Answer:
(-5)
Explanation:
pls help asap!! plssss
AgNO₃+NaCl⇒AgCl+NaNO₃
Further explanationDouble-Replacement reactions. Happens if there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product
Reaction
AB + CD⇒AD + CB
So for the option :
1. synthesis/combination reaction
2. decomposition reaction
3. double replacement reaction
4. single replacement reaction
How do I graph Charles's law equation?
Answer:
we needa see the equations
Iron is extracted from iron oxide in the Blast Furnace: Fe 2 O 3 + 3 CO → 2 Fe + 3 CO 2
a) Calculate the maximum theoretical mass of iron that can be made from 100g
of iron oxide.
b) In the reaction, only 65 g of iron was made. Calculate the percentage yield.
a. mass of iron = 69.92 g
b. percent yield = 93%
Further eplanationPercent yield is the compare of the amount of product obtained from a reaction with the amount you calculated
General formula:
Percent yield = (Actual yield / theoretical yield )x 100%
An actual yield is the amount of product actually produced by the reaction. A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients
a.
Reaction
Fe₂O₃+3CO⇒2Fe+3CO₂
MW Fe₂O₃ : 159.69 g/mol
mol Fe₂O₃
[tex]\tt \dfrac{100}{159,69}=0.626[/tex]
mol Fe₂O₃ : mol Fe = 1 : 2
mol Fe :
[tex]\tt \dfrac{2}{1}\times 0.626=1.252[/tex]
mass of Fe(Ar=55.845 g/mol) :
[tex]\tt 1.252\times 55.845=69.92~g[/tex]
b.
actual yield = 65 g
theoretical yield = 69.92 g
percent yield :
[tex]\tt =\dfrac{65}{69.92}=0.93=93\%[/tex]
how to determine the position of an element in the periodic table
Answer: An element's location in the periodic table is largely dependent on its electrons; the number of valence shell electrons determines its group, and the type of orbital in which the valence electrons lie in determines the element's block.
Explanation: i hoped that helped.
What can you make with molecules ??
Answer:
Read this passage from Through the Looking-Glass.
She looked at the Queen, who seemed to have suddenly wrapped herself up in wool. Alice rubbed her eyes, and looked again. She couldn't make out what had happened at all. Was she in a shop? And was that really—was it really a SHEEP that was sitting on the other side of the counter? Rub as she could, she could make nothing more of it: she was in a little dark shop, leaning with her elbows on the counter, and opposite to her was an old Sheep, sitting in an arm-chair knitting, and every now and then leaving off to look at her through a great pair of spectacles.
“What is it you want to buy?” the Sheep said at last, looking up for a moment from her knitting.
“I don't QUITE know yet,” Alice said, very gently. “I should like to look all round me first, if I might.”
“You may look in front of you, and on both sides, if you like,” said the Sheep: “but you can't look ALL round you—unless you've got eyes at the back of your head.”
The tone of this passage is best described as
serious and reflective.
scientific and factual.
light and romantic.
imaginative and humorous.Explanation:
ASAP pls help i'll give the brainliest
Answer:
B)
Explanation:
Order the density of the layers of the Earth from lowest density to highest
= inner core
= outer core
= asthenosphere
= oceanic crust
= continental crust
Answer:
the first is the inner core second is outer core third oceanic cruat fourth contenental crust fifth asthenosphere
Plants and animals can build up or break down rock by increasing weathering, erosion, and
deposition. true or false
Answer:
false
Explanation:
Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.
Newton Second Law of Motion, a = F/m tells us that acceleration (a) can be increased by _-
Answer:
Increasing the force
Explanation:
From Newton's second law of motion, we understand that force is a product of mass and acceleration.
Force = mass x acceleration.
Also, force is directly proportional to acceleration. The more the force applied on a body, the higher the acceleration it produces.
Mass is inversely proportional for force.
Am i gay?
I cant tell so i may need a third party to tell me whether i like men or not
Answer:
ok
Explanation: whatever you think
answer asap correctly for brainleist and pls give the right answer thx!
A
Explanation:
B is wrong because it talks about speed, C is wrong because it talks about direction, and D is wrong because it talks about the amount of tilt. A is correct because it's the only one that talks about the time of the orbit and the time of orbit determines the length of a year. :)
The melting point of matter is the temperature at which it changes from a:
Answer:
[tex]\boxed {\boxed {\sf Solid \ to \ liquid}}[/tex]
Explanation:
When heat is added to matter, the temperature rises. The average kinetic energy also increase and the matter melts.
When matter melts, it turns from a solid to a liquid. So, the melting point of matter is the temperature where it changes from the solid state of matter to the liquid state of matter.
Choose the electron configurations which are possible for an unexcited atom. Example 1 – 1s22s22p4 Example 2 – 1s22s22p63s23p33d1 Example 3 – 1s22s22p83s1 Example 4 – 1s22s22p63s1
Answer:
Examples 1, 3 and 4
Explanation:
An unexcited atom is an atom in the ground state i.e the atom has it's valence electrons in it's lowest energy level possible. This actually implies the normal electronic configuration of the atom. Thus, examples 1, 3 and 4 have the actual electronic configuration with there valence electrons in the lowest possible energy level.
Example 1: 1S² 2S² 2P⁴
Example 3: 1S² 2S² 2P⁶ 3S¹ (There seem to be a mistake in the question provided, P energy level can only 6 electrons not 8)
Example 4: 1S² 2S² 2P⁶ 3S¹
NOTE: If you take a look at example 2, it will be deduced that the 3P energy level has only 3 valence electrons and the last valence electron jumped to 3d energy level; making that atom appear to be in it's excited state.
awnser this they had no subject so i pick that for science for brainliest awnser
Answer:
B
Explanation:
A student added white crystals to a clear liquid. The crystals dissolved in the liquid. After a few seconds, the liquid became quite warm and then turned bright red in color. The first indication that a chemical change was taking place could be observed when----
Answer:
Is when there is an increase in the temperature of the liquid
Explanation:
Increase in temperature of the liquid is an indication that chemical change occur because chemical change occur through process of chemical reaction and it involve when two or more substances combine together to form new substances which is as a result of change in chemical composition. The crystals dissolved in water to form another new solution and it became warm and this indicate a chemical change, new substances are formed as a result of increase in temperature.
Help may give brainliest if is right.
Answer:
I would say the first one
Explanation:
Which answer best describes why water dissolve most salts? Water is polar and salts form ions in solution. Water is nonpolar and salts form ions in solution. Water has the same density as salt Water has a different density than salts
Answer: Water is polar and salts form ions in solution.
Explanation:
According to the concept of “Like dissolves like”, the polar solutes dissolve in polar solvents, and non-polar solutes dissolve in non-polar solvents.
Water being a polar solvent due to large electronegativity difference between hydrogen and oxygen is able to interact with the ions of the solute.
As water molecules are also polar in nature. So, oppositely charged ions interact with each other and dissolve in it.
Water can form hydrogen bonds with most of the substances and hence dissolve them . Thus water is considered as a universal solvent.
Answer: Water is polar, and salts form ions in solution
Explanation: Took MYA
A teacher attaches two slinky springs to a fixed support. The springs are moved, as shown in the image. Wave A wave B What property of the wave does the teacher change in the movement of each slinky? amplitude,frequency, speed, or wavelength
Answer:
a changes more because it going higher
Explanation:
Answer:
They will be the same because amplitude doesn't affect speed. A physics teacher attaches a slinky to the wall and begins introducing pulses with different wavelength. The denser the medium at the compression, the greater the amplitude of the wav
Explanation:
which of the following statements is true?
A. A technology society has no impact on the environment.
B. A technology society has a completely positive impact on the environment.
C. A technology society has both a positive and negative impact on the environment
D. A technology society a completely negative impact on the environment.
Please select the best answer from the choices provided
Answer:
C. A technology society has both a positive and negative impact on the environment
Explanation:
We are using up earth's resources but bettering social society!
Have a nice day,
PumpkinSpice1♥
What process is required for minerals to crystallize from magma
Answer:
Chemical differentiation
Explanation:
The process by which minerals crystallize out of magma is termed chemical differentiation. Some times, it is referred to as magmatic differentiation.
Minerals have different properties and at certain environment, it comfortable for the settle out of magma. Some minerals can crystallize out at very high temperature. Some will form at medium temperature whereas, some are low temperature minerals. Based on the properties of the minerals in a melt, a minerals will differentiate at various temperature and pressure regimes.A common characteristic shown by suspensions and colloids is:
the particles of both can pass through a filter paper.
the particles of both are visible to naked eye.
both are heterogeneous
the particles do not settle at the bottom under gravity.
what can the shape of a molecule affect?
Answer:
Comrades it's B
Explanation:
You can trust me or not but it will be your fauit if you fail so i say trust me comrade. Glroy to Alpha!
A molecule's shape greatly influences the polarity of the compound, the molecular structure has an impact on molecular characteristics. The shape of a molecule affect the molecule's function. Therefore, option B is correct.
What is molecule ?Based on the environment, the term may or may not include ions that meet this requirement. A molecule is a collection of two or more atoms held together by the attractive forces known as chemical bonds.
Molecule shape play a key role in anticipating how one molecule may interact with another, as well as in determining macroscopic features like melting and boiling points.
Polar substances have higher boiling and melting temperatures, tend to dissolve in other polar compounds, and can either form solids or liquids.
Thus, option B is correct.
To learn more about the molecule, follow the link;
https://brainly.com/question/19556990
#SPJ5
I will give brainliest to answer this question right.
Which substance plays a major role in the eutrophication process?
A. ozone
B. salt
C. iron
D.phosphorus
Answer:
The substance is phosphorus or D!
Hope this helps!
Which statement describes the blood type of a person with the alleles IAi?
It is type AB because I and i are codominant.
It is type AB because A and i are codominant.
It is type A because i is dominant and A is recessive.
It is type A because A is dominant and i is recessive.
Answer:
I answer this question I think I said the second one
Answer:
yep its the second one
Explanation:
11/9/2020
Describe the types of possible
weathering that has occurred to
this boulder
Use vocab words to describe what
is happening
A natural resource that is replaceable through a cycle in nature or sustainable practice is called a ______________.
Answer:
renewable recource.
Explanation:
why water can be consider as an acid as well as base .explain briefly
What mineral is used in paint and roofing, is nonmetallic, has cleavage, and a hardness of 2?
Answer:
Muscovite is the mineral
Example for next four problems:
Compound formula: MgCl2
Element: Mg
# of Atoms: 1
Element: Cl
# of Atoms: 2
gram formula weight (g): 95.21
Compound Formula: HCI
Element H
# of Atoms: (Options are 1, 2, and 3)
Element: CI
# of Atoms: (Options are 1, 2, and 3)
gram formula weight (g): (Options are 36, 36.46, and 36.50)
Answer:
Compound formula : HCl
Element H
# atoms:1
Elements Cl
#atoms : 1
gram formula weight (g) = 36.46
why do humans pump water from underground?
Answer:
Most wells do not get their water from underground rivers, but instead get the water from aquifers. Aquifers are layers of rock and soil with water flowing through their small pores. ... New water, such as from rain or melting snow, drips down into the ground through the pores and cracks in the rocks and soil.
Explanation:
Answer:
Pumping can affect the level of the water table. Groundwater occurs in the saturated soil and rock below the water table. If the aquifer is shallow enough and permeable enough to allow water to move through it at a rapid-enough rate, then people can drill wells into it and withdraw water.
