Answer:
b
Explanation:
Silicon has the chemical properties that are most similar to those of carbon
Use the drop down menus to answer the questions. In what type of plate boundary did subduction occur? In what type of plate boundary did new crust form? In what type of plate boundary did mountains form? In what type of plate boundary did volcanoes form? In what type of plate boundary did a river change its path? Use the drop down menus to answer the questions. In what type of plate boundary did subduction occur? In what type of plate boundary did new crust form? In what type of plate boundary did mountains form? In what type of plate boundary did volcanoes form? In what type of plate boundary did a river change its path? Use the drop down menus to answer the questions. In what type of plate boundary did subduction occur? In what type of plate boundary did new crust form? In what type of plate boundary did mountains form? In what type of plate boundary did volcanoes form? In what type of plate boundary did a river change its path?
Answer:
the answers to this is Convergent, Divergent, Convergent, Convergent, and Transform
Explanation:
i just answered it :))
In different types of plate boundaries, various geological features occur such as volcano and mountain formation.
What are plate boundaries?Plate boundaries are the areas where the edges of two tectonic plates meet.
Plate boundaries can either be divergent, convergent, or transform.
At different plate boundaries, different geological activities occur.
At convergent plate boundaries, subduction occurs.At divergent plate boundaroes, new crust forms.At convergent plate boundaries, mountains form.At convergent plate boundaries, volcanoes form. At transform plate boundaries, a river change its path.Therefore, at different types of plate boundaries, various geological features occur.
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Helpppppppppppppppppppppppp
Answer:
C
Explanation:
all of the fish, bacteria, and mammals that live in a lake
hope this helps!
Protons are in the nucleus of the atom and have a positive charge.
True or False?
What is the formula for Iron(IV) phosphite
Answer:
The answer is Iron phosphide (Fe2P)
What happens when a chemical reaction reaches equilibrium
Solar energy converts ___ into either ___ energy or electrical energy.
electromagnetic, thermal
electromagnetic, potential
thermal, nuclear
chemical, thermal
Answer:
Hey mate....
Explanation:
This is ur answer.....
Solar radiation can be converted either into thermal energy (heat) or into electrical energy.Hope it helps!
mark me brainliest plz......
Follow me! :)
Analyzing models compare an atom’s structure to a ladder. Identify one way in which ladder is not a good model from the atom.
Answer:
Climbing a ladder assumes that you would touch/use each step only once. Electrons will take one layer that is empty first, and previous layers or "steps" will continue being filled with additional electrons only when every other layer is occupied by, at least, one electron.
Explanation:
A good analogy is what passengers in a bus do. Everyone tries to sit alone first and only when every pair of seats has a person already seated, people will use them as well, sitting next to each other.
Which statement best describes a chemical reaction in which energy is released?
The chemical reaction in which energy is released is referred to as an Exothermic reaction.
What is an Exothermic reaction?This is the type of reaction in which the overall standard enthalpy change is negative.
This is however as a result of the energy being released when a chemical reaction takes place under certain conditions.
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3. How does genetic variation allow humans to survive long-term? Which
type of reproduction is responsible for genetic variation?
Answer:
more genetic variation within a population usually enables more phenotypic variation.
Explanation:
Because natural selection acts directly only on phenotypes, Some new alleles increase an organism's ability to survive and reproduce, which then ensures the survival of the allele in the population.
Genetic variation lets the organisms survive long term as it increases the phenotypic and the genotypic variation. Genetic variation is due to the type of reproduction that involves two parents.
What is genetic variation?Genetic variation is the modification of the original genome of the organism by genetic recombination and mutation that can be beneficial in the survival and the natural selection process.
Reproduction involving two parents of the same species allow genetic variation as the process of independent assortment and crossing over of the chromosomes inherited from both creates species with different traits and genotype.
Therefore, the reproduction involving two parents results in genetic variation.
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Give 1 example of each.
Kinetic , Gravitational Potential , Chemical , Sound , & Radiant energy.
bullet fired from a gun
falling apple from tree
stone at a height
rusting of iron
loud speaker
Why does a DNA fingerprint require millions of copies of each DNA fragment
Answer:
Because it can identify a person.
A DNA fingerprint is a piece of DNA so distinct that it can prove a person's identity. These distinct areas can take on many different forms, but each form is unique to any one individual.
PCR allows the amplification of a single copy of DNA into millions of copies. However this technique requires that the DNA of interest already be of a known sequence in order to design primers that will specifically hybridize to the target DNA.
It is important as:
It's used as evidence in courts, to identify bodies, track down blood relatives, and to look for cures for disease.
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Which of the following is a unit of volume?
A.
milliliter
B.
pound
C.
gram
D.
centimeter
Answer:
a. milliliter.
Explanation:
I hope this helps
Answer:
milliliter
Explanation:
think liter
Alesha, Kayden,Leo and Caroline are lab partners. They completed the lab in which they put a small marshmallow in a closed, see-through container. They then pushed a plunger down to decrease the volume of the container. They observed the marshmallow looking squished and crumpled. For their lab write up, they must identify the relationship between volume, temperature and pressure of a gas to explain what they saw during this experiment. Determine which student is correct from the statements below.
A.
Alesha says the lab showed that when volume is decreased, pressure is increased. The increase in the pressure in the container is what made the marshmallow look squished and crumpled.
B.
Caroline says the lab showed that when volume is increased, pressure is increased. The increase in the pressure in the container is what made the marshmallow look squished and crumpled.
C.
Kayden says lab showed that when volume is decreased, temperature is increased. The increase in the temperature in the container is what made the marshmallow look squished and crumpled.
D.
Leo says the lab showed they increased the temperature of the container by breathing on it and decreased the volume by pushing down the plunger. Both of increasing the temperature and decreasing the volume caused the pressure to decrease and make the marshmallow look squished and crumpled.
In the compound H2O electrons are A.gained B.lost C.transferred or D.shared?
Which type of cell would you expect to contain large amounts of mitochondria?
fat cells
muscle cells
liver cells
skin cells
muscle cells hope it helps
The unit of measure for potential and kinetic energy is the
Answer:
kilograms x meters2/seconds2
Explanation:
Answer:
kilograms x meters2/seconds2
Explanation:
TICLA ruuis SLCLLICU 10115CI.
Question 3 (1 point)
Which option correctly ranks the states of matter from slowest to fastest particle
speed.
gas, liquid, solid
solid, liquid, gas
solid, gas, liquid
gas, solid, liquid
Is temperature and pressure directly proportional or inversely proportional?
A. Inversely proportional
B. Directly proportional
The beaks of finches found on various galapagos islands differed based on:
A the size of their land
B the length of their wings
c the available food supply
d the predators that hunted them
s
What is the molarity of a solution made by diluting 0.025L of 6.0 M HCl until
the final volume of the solution is 1.75 L?
Answer:
Explanation:
Use the dilution equation: M1V1 = M2V2
M1 = 6.0 M
V1 = 0.025 L
M2 = ?
V2 = 1.75 L
(6.0 M)(0.025 L) = M2(1.75 L)
Solve for M2 --> M2 = 0.086 M HCl
Please help!!! Will give brainlist
What is the rate of effusion of Xenon (Xe) gas if the rate of Chlorine (Cl) gas escaping
through a fluorescent light fixture is 2.5 L/min?
On the Periodic Table, which elements are predominantly (mostly) gases with low densities?
Alkali Metals,
Metalloids
Transition Metals
Non-Metals
The mass of an atom may be found by adding the
O protons and neutrons
O molecules
o electrons and protons
O atoms
Answer:
protons and neutrons
Explanation:
Which of the following do not happen when an object is slowing down :
A. Is decelerating
B. Is constant
C. Has negative acceleration
D. Is decreasing its speed
What is the empirical formula of a compound that is 7.74% H and 92.26% C? What is the molecular formula if the molar mass is 78.1134 g/mol?
What is the empirical formula of a compound that is 8.68% O, 6.56% H, and 84.75% C? What is the molecular formula if the molar mass is 184.2372 g/mol?
What is the empirical formula of a compound that is 90.51% C and 9.49% H? What is the molecular formula if the molar mass is 106.167 g/mol?
What is the empirical formula and molecular formula for a substance that is 39.72% C, 1.67% H, and 58.61% Cl if the molar mass of the substance is 181.44 g/mol?
What is the empirical formula of a compound that is 47% Pt, 18.84% K, and 34.16% Cl? What is the molecular formula if the molar mass is 415.098 g/mol?
What is the empirical formula of a compound that is 6.35% H, 55.83% Cl, and 37.83% C? What is the molecular formula if the molar mass is 127.0132 g/mol?
Answer:
For all these questions, we want to find the empirical and molecular formulae of various compounds given their percent composition and molar mass. The technique used to answer one of the questions can accordingly be applied to all of them.
Approaching the first question, we treat the percentages of each element as the mass of that element in a 100 g compound (as the percentages add up to 100%). So, our 100 g compound comprises 7.74 g H and 92.26 g C.
Next, we convert these mass quantities into moles. Divide the mass of each element by its molar mass:
7.74 g H/1.00794 g/mol = 7.679 mol H
92.26 g C/12.0107 g/mol = 7.681 mol C.
Then, we look for the molar quantity that's the smallest ("smaller," in this case, since there are only two), and we divide all the molar quantities by the smallest one. Here, it's a very close call, but the number of moles of H is slightly smaller than that of C. So, we divide each molar quantity by the number of moles of H:
7.679 mol H/7.679 mol H = 1
7.681 mol C/7.679 mol H ≈ 1 C/H (the value is actually slightly larger than 1, but we can treat it as 1 for our purposes).
The quotients we calculated represent the subscripts of our compound's empirical formula, which should provide the most simplified whole number ratio of the elements. So the empirical formula of our compound is C₁H₁, or just CH.
Here, it just so happens that we obtained whole number quotients. If we end up with a quotient that isn't a whole number (e.g., 1.5), we would multiply all the quotients by a common number that would give us the most simplified whole number ratio (so, if we had gotten 1 and 1.5, we'd multiply both by 2, and the empirical formula would have subscripts 2 and 3).
To find the molecular formula (the actual formula of our compound), we use the molar mass of the compound, 78.1134 g/mol. The molar mass of our "empirical compound," CH, is 13.0186 g/mol. Since our empirical formula represents the most simplified molar ratio of the elements, the molar masses of our "empirical compound" and the actual compound should be multiples of one another. We divide 78.1134 g/mol by 13.0176 g/mol and obtain 6. The subscripts in our molecular formula are equal to the subscripts in our empirical formula multiplied by 6.
Thus, our molecular formula is C₆H₆.
---
As mentioned before, all the questions here can be answered following the procedure used to answer the first question above. In any case, I've provided the empirical and molecular formulae for the remaining questions below for your reference.
2. Empirical formula: C₁₃H₁₂O; molecular formula: C₁₃H₁₂O
3. Empirical formula: CH; molecular formula: C₈H₈
4. Empirical formula: C₂HCl; molecular formula: C₆H₃Cl₃
5. Empirical formula: Cl₄K₂Pt; molecular formula: Cl₄K₂Pt
6. Empirical formula: C₂H₄Cl; molecular formula: C₄H₈Cl₂
What happened during the fusion reaction shown?
Answer:
the answer to this question B. Two H nuclei that fused into one He necleus
Explanation:
Two hydrogen atoms fused to one helium molecule, hence option B is correct.
What is fusion?Fusion is defined as a process in which two or more atomic nuclei unite to create new atomic and subatomic particles. Heat, which is produced when two atoms fuse, is the key to generating energy. Similar to how nuclear fission produces energy, this heat can be utilized to warm water, produce steam, and turn turbines to produce electricity.
In the core of the Sun, hydrogen is being converted to helium. This phenomenon is known as nuclear fusion. Fusion is what powers both the sun and the stars. One example of this kind of reaction is when two hydrogen atoms combine to form a helium atom. During the process, a portion of the hydrogen's mass is converted into energy.
Thus, two hydrogen atoms fused to one helium molecule, hence option B is correct.
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why are metals poor choices for coffee mugs?
Answer:
They will stay too hot.
Explanation:
You would burn yourself on the mug and your drink would be too hot to drink.
Jason took 6 hours to travel 540 km. For the first 140 km, he took 2 hours.
What was his average speed during the first two hours? ___ km/h
How much distance did he cover in the last four hours of his journey? ___ km
What was his average speed for the rest of the journey? ___ km/h
Answer: Average speed for the first two hours was 70 km/hr
Covered 400 km in the last four hours
Average speed for the rest of the journey was 100 km/hr
Explanation: 140 km / 2 hours = 70 km/hr
540 km - 140 km = 400 km remaining for the last four hours
400 km / 4 hours = 100 km/hr for the last four hours
2. Mitosis is great for repair and damage. TRUE OR FALSE
Answer:
TRUE
HOPE THIS HELPS!
Explanation:
Answer:
True
Explanation: