Answer:
Potassium hydroxide + Hydrochloric acid → Potassium chloride + Water.
potassium hydroxide + hydrochloric acid = neutralisation
which sphere includes all the plants and animals on earth?? A. Lithosphere B.Type of soil C.Biosphere D.Asthenosphere
Answer:
Biosphere
Explanation:
It is B i think
What is a physical property of water? *
not flammable
reacts with sodium
liquid at room temperature
What role does blood play before cellular respiration can occur?
Blood releases energy from very small molecules.
Blood carries energy from the cytoplasm to a mitochondrion.
Blood delivers oxygen and glucose to cells.
Blood delivers carbon dioxide and water to cells.
Answer:
B) Blood carries energy from cytoplasm to a mitochondrion
Hope this could help!
Explanation:
Answer:
C.
Explanation:
Blood provides your body with oxygen and glucose, which provides cellular respiration with the needed nutrients.
Please help me
How many hydrogen(H) atoms are in 3(NH₄)₂Cr₂O₇
And How many Nitrogen(N) atoms are in 3(NH₄)₂Cr₂O₇
Answer:
24 H
6 N
Explanation:
3 × (4 × 2) = 24 H
3 × 2 = 6 N
**PLEASE HELP** If you were presented with a preserved brain specimen, but weren’t told whether it was from a human or a sheep, how would you determine which animal it was from? Describe at least three differences you would use to help determine your answer.
Answer:
size-humans brains are usually larger than animals, shape-some animal brains are shaped very odd, and the cerebrum-that is the part of the brain that makes us human.
The three difference between animal brain and human brain will be state out on the basis of size, shape and number of folds.
What is brain?Brain is the main central part of the nervous system of all organism present in the earth.
Three differences between the structure of human brain and animal brain.
Size of the human brain is generally larger than the animal brain.Shape of the brains for humans and animals are different as they both have differnt folds in that.Cerebrum is present only in mammals, so that some animals will not have cerebrum.Hence three differences between human and animal brains are listed above.
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What can you infer is causing the cryosphere to change? Give two reasons. Explain why.
Answer:The crayosphere- it is the portion of the Earth's surface where water is in solid form for at least one month of the year..-has been shrinking in response to climate warming.The important outcome,however,is the change and the response the human social system (infrastructure,food ,water,recreation) will be have to that change...
I hope It helps
Answer:
50
Explanation:
mookie betts 50 is goated no cap
Which is TRUE about intermolecular
forces?
They are STRONGER than a chemical
bond
They are WEAKER than a chemical bond
Answer:
They are Weaker than a chemical
bondcorrected by the one in the comment section
Which is a benefit of genetically modified foods?
A.When foods are genetically modified, they are always resistant to disease and drought.
B.When foods are genetically modified, they no longer need to be studied.
C.The cost of research is included in the cost to the consumer.
D.The cost of food will decrease, and the quality of food will increase.
Answer:
Some benefits of genetic engineering in agriculture are increased crop yields, reduced costs for food or drug production, reduced need for pesticides, enhanced nutrient composition and food quality, resistance to pests and disease, greater food security, and medical benefits to the world's growing population.
I NEED HELP NOW!!!!!!!!!!!
Which ball (frame A or B) is moving with a higher velocity when it strikes the ground, and which ball has the greatest kenetic energy?
A: the ball in frame A had the highest velocity, and the ball in frame B has the highest kinetic energy
B: the balls in frame A and B have the same velocity, while the ball in frame B had the highest kenetic energy
C: the ball in frame B has the highest velocity and the highest kenetic energy
D: the ball in frame A has the highest velocity and the highest kenetic energy
A: the ball in frame A had the highest velocity, and the ball in frame B has the highest kinetic energy
How many moles in 5.125g of NaCl? In equation form!
Plzzzz! HELP ME!
Answer:
0.088mole
Explanation:
Given parameters:
Mass of the compound = 5.125g
Unknown:
Number of moles = ?
Solution:
To solve this problem, we need first find the molar mass of the given compound.
Molar mass of NaCl = 23 + 35.5 = 58.5g/mol
So;
Number of moles = [tex]\frac{mass}{molar mass}[/tex] = [tex]\frac{5.125}{58.5}[/tex] = 0.088mole
Will is learning about a new kind of plastic used to make models. He learns that infrared light is absorbed by the plastic, X-ray light is transmitted through the plastic, and visible light is reflected off the plastic. Will wonders if the plastic will melt if he shines the lights on it. Can light cause the plastic to melt? Why or why not? Does it matter what type of light he shines on the plastic?
Answer: Yes, I think light can cause the plastic to melt, as long as the energy from the light is absorbed by the plastic.
Explanation:
Visible light will not melt the plastic because the energy does not pass through the plastic, it reflects off ensuring that the plastic does not absorb the energy. X-ray light is transmitted through the plastic, unlike the visible light, but the energy still isn't absorbed by it. The infrared light is the only one left, it is absorbed by the plastic allowing it to change and melt the material, unlike the visible and x-ray lights.
The plastic will melt if the energy from the light is absorbed by the plastic.
What are Electromagnetic radiations?These are forms of electromagnetic waves which propagate through space
and carry electromagnetic radiant energy. Examples include:
X-rayVisible lightInfrared etcVisible light and X-ray light won't melt the plastic as a result of the energy
not being absorbed whereas in the case of Infrared lights, the energy is
absorbed which will led to the melting of the plastic.
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How many joules of heat are absorbed when 73 g water are heated from 30*C to 43*C? *
Answer:
3966.82 J
Explanation:
q=sm∆T
q=73×13×4.18
the specific heat for water is 4.18
Answer:
[tex]\boxed {\boxed {\sf 39,668.2 \ Joules}}[/tex]
Explanation:
We are given the mass and change in temperature, so we must use this formula for heat energy:
[tex]q=mc \Delta T[/tex]
The mass is 73 grams. Water's specific heat is 4.18 J/g × °C. Let's calculate the change in temperature
ΔT= final temperature - initial temperatureΔT= 43 °C - 30°C ΔT= 13 °CNow we know all the variables and can substitute them into the formula.
[tex]m= 73 \ g \\c= 4.18 \ J/g* \textdegree C \\\Delta T= 13 \ \textdegree C[/tex]
[tex]q= (73 \ g )(4.18 \ J/g*\textdegree C)(13 \textdegree C)[/tex]
Multiply the first numbers together. The grams will cancel.
[tex]q= 3051.4 \ J/\textdegree C (13 \textdegree C)[/tex]
Multiply again. This time, the degrees Celsius cancel.
[tex]q= 39668.2 \ J[/tex]
39,668.2 Joules of heat energy are absorbed.
An atom that has one or two valence electrons is most likely to be - Nonreactive only
A) with nonmetals
B) Reactive with metals
C) Highly reactive
D) nonreactive
Answer:
C) Highly reactive
Explanation:
An atom with one or two valence electrons more than a closed shell is highly reactive, because the extra valence electrons are easily removed to form a positive ion
According to the electronic configuration, an atom that has one or two valence electrons is most likely to be highly reactive as it can easily loose 1 or 2 electrons.
What is electronic configuration?Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
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Giving brainliest for correct answer!
Which of the following pairs of elements would form an ionic compound?
phosphorous/bromine
potassium/sulfur
nitrogen/iodine
oxygen/fluorine
Answer:
Explanation:
Ionic compound : These are the compounds in which the atoms are bonded through the ionic bond. The ionic bond are formed by the complete transfer of the electrons.
That means, the atom which looses the electron is considered as an electropositive atom and the atom which gains the electron is considered as an electronegative atom.
And these bonds are formed between one metal and one non-metal.
From the given pairs of elements, potassium and sulfur, magnesium and chlorine are form ionic compound because potassium and magnesium are the metals and sulfur and chlorine are the non-metals. So, they can easily form ionic compound by the complete transfer of electrons.
While the other pairs, sodium and potassium are the metals, nitrogen and iodine, chlorine and bromine, helium and oxygen are the non-metals. They do not form ionic bond.
what is the phenotype for the genotyep WW ?? I NEED HELP ASAP HELPP MEEEEE
Answer:
The genotype for the pink flower is RW, and the genotype for the white flower is WW. This would lead to a 50 percent chance of the offspring having a phenotype of pink
Explanation:
What is the percent composition by mass of oxygen in
magnesium oxide, MgO?
(Molar mass of MgO = 40.3 g/mol)
%
Your answer should be rounded to three significant figures. Do not include units
In your answer.
What is the percent composition by mass of oxygen in magnesium oxide, MgO?
Answer: 39.7 percent
The percent composition by mass of oxygen in MgO is 65.84.
What is mass?The mass of a thing is a measurement of how much matter it contains.
What is percent composition?Percent composition is the way through which percentage of elements can be determine very easily. Formula:
O% = [tex]M_{A}M_{T}[/tex] ×100
Calculation of percent composition .
For MgO , the mass of oxygen atom is 16.3 and mass of Mg atom is 24.3.
By adding mass of oxygen and Mg total mass will be 40.3.
Now, put the value of given data in above equation:
O% = [tex]M_{A}M_{T}[/tex]×100O%
= 16./24.3×100.
O% = 65.84.
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What structure actively moves water through a sponge?
Answer:
Answer is flagella
Explanation:
I hope it's helpful!
A exothermic reaction requires energy, produces energy, is energy-neutral.
Answer:
An exothermic reaction is going to produce energy.
Explanation:
rAn exothermic reaction is going to release energy meaning that your ending product will be negative. However if it is an endothermic reaction, it is going to absorb energy/requires energy, and will have an ending product that is positive.
Where does nearly all life get its energy from? *
Oxygen
A.Sun
B.Produce
C.Soil
What does a low number on the pH scale say about a solution? O A. The solution is changing, OB. The solution is an acid. O C. The solution is neutral. O D. The solution is a base,
Answer: B) The solution is an acid.
Explanation:
Answer:
B
Explanation:
Which statements are correct about a flowering plant? It may have both male and female flowers. It may have only male or female flowers. It may have both male and female parts in the flower. It must have both male and female parts in the flower.
Answer: the last one, It must have both male and female parts in the flower.
Explanation:
Using the same sample of gas (P = 475 torr , T = 21 °C ), we wish to change the pressure
to 4750 torr with no accompanying change in volume or amount of gas. What temperature T2 in
Celsius, is needed to reach this pressure?
Answer:
210°C
Explanation:
using the equation
P1/T1=P2/T2
475/21=4750/T2
T2= (21×4750)/475
T= 210°C
Which element has 5 energy levels and 2 valence electrons?
Answer:
Element 38: Strontium
Explanation:
What hold elements together to form compounds
Answer:
Chemical bonds are forces that hold elements together. it can be either covalent or ionic bonds that are these chemical bonds.
A beaker with 150 ml of water is placed on a hot plate. The beginning temperature is 22 oC. After 5 minutes the temperature is 87 oC. What is the amount of thermal (heat)energy absorbed by the water. 150 ml = 150 grams specific heat of water = 4.184 J/goC. show work plzzz
The amount of thermal energy absorbed by the water : Q = 40,794 J
Further explanationGiven
150 ml water
Temperature = 22 °C to 87 °C
specific heat of water = 4.184 J/g°C
Required
Heat absorbed
Solution
Heat can be formulated :
Q = m.c.Δt
Q = 150 g x 4.184 J/g°C x (87-22)
Q = 40,794 J
define the term valency
Answer:
Valency is the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with
Which one of these best describes an adaptation?
Answer:
c
Explanation:
Answer:
C
Explanation:
If not C it is D
Please help urgent Balance the following word equation:
Aluminum chloride +
Sodium -->
Aluminum +
Sodium Chloride
Coefficents must stay in the order shown above.
Answer:
AlCl3 + 3Na > Al + 3NaCl
Explanation:
AlCl3+Na → Al + NaCl
Al =1 Al=1
Cl =3 Cl = 1
Na=1. Na = 1
so balance
and it would be
Alcl3 + 3Na → Al + 3NaCl
why plastic containers are prefered for storing food
Answer:
Plastic is non-reactive. It does not react with water and air. Plastic is light, strong and durable and can be moulded into different shapes and sizes. It is cheaper than metals. Plastics are poor conductors of heat and electricity and can be used for making handles of frying pans.