Answers
Answer:
iwan loptop di ba yan isearch mo nalang
Explanation:
baka lang ka naman makakita ng swerte na aswers
Related Questions
what chemical reaction type is Pb + 2 H3PO4 --> 3 H2 + Pb3(PO4)2
Answers
Answer:
single displacement reaction
Explanation:
it is because an atom(Pb) dispalces another atom(H) in H3PI4
The given chemical reaction is single displacement reaction.
What is single displacement reaction?When one element in a molecule gets replaced by another, is therefore called a single displacement reaction.
The given reaction is Pb + 2 H3PO4 → 3 H2 + Pb3(PO4)2
It can be seen that when lead is treated with H3PO4 then it will give Pb3(PO4)2 and hydrogen reaction. It is a kind of single displacement reaction.
Therefore, the given reaction is single displacement reaction.
To know more about single displacement reaction.
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Can someone help me with this?
Answers
Answer:
Its Vog
Explanation:
Which is an example of chemical change?
Answers
Answer:
Burning, cooking, rusting and rotting are examples of chemical changes.DUE IN A FEW!!!!!! PLS HELP
Answers
Answer:
the answer is is C 465 grams
humans have a total of 46 chromosomes therefore, humans inherit ____ chromosomes from each parent. (use numerals for the answer)
Answers
Answer:
23
Explanation:
there are 23 pairs of chromosomes
46 individula chromosomes
but each parnet contribute one chromosome to each pair
Answer:
23 :)
Explanation:
Calculate the percentage by mass in each element
N in NH3
Answers
Answer:
82.35%.
Explanation:
Mass of 1 molecule of ammonia
NH₃ = 14+3(1)
= 17
Calculating percentage by mass of N.
[tex]\%=\dfrac{\text{Mass of Nitrogen atom}}{\text{Mass of ammonia molecule}}\times 100[/tex]
[tex]\%=\dfrac{14}{17}\times 100\\\\=82.35\%[/tex]
So, the required percentage is 82.35%.
According to the carbon cycle, what two processes increase CO2 in the atmosphere?
Answers
Answer: Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement.
Explanation: Hope this helps :)
Please help... its due today and my teacher isn't explaining very good I have 100 points will give 40 to you a brainliest and thanks answers are at the bottom but I need the work done also
Answers
Answer:
2Na2O2 + 2H2O → 4NaOH + O2 is the balanced ver of Na2O2 + H2O - NaOH + O2
Explanation:
What is the general formula for a secondary anime?
A. RNH2
B.H2NRNH2
C.RN2H
D.R2NH
Answers
Answer:
D.R2NH
Explanation:
The general formula of a secondary amine is given as:
R2NH
Amines are organic compounds that show an appreciable basicity. They are regarded as the derivatives of ammonia where one or two of the three hydrogen atoms has/have been replaced by the alkyl or aryl groups.
In a secondary amine, two hydrogen atoms of ammonia have been replaced by alkyl and or aryl groups.
Answer:
d. R2NH
Explanation:
edge 2021
What element was most recently discovered?(2010 A.D.)
Answers
Tennessine (Ts)
Element #117
Discovered: April 5, 2010
what is the smallest atomic radius
Answers
Answer:
Helium
Explanation:
Helium has the smallest atomic radius. This is due to trends in the periodic table, and the effective nuclear charge that holds the valence electrons close to the nucleus.
How much current is drawn by a 40-W bulb in a 120-V circuit?
Answers
If 0.621miles = 1 km, how many miles will a person run during a 15 km race?
Answers
what type of potential energy do fuels contain
Answers
Answer:
It contains chemical potential energy.
Explanation:
1. We sometimes use words differently in a
science setting than we do in our daily lives.
Examples of this are force, work, and energy.
(a) Use a dictionary to explain the difference
between how each of these words is used
in daily conversation and how each is
used in science and technology. You may
also want to go to the Internet for help.
Go to Nelson Science o to Nelson Science
(b) Do these differences in meaning make
it easier or harder to learn science and
technology? Explain.
(c) Are the words mass and weight part of this
same problem? Explain. How should the
terms be used?
Answers
Answer:
work can be the operation or function of something but it can also be the energy transfer that occurs when an object is moved or in everyday life it means to do something (specific thing). I don't know all of them by the way.
Explanation:
the differences in meaning sometimes makes it easier and sometimes makes it harder to learn science and technology. sometimes the everyday meaning might somehow be related to the science meaning which helps you grasp everything better while sometimes the meaning is so far fetched it makes it harder to know what you are learning. hope this helps
Which property of water makes it a good choice for use in heat exchangers? Choose the correct answer.
A)high entropy
B)low entropy
C)low specific heat
D)high specific heat
Answers
Answer:
The correct answer is D)high specific heat
Explanation:
The specific heat indicates the amount of heat required to raise the temperature of a substance in 1 unit of temperature. The specific heat of water is around 4.18 J/g.°C. That means that 1 gram of water is able to retain a high amount of heat (4.18 J) when the temperature is raised to 1°C. Compared with other substances, this specific heat capacity is higher. Thus, water is a good choice for use in a heat exchanger.
What is the molar mass of Sn(CO3)2?
Answers
Answer:
The molar mass and molecular weight of Sn(CO3)2 is 238.728.
Explanation:
Molar mass of any molecule can be calculated by adding mass of all individual atoms that comprises the compound. The Molar mass of [tex]Sn(CO_{3})_{2}[/tex] is 238.72g/mol.
What is molar mass?Molar mass is defined as mass of one mole of a molecule or compound. It's SI unit is g/mole. The other term that is used for molar mass is molecular weight, formula unit mass. Molar mass is extensive property as it depends on the mass of individual atoms that constitutes the molecule.
Mass of tin= 118.71 g.mol
Mass of Carbon=12g/mol
mass of Oxygen= 16g/mole
Molar mass of [tex]Sn(CO_{3})_{2}[/tex] = 1×mass of tin+2×mass of carbon+6×mass of oxygen
substituting all the values we get
Molar mass of [tex]Sn(CO_{3})_{2}[/tex] = 1×118.71+2×12g/mol+6× 16g/mole
Molar mass of [tex]Sn(CO_{3})_{2}[/tex] =118.71 +24+66
Molar mass of [tex]Sn(CO_{3})_{2}[/tex]=238.72g/mol
Therefore the Molar mass of [tex]Sn(CO_{3})_{2}[/tex] is 238.72g/mol
To know more about Molar mass, here:
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The ability of iron to conduct electricity is a physical property of iron. *
True
False
Answers
Answer:
True
Explanation:
A physical property is a property that can be measured without changing the chemical composition of the substance.
The chemical composition of iron does not change when it conducts electricity so conductivity is a physical property.
Hope that helps.
Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, the given statement is true.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.
A physical property is a property that can be measured without changing the chemical composition of the substance. So, ability of iron to conduct electricity is a physical property of iron
Therefore, the given statement is true.
To know more about element, here:
https://brainly.com/question/8460633
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During the process of condensation, water vapor does what
Answers
Answer: the water molecules become more organized and heat is released into the atmosphere as a result.
Explanation:
Question 2/5
The definite chemical composition of a mineral refers to
A. the mineral being created in a chemical laboratory
B. the number of elements from the periodic table that make up the mineral
C. the crystalline structure
D. the solid state of the mineral
Answers
A definite chemical composition means that all occurrences of that mineral have a chemical composition that varies within a specific limited range and the atoms that make up the mineral must occur in specific ratios.
Please help me iv'e been stuck on it for 5 hours and it's science please help me and this better be worth it because i haven't been on brainly and i don't have much points rn so can someone please help me thank you
Answers
Answer:
1.)Elements
2.)Compound
3.)Subscript
4.)Formulas
Explanation:
Answer:
this is my other account btw and i just wanna thank you so much i don't want to fell this semester and now ima mark you brainliest thank you so so so much
Explanation:
Which has a greater ionization energy: lithium or bromine? Which has a greater ionization energy: vanadium or sodium?
Answers
2. Vanadium has a greater ionization energy
hi can you pls help :)
Answers
Answer:i think it is c, it explodes in water because that’s a chemical reaction
Explanation:
How many strawberries would you need to make 12 smoothies?
Answers
Answer: Hey! You need 48 Strawberries to make 12 smoothies.
Explanation: I knew this before but needed to make sure if it's true. So I tested it by myself and got it!
You are very welcome!
You need 84 strawberries to make 12 smoothies.
What is multiplication?Multiplication is a mathematical arithmetic operation. It is also a process of adding the same types of expression for some number of times.
Example - 2 × 3 means 2 is added three times, or 3 is added 2 times.
Given:
Martha needs 28 strawberries to make 4 smoothies.
To make one smoothie,
Martha needs = 28/4 = 7 strawberries.
To make 12 smoothies,
Martha needs = 12 x 7
= 84 strawberries.
Therefore, you need 84 strawberries.
To learn more about the multiplication;
https://brainly.com/question/19634536
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The complete question:
Martha needs 28 strawberries to make 4 smoothies.
How many strawberries would Martha need to make 12 smoothies?
HEY! Nicki Minaj is the queen of rap.
Answers
Answer:
O my OMG
Explanation:
Remember Nicki vs. Cardi
The uncertainty in the measurement 1500 m is
Answers
Answer:
Its 1500 meters, which is equal to 0.9320568 miles. Hope this helps!
Explanation:
plzz help guyss I'm so confused
Starting from rest, you reach a speed of 20 m/s in 4 seconds. What is your acceleration?
Answers
How can the structure of atoms be
connected to a colorful firework
display?
Answers
These metallic substances are actually metal salts, which produce luminescent light of different colors when they are dispersed in the air. This light is produced by electrons inside the metal atoms
Hope this helped!
How many unpaired electrons are present in V3+?
Answers
Answer: two unpaired
Explanation: In general, electrons are removed from the valence-shell s-orbitals before they are removed from valence d-orbitals when transition metals are ionized. And thus, V3+ is paramagnetic, because it has two unpaired 3d-electrons.
What three consumers live in the epipelagic zone?
Answers
The epipelagic zone reaches from the surface of the ocean down to around 650 feet. This is the zone most exposed to light, and as such is host to the highest concentrations of the ocean's life. There are thousands of animals that roam this zone, including dolphins, most sharks, jellyfish, tuna and corals.
(From Internet I’m being honest)