
10.00 g O2 3 1 mol O2/32.00 g O2 5 0.3125 mol O2
20.00 g NO 3 1 mol NO/30.01 g NO 5 0.6664 mol NO
actual mole ratio 5 0.6664 mol NO/0.3125 mol O2 5 2.132 mol NO/1.000 mol O2
Because the actual mole ratio of NO:O2 is larger than the balanced equation mole
ratio of NO:O2, there is an excess of NO; O2 is the limiting reactant.
Mass of NO used 5 0.3125 mol O2 3 2 mol NO/1 mol O2 5 0.6250 mol NO
0.6250 mol NO 3 30.01 g NO/1 mol NO 5 18.76 g NO
Mass of NO2 produced 5 0.6250 mol NO2 3 46.01 g NO2/1 mol NO2 5 28.76 g NO2
Excess NO 5 20.00 g NO 2 18.76 g NO 5 1.24 g N
Explanation:
Rayden is taking a Life science course in absence of Ms. Leesa and tells the students that Organelle X is where genetic information is stored.
Answers
Answer: good for him
Explanation: jk
its the dna which is in the NUCLEAS which is probably the answer
GOOD LUCK
how to find resistance of a color code with 4 rings?
Answers
Answer:
its yellow
Explanation:
it's a constant law .... much explanation
from 0 to 9
we have
black .o
brown 1
red 2
orange 3
yellow 4
green 5
blue 6
violet 7
grey 8
white 9
QUE VENTAJAS TIENE PARA LA PLANTA Y EL CULTIVO LA PERMANENCIA DEL POTASIO COMO CATION MONOVALENTE (K+)?
Answers
Explanation:
Son muchos los beneficios del catión monovalente (K+) en las plantas y cultivos, mencionaremos algunos:
-Interviene en el proceso de apertura y cierre de los estomas; el catión (k+) ayuda a que los estomas puedan realizar correctamente el proceso de la fotosíntesis es decir la absorción del dióxido de carbono para producir oxígeno y agua; este proceso ayuda a que la planta pueda fabricar su propio alimento es decir transformar materiales inorgánicos en orgánicos como azúcares y carbohidratos que son aprovechables por la planta para realizar diversas funciones catalíticas como la respiración celular,la fosforilación y la síntesis de proteínas; este proceso también contribuye a que la planta pueda almacenar y retener suficiente agua lo cual ayuda a evitar el estrés hídrico en la planta.
Por lo tanto si la planta tiene una buena concentración de potasio como catión monovalente(k+); es posible que tenga un buen crecimiento y desarrollo radicular ,así mismo la calidad de los cultivos será muy buena,seran cultivos muy nutritivos y saludables. Algunos cultivos que necesitan una alta cantidad de potasio son los cítricos y el banano.
What bonds might form in a carbon atom with sp2 hybrid orbitals?
O A. four single bonds
OB. a double bond and two single bonds
O c. a triple bond and a double bond
OD. a triple bond and a single bond