Answer:
C. It has more electrons in the product than in the reactant
Explanation:
A type of reaction is called REDOX or oxidation-reduction reaction. In this reaction, substances (element or compounds) involved are either oxidized or reduced. To be oxidized means that a substance has lost electrons and hence, have a positive oxidation state in the product side.
On the other hand, reduction means that the substance has gained or accepted electrons, and hence has a reduced oxidation state in the product side. In other words, a reduced element will have more electrons in the product than in the reactant.
For example, in the following equation:
A + B = A- + B+
A is said to be reduced because it has more electrons (1) in the product than in the reactant (0).
which of the following is a property of acids
A. they are slippery
B. They taste bitter
C. They react with oils
D. they are sour
Answer:
They are sour. =)
Explanation:
what is a metal ore?
Answer:
metal ores are naturally occurring rocks that contain metals or metal compounds in sufficient amounts to make it worthwhile extracting them
A person throws a 0.44-kg ball straight up into the air. It reaches a height of 9
m. What is the force on the ball as it begins to fall? (The acceleration due to
gravity is 9.81 m/s2)
A. 2.06 N
B. 2.48 N
C. 4.32 N
0 D. 1.18N
C - 4.32
Explanation:
.44 x 9.81
Can someone please help me!!
Answer:
Explanation:
Hope this helps u!!
A set of charged plates is
separated by 8.08*10^-5 m. When
2.24*10^-9 C of charge is placed
on the plates, it creates a potential
difference of 855 V. What is the
area of the plates?
(The answer is _*10^-5 m^2. Just fill
in the number, not the power.)
Answer:
2.39×10¯⁵ m²
Explanation:
From the question given above, the following data were obtained:
Distance (d) = 8.08×10¯⁵ m
Charge (q) = 2.24×10¯⁹ C
Potential difference = 855 V
Area(A) =?
NOTE: Permittivity (ε₀) = 8.854×10¯¹² F/m
The area can be obtained as follow:
q = ε₀AV/d
2.24×10¯⁹ = 8.854×10¯¹² × A × 855 / 8.08×10¯⁵
2.24×10¯⁹ = 7.57×10¯⁹ × A / 8.08×10¯⁵
Cross multiply
7.75×10¯⁹ × A = 2.24×10¯⁹ × 8.08×10¯⁵
7.75×10¯⁹ × A = 1.81×10¯¹³
Divide both side by 7.75×10¯⁹
A = 1.81×10¯¹³ / 7.75×10¯⁹
A = 2.39×10¯⁵ m²
Thus, the area of the plate is 2.34×10¯⁵ m²
Answer:
2.39
Explanation:
Use the activity series below to predict whether the following reactions will take place.
Answer:
first one is yes, second one is no
Explanation:
edge
A wheelbarrow can be used to help lift a load, such as a pile of dirt, and then push the load across a distance.
A man pushes a wheelbarrow.
Which simple machines make up a wheelbarrow?
a pulley and an inclined plane
a wheel and axle and a lever
a pulley and a wheel and axle
a lever and a wedge
Answer: it consists of two simple machines: a lever and a wheel and axle. Effort is applied to the lever by picking up the handles of the wheelbarrow.
Explanation:
Answer:
B
Explanation:
B)
The pH of a solution with a [OH-] of 1x10^-6 is
Answer:
pH = 6
Explanation:
Given that,
The concentration of [OH]⁻ ion is [tex]10^{-6}[/tex].
We need to find the pH of the solution.
We know that,
[tex]pH=-\log[OH]^-[/tex]
Put all the values,
[tex]pH=-\log(10^{-6})\\\\pH=6[/tex]
Hence, the pH of the solution is 6.
PLEASE HELP !!!
Which of the following measurements is used to measure the enthalpy of combustion?
A. Measuring the change in temperature when two liquids are mixed.
B. None of these
C. Measuring the change in temperature of a beaker of water.
D. It cannot be measured, only calculated using the equation: q = mc∆T.
Explanation:
measuring the change of temperature when 2 liquids are mixed
The word habitable is defined as:
How many significant digits are in the value 0.0050340?
Answer:
6
Explanation:
6, because the number after decimals are considered significant but the 0 after the last number is not significant.
The part of an atom that has an overall positive charge is called
A)
an electron
B)
the nucleus
C)
the first shell
D)
the valence shell
Answer: I think it’s B
A gas has a volume of 1000.0 mL at a temperature of 20.OK and a pressure
of 1.0 atm. What will be the new volume when the temperature is changed
to 40.0K and the pressure is changed to
0.5 atm?
Answer:
4000mL
Explanation:
Using the combined gas law equation as follows:
P1V1/T1 = P2V2/T2
Where;
P1 = initial pressure (atm)
P2 = final pressure (atm)
V1 = initial volume (mL)
V2 = final volume (mL)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the information given in this question:
V1 = 1000mL
T1 = 20K
P1 = 1.0atm
V2 = ?
P2 = 0.5atm
T2 = 40K
Using P1V1/T1 = P2V2/T2
1 × 1000/20 = 0.5 × V2/40
1000/20 = 0.5V2/40
50 = 0.5V2/40
50 × 40 = 0.5V2
2000 = 0.5V2
V2 = 2000/0.5
V2 = 4000mL
It is the gametes formation of a sex cells or reproductive cells.
Answer:
Meiosis
Explanation:
.bnsksksksjabsn...
Answer:
sana makatulong po sainyo
examples of metal non-metal and semi metal
Answer:
Semi : Boron [B] Non-Metal : Carbon [C] Metal : Manganese [Mn]
Explanation:
Periodic table I'm guessing!
plzzz answer fastttttttt
I will give brainliest
Answer:
starch or carbs - amylase
fat - lipase
protien - pepsim
Question
Calculate the total energy, in kilojoules, that is needed to turn a 35 g block
of ice at -10 degrees C into water vapor at 100 degrees C.
Answer:
34545 J
Explanation:
Applying,
E = mc'+cm(t₂-t₁)+Cm(t₂-t₀).............. Equation 1
Where E = Total energy, m = mass of the ice, c' = latent heat of ice, c = specific heat capacity of ice, t₂ = final temperature, t₁ = initial temperature, C = specific heat capacity of water, t₀ = temperature of ice at 0°C
From the question,
Given: m = 35 g = 0.035 kg, t₁ = -10°C, t₂ = 100°C, t₀ = 0°C
Constant: C = 4200 J/kg.K, c = 2100 J/kg.K, c' = 336000 J/kg
Susbtitute these values into equation 1
E = [336000(0.035)]+[0.035×2100(100+10)]+[4200×0.035(100-0)]
E = 11760+8085+14700
E = 34545 J
Part C
For each source of energy, describe its strengths and weaknesses with respect to the ideal source you described in part A. Do Internet research, as needed, to describe each energy source.
Question 1
Describe at least two advantages and two disadvantages of using natural gas as a source of energy.
Answer:
See explanation
Explanation:
Natural gas is mined along with crude oil in many oil wells. It has the advantage of being a cheap fossil fuels which is easily obtainable.
Generally, natural gas is the cleanest of all the fossil fuels. This means that it is the fossil fuel that least contributes to environmental pollution.
On the other hand; natural gas produces some amount of sulphur as it is burnt and mercury as particulate matter. These substances are quite dangerous to health.
Secondly, the combustion of natural gas leads to the production of the oxides of nitrogen which play a key role in the occurrence of photochemical smog.
three functions of the stem
The three functions of the stem:
To support the leaves,To conduct water, and To conduct minerals to the leaves.An electric kettle draws a current of 6.50 A while it is plugged into a 120-V
electrical outlet. What power does the kettle use?
Answer:
780 watts
Explanation:
formula to find power when given amps and voltage
P = A x V
=6.50a x 120V
= 780 W (watts)
Can someone please help me!!
Explanation:
Corrections
- It should be 45 bromine atoms
- Bromine isn't found abundantly as atoms, rather as diatomic molecules
[tex]Br_2[/tex]
Before should show 2 phosphorus atom and 3 bromine molecules to form 2 phosphorus tribromide
The bond is covalent because both bromine and phosphorus is a non-metal
AYUDA XFAVOR, NO LE ENTIENDO MUY BIEN:(
Answer:
A. total aumenta
Explanation:
8g + 4.04g = 12.04g
Is lotion pure or impure?
Answer:
Pure
Explanation:
Lotion is pure. Hope this helps!
Answer:
I think pure
hope this helps
have a good day :)
Explanation:
The compounds that form from the bonding of the hydroxyl group (-OH) to a hydrocarbon are called the aldehydes.
True
False
Answer:
False.
I just got it right, lol.
Based on your understanding of how bond types influence a material’s properties, identify each of the following compounds as being made of ionic, covalent, or metallic bonds.
ANSWER
Steel: Metalic
Propane: Covalent
Calcium chloride: ionic
Water: Covalent
Edge 2021
Answer: The given compounds are identified as being made of ionic, covalent, or metallic bonds:
Steel - Metallic bondsPropane - Covalent bondsCalcium chloride - Ionic bondsWater - Covalent bondsExplanation:
A bond formed by transfer of electrons from one atom to another is called an ionic bond. An ionic bond is formed between a metal atom and a non-metal atom.
A bond formed by transfer of electrons from one atom to another is called a covalent bond. A covalent bond is formed between two or more non-metal atoms only.
Steel is actually an alloy of carbon and iron where there is less than 2% carbon, 1% manganese and small amounts of silicon, phosphorus, oxygen and sulphur are present.
When atoms of metals are held together then bond formed between these atoms is called metallic bond.
Hence, steel is made of metallic bond.
Chemical formula of propane is [tex]CH_{3}CH_{2}CH_{3}[/tex] as there are only non-metal atoms are present. So, sharing of electrons takes place in such atoms due to which covalent bonding will be there.
Hence, propane is made up of covalent bonds.
Calcium chloride contains a metal and a non-metal atom. This means that electrons are being transferred from calcium atom to the chlorine atom. Hence, bond present in calcium chloride is ionic bond.
Water has chemical formula [tex]H_{2}O[/tex]. Since, non-metal atoms are present there so sharing of electrons takes place between hydrogen and oxygen atoms. Hence, covalent bond is present in water.
Thus, we can conclude that given compounds are identified as being made of ionic, covalent, or metallic bonds:
Steel - Metallic bondsPropane - Covalent bondsCalcium chloride - Ionic bondsWater - Covalent bondsSteel: ✔ metallic
Propane: ✔ covalent
Calcium chloride: ✔ ionic
Water: ✔ covalent
Select the statement that is most correct regarding chemical bonds. A. multiple bonds between two atoms are not possible with covalent bonding B. hydrogen bonds are very weak and can only occur when polar covalent bonds are present C. Ionic bonds involve the sharing of electrons D. Covalent bonds involve the transfer of one or more electrons from one atom to another
Answer:
hydrogen bonds are very weak and can only occur when polar covalent bonds are present
Explanation:
Hydrogen bonds are weak intermolecular interactions that occur when hydrogen is covalently bonded to a highly electronegative atom.
Owing to the difference in electro negativity between hydrogen and the highly electronegative atom, the bond is a polar covalent bond.
This hydrogen bond is a weak bond but accounts for properties such as high melting and boiling points of small molecules such as water and ammonia.
what are some different natural events and man-made activities that can affect ocean acidification?
Ocean acidification is the process of decreased pH levels of the oceans. The burning of fossil fuels and industrialization are man-made activities that lead to this process.
What is Ocean acidification?Ocean acidification is an increased concentration of acidic components of the oceans due to an increase in the carbon dioxide level of the oceans.
Human activities like cutting down a large number of trees, discharging from industrial outlets, and burning fossils like petrol, coal, diesel, etc. are leading to increased acidification of the oceans.
Therefore, natural causes like increased salinity, flood, and earthquake are the reasons for oceanic acidification.
Learn more about ocean acidification here:
https://brainly.com/question/7604502
Need help asap please!
Which contributes to the polarity of a water molecule?
A. a linear shape along with strong covalent bonds
B. deflection of hydrogen atoms by lone pairs of electrons
C. no difference in the electronegativity of oxygen and hydrogen
D. hydrogen bond formation between water molecules
Answer:
B
Explanation:
because polarity of the water molecules is due to the B. deflection of the hydrogen atoms by the lone pair of electrons.
Answer:
B
Explanation:
Once upon a time, a mother duckling sat on her eggs with great impatience. How long would it be before they hatched? Finally, one summer day, the mother duckling watched as the eggs cracked, and her cute, yellow ducklings waddled into the world. She was filled with joy until she noticed that one egg, which was larger than all of the others, remained. After many hours, the egg cracked. A large, gray duckling emerged. The mother duck was horrified at the duckling's appearance. The mother duck's only comfort was that the ugly duckling could swim and dive under the water.
As the ugly duckling grew, many animals in the pond criticized him. His feathers were too dark, his neck was too long, and his body was too big. His fellow ducklings refused to recognize that underneath the feathers, the ugly duckling was kind, good, and gentle. The ugly duckling shed many tears because none of the other animals would play with him.
Read this excerpt from the fairy tale The Princess and the Pea.
One evening, there was a terrible storm. The wind howled, thunder shook the stone walls, and lightning filled the dark night sky. Through the pelting of the rain, there came a knock at the door. When the king opened the door, he saw a bedraggled girl, soaked to the skin and covered in mud. He ushered her into the castle so that she could warm herself by the fire.
"Why is a young servant girl like you wandering about on such a ferocious night?" queried the king.
The disheveled maiden looked at the king in disbelief. "I am a princess, come to see the prince," she explained, all the while shivering.
The king summoned his wife, the queen, for advice. The queen looked at the hideous creature in disbelief, thinking that no princess would ever allow herself to be found in such a state.
How do the authors illustrate the theme that people should not be judged based on their appearances?
Both authors show that the main characters are not afraid of getting wet and dirty in order to live active lives.
Both authors show the main characters being labeled in a negative manner based on their appearances.
Both authors showed the main characters exercising patience with other people.
Both authors showed the main characters wanting to make friends with others.
Answer:
Im not 100% sure this is correct but i think the answer would be
Both authors show the main characters being labeled in a negative manner based on their appearances.
Explanation:
because
both the ugly ducking and the princess are not in the best conditions so i think that would be why that is the answer choice
Answer: i think it's Both authors show the main characters being labeled in a negative manner based on their appearances.
Explanation: they both are being labeled in a negative manner so that's your answer your welcome
1.2 Give two ways that somebody could get Salmonella food poisoning.
Answer: Raw meat, poultry and seafood. Feces may get onto raw meat and poultry during the butchering process. ...
Raw eggs. ...
Fruits and vegetables.
Explanation:
