Answer: static electricity
Explanation: rubbing the comb creates. Static charge to comb
Potato farmers in Ireland during the mid 1800s all grew the same type of potato. The potato plants were all produced as clones of one another. When a fungus infected the crop, all of the potatoes were destroyed. This occurred because these potato plants
Answer:
The crop failures were caused by late blight, a disease that destroys both the leaves and the edible roots, or tubers, of the potato plant.
science helpppppppppppppppppppppppppppppppp
Answer: it should be 80g
Explanation:
What pressure, in atm, would be equal to 798 mmHg?
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.
To know more about pressure units, visit the below link:
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How long does cream of tartar activate
Please answer and thank you
Answer:
It's A.
Atoms that have the same number of valence electrons in their outer shell have similar properties and belong to the same family of elements.
I didn’t study for this lol if your answer correct I’ll mark ur answer brainliest
Answer:
3
Explanation:
3 is the answer is did this a little while ago
Can someone please help a girl out and answer this plsss ...need this as soon as posible
Answer:
the anwser would be B obtain energy
Explanation:
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.
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.
Learn more about "Acids":
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What is something YOU can do Today to help preserve our Mother Earth??
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
QUE VENTAJAS TIENE PARA LA PLANTA Y EL CULTIVO LA PERMANENCIA DEL POTASIO COMO CATION MONOVALENTE (K+)?
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.
2. Can you say that the matter which underwent a chemical change is still the
same substance as before? Why?
Answer:
No
Explanation:
A chemical change is a change that involves a change in the chemical composition of matter. A new substance is formed. In a chemical change, new chemical and physical properties of the substance are formed. In a chemical change, the chemical and physical properties of the substance formed will be different from the original substance.
The matter which underwent a chemical change is not still the same substance as before.
What is Chemical change?This is the type of change which occurs when two substances known as reactants react to form a new product.
The formation of a new product through bonding and other parameters thereby makes the substance to be different as it was before.
Read more about Chemical change here https://brainly.com/question/11987405
If a chemist dilutes 2L of 0.700M solution to 3 L what will be the new concentration (M)?
Answer:
0.233M
Explanation:
M1 = 0.700M
V1 = 2L
V2 = 3L
M2 = ?
M1V1 = M2V2
(0.700)(2) = M2(3)
M2 = 0.233M
How many liters of water do we need to add to 5.00 moles to get a 0.648 M solution?
Answer: This is a typical acid/base equilibrium problem, that involves the use of logarithms.
Explanation:We assume that both nitric acid and hydrochloric acid dissociate to give stoichiometric
H
3
O
+
.
Moles of nitric acid:
26.0
×
10
−
3
⋅
L
×
8.00
⋅
m
o
l
⋅
L
−
1
=
0.208
⋅
m
o
l
H
N
O
3
(
a
q
)
.
And, moles of hydrochloric acid:
88.0
×
10
−
3
⋅
L
×
5.00
⋅
m
o
l
⋅
L
−
1
=
0.440
⋅
m
o
l
H
C
l
(
a
q
)
.
This molar quantity is diluted to
1.00
L
. Concentration in moles/Litre =
(
0.208
+
0.440
)
⋅
m
o
l
1
L
=
0.648
⋅
m
o
l
⋅
L
−
1
.
Now we know that water undergoes autoprotolysis:
H
2
O
(
l
)
⇌
H
+
+
O
H
−
. This is another equilibrium reaction, and the ion product
[
H
+
]
[
O
H
−
]
=
K
w
. This constant,
K
w
=
10
−
14
at
298
K
.
So
[
H
+
]
=
0.648
⋅
m
o
l
⋅
L
−
1
;
[
O
H
−
]
=
K
w
[
H
+
]
=
10
−
14
0.648
=
?
?
p
H
=
−
log
10
[
H
+
]
=
−
log
10
(
0.648
)
=
?
?
Alternatively, we know further that
p
H
+
p
O
H
=
14
. Once you have
p
H
,
p
O
H
is easy to find. Take the antilogarithm of this to get
[
O
H
−
]
.
Answer link
Please help me with this chem question. Only answer if you know it.
Answer:
solid=(s)
Explanation:
A solubility table may be something your class may want you to memorize. Where an aqueous (aq) solution is formed by a soluble compound dissolving in water, our solvent. So if we refer to this solubility table, it says phosphate (PO4) is usually insoluble, so in the reaction it won't break down in water and will stay as a solid (s). The only exceptions are group 1 alkali metals or ammonium (NH4+).
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?
Answer:n
Explanation:
how many moles of aluminum are produced from 4.9 moles of lithium?
Answer:
2.95078 × 10^23
hope this helps you ☺️☺️
The concentration of C6H12O6 may be represented as (C6H12O6) {C6H12O6} [C6H12O6]
Answer:
[tex][C_6H_{12}O_6][/tex]
Explanation:
Hello there!
In this case, since the concept of solution concentration is majorly used in terms of moles per liters of solution or molarity (M), it is also possible to represent this chemical unit by using squared brackets, [ ].
In such a way, when focused on the concentration of glucose, C6H12O6, we can use:
[tex][C_6H_{12}O_6][/tex]
Best regards!
Where can you find the atomic mass?
Answer:
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.
Explanation:
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.
What’s an easy way to learn to convert metric numbers? Help plz
Explanation:
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THANKS
why is detergent called soapless soap
Answer:
Detergents are referred to as soapless soaps because they have a washing action similar to soap but do not contain the typical chemical contents of soaps, such as sodium or potassium salts of long chain fatty acids.
Explanation:
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
yes use the masses of an element below calculate the mass of it 8.70 mole of each 3M
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
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 volume will 1000 grams of nitrogen dioxide occupy at 380 mmHg at 0°C
0.69(78)Explanation:
Please help me with this net ionic chem equation
Answer:
C) H+(aq) + OH-(aq) ---》 H2O(aq)
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(
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.
What other small steps can we take to save water ?
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
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.
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
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:
What is the molar mass of CH 4 ? (C = 12.01g / m * o * l, H = 1.008g / m * o * l)
Scientist have genetically altered a common virus so that it can Destroy the most lethal type of brain tumor without harming the healthy tissue nearby this technology is used for all expect
Answer:
The correct answer is - discovering or diagnosing the disease.
Explanation:
According to the question, this technology includes genetically modifying a common virus in order to destroy or kill the deadly brain tumor without affecting normal cells around the tumor, this technique is genetic engineering.
This technique can help in treating or curing the disease by killing the tumor cells and make them non-lethal. It can also prevent the tumor cells to grow and make them controlled. There is nothing mention related to diagnosing the disease in the question and it is not possible to find this tumor with help of such a technique.