Answer:
Cesium
hope this helps :)
Question 6 (1 point)
How much heat, in calories, is necessary to boil 55g of ice at 100 Celcius?
Heat of Vaporization: 540 cal/g
Heat of Fusion: 80 cal/g
a
OO
С
8000
54000
5500
4400
29700
OC
e
Answer:
The correct option is;
d 4400
Explanation:
The given parameters are;
The mass of the ice = 55 g
The Heat of Fusion = 80 cal/g
The Heat of Vaporization = 540 cal/g
The specific heat capacity of water = 1 cal/g
The heat required to melt a given mass of ice = The Heat of Fusion × The mass of the ice
The heat required to melt the 55 g mass of ice = 540 cal/g × 55 g = 29700 cal
The heat required to raise the temperature of a given mass ice (water) = The mass of the ice (water) × The specific heat capacity of the ice (water) × The temperature change
The heat required to raise the temperature of the ice from 0°C to 100°C = 55 × 1 × (100 - 0) = 5,500 cal
The heat required to vaporize a given mass of ice = The Heat of Vaporization × The mass of the ice
The heat required to vaporize the 55 g mass of ice at 100°C = 80 cal/g × 55 g = 4,400 cal
The total heat required to boil 55 g of ice = 29700 cal + 5,500 cal + 4,400 cal = 39,600 cal
However, we note that the heat required to vaporize the 55 g mass of ice at 100°C = 80 cal/g × 55 g = 4,400 cal.
The heat required to vaporize the 55 g mass of ice at 100°C = 4,400 cal
Which question should you ask to find out the length of a planet's year?
When do people generally experience rapid growth for a second time?
between the ages of 3 and 5
between the ages of 15 and 20
between the ages of 25 and 29
between the ages of 8 and 14
Which system contains the pituitary, adrenal, and thyroid glands?
reproductive
endocrine
circulatory
respiratory
Item 17
Which action occurs in the third stage of cell division?
The nuclear membrane disappears.
The nuclear material of a cell is copied exactly.
The cell forms two nuclei.
The nuclear material separates, with half moving to either side of the cell.
Answers:
1. People generally experience rapid growth for a second time between the ages of 15 and 20
2. The endocrine system contains the pituitary, adrenal, and thyroid glands.
3. The nuclear membrane disappears in the third stage of cell division?.
Explanation 1:
Between the ages of 15 and 20, puberty causes the release of multiple hormones, which causes rapid growth among other things.
Explanation 2:
The reproductive system contains the ovaries (female) and testes (male).
The endocrine system contains the pituitary, adrenal, and thyroid glands.
The circulatory system contains three independent systems that work together, the heart (cardiovascular), the lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic).
The respiratory/pulmonary system contains the nose, mouth, throat (pharynx), voice box (larynx), windpipe (trachea) , airways (bronchi) , and lungs.
Explanation 3:
Mitosis is the process in cell division where the nucleus divides into two nuclei, each with an identical set of chromosomes.
Interphase: occurs when the cell begins to replicate the nuclear DNA material
Stage 1 - Prophase: chromosomes begin to undergo a condensation process that will continue until metaphase. The spindle also begins to form as the two pairs of centrioles move to opposite poles.
Stage 2 - Prometaphase: Chromosomes are pulled in opposite directions by microtubules growing out from both poles of the spindle until balanced.
Stage 3 - Metaphase: The centromeres of all the cell's chromosomes line up at the equator of the spindle.
Stage 4 - Anaphase: The chromosomes move away from one another to opposite poles of the spindle.
Stage 5 - Telophase and Cytokinesis: The chromosomes reach the poles, the nuclear membrane then reforms, and the chromosomes begin to decondense. This is followed by cytokinesis, or the division of the cytoplasm into two daughter cells.
Most of my sources say that the nuclear membrane occurs during prophase, but the stages are listed in this order. Regardless, your answer would be A. The nuclear membrane disappears.
I hope this helps!
Whats the answer giving brainlist to first correct one
Answer:
C
Explanation:
Which of the following is a true statement about atomic nuclei?
Answer: they have a net positive charge
Explanation:
11. Water (H2O) cannot be turned into salt (NaCl) through a chemical
reaction because *
о
A. salt is a mixture of atoms.
B. salt and water are made of different atoms.
C. water is made of three atoms.
O D. water contains liquid atoms and salt contains solid atoms.
Answer:
The correct answer is - option B. salt and water are made of different atoms.
Explanation:
Water is made up of the hydrogen and oxygen atom with the ratio of 2:1 joined together with hydrogen bonds between hydrogen and oxygen which form.
NaCl or salt is a compound that is made up of a Na+ ( sodium ion) atom and Cl- (chlorine ion) atom with an ionic bond in between them forms a crystallized compound.
Thus, the correct answer is - option B. salt and water are made of different atoms.
halppp can anyone come up with a slogan for anti smoking
Answer:
"Your Choice: Liberation From Your Own Choices or Continue the Choice That Decreases Your Liberation."
Explanation:
Liberation is the freeing or release from something restraining you. In this case, smoking holds you back from doing the things you used to do.
It's not that creative, but I hope this is good enough for you! :D (don't smoke)
Dry ice goes directly from the solid phase to the gas phase. What phase
change is being represented? *
O Solid
O Sublimination
O Condensation
O
Freezing
Answer:
Sublimation is being represented.
Sublimation is the transition from solid to gas state
Hope this helps! Have a good day!
Answer:
Sublimation
Explanation:
Sublimation is when a solid turns into a gas
is Sulfur dioxide is a covalent compound?
Answer:
true
Explanation:
sulfer shares a total of four valence electrons with the two oxygen atoms. each oxygen atom shares two valence electrons with sulfer so sulfer dioxide is a covalent compound.
Which structure carries instructions for producing the proteins that help make a person’s hair curly?
phosphate
deoxyribose
lipid
gene
Answer: Bipalium kewense is a species of flatworm that can reproduce sexually; however, instead it usually breaks into two pieces, each of which becomes a fully functioning adult.
What is the main method of reproduction for these flatworms?
binary fission
fragmentation
sporulation
fertilization
Answer:
The correct answer should be :D). Gene on edg.
answer correctly for a brainleist! :)
Answer:
summer
Explanation:
Why because the earth is around the sun the
what are the products of
C6 H12 + 9O2
?
A block with a volume of 24 cm3 has a mass of 1200 g. What is the density of this block
Answer:
The answer is 0.02 g/cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question we have
[tex]density = \frac{24}{1200} = \frac{1}{50} \\ [/tex]
We have the final answer as
0.02 g/cm³Hope this helps you
What can you make with molecules
Answer:
water
Explanation:
Answer:
Explanation: Las moléculas se encuentran fuertemente enlazadas con la finalidad de formar materia. Las moléculas están formadas por átomos unidos por medio de enlaces químicos.
Please hurry i really need it fast
IM.THE.ONLY.ONE.WHO.USES.CAPS.WHEN.I.GIVE.FREE.POINTS.IF.YOU.KNOW.YOU.KNOW.
AND I QUOTE: "I made beesceets" ON HISTORY SIDE OF BRAINLY. THEY ARE SO COOL. OML
anyway, first answer gets brainly.
Answer:
umm wht thanks for the free points tho much love x
Explanation:
Which of the changes below would make Paul an effective interpersonal communicator?
I. Change his opening to a more calm and positive approach.
II. In his feedforward he should establish an appropriate timeframe and location.
III. He should add more criticism in his feedback.
IV. In the business section of his conversation he should include a list of everything Pat has
ever done wrong.
Answer:
i would say number 3 that was number 3
By changing his opening to a more calm and positive approach pauld can become a an effective interpersonal communicator.Thus, option A is correct.
What is interpersonal communication?Interpersonal communication is the way of communicating messages with each other. From person to person the way or tone of interpersonal communication will change.
We have to keep a good and polite behaviour to everyone when communicating with them. If we are going to criticize more it will hurt some people more than we expect.
To approach in a positive manner, we have to avoid prejudices and predictions and more expectation about others. But keep them in a polite manner in a very genuine friendship.
Interpersonal communication is important in any field especially in business field where, people have to gather , plan and contribute with each other. Hence Paul have to open more calm and positive approach.
To find more about interpersonal communication, refer the link below:
https://brainly.com/question/13682625
#SPJ2
Witch object would be attracted by a magnet?
Answer:
Any type of Ferromagnetic metals a quick and easy example is a nail made out of iron, where as a penny made out of zinc and copper both of them being non magnetic.
Explanation:
(PLSSS HEELP)Which landform is created by wind?
Delta
Desert gravel
Horns
Oxbow lake
Answer:
Desert gravel
Explanation:
A desert is an arid region where precipitation is very low all year round.
Wind action such as erosion, transportation and deposition is the most active denudation force in this sort of terrain.
Desert gravel is one of such feature pronounced in a desert area. They form by the gradual removal of the fines which are the sandy and clay sized particles. This now leaves the coarser particles behind. Desert gravel forms as a result of wind erosion.Answer: B
Explanation:
How does friction play a role in acceleration?
Answer:
Friction always acts in the direction opposing motion. This means if friction is present, it counteracts and cancels some of the force causing the motion (if the object is being accelerated). That means a reduced net force and a smaller acceleration. ... More friction and the puck slows to a stop faster.
Explanation: LET ME IF IM WRONG!!!!! HAVE A NICE DAYYYYYY
Identify the Lewis acid in this balanced equation:
Upper A g superscript plus, plus 2 upper N upper H subscript 3 right arrow upper A g (upper N upper H subscript 3) subscript 2 superscript plus.
Answer:
1
Explanation:
Ag+
From the given reaction, it is clear that, Ag is gaining electrons from the base NH₃ . Hence, according to Lewis concept of acids and bases, Ag⁺ is the Lewis acid.
What is Lewis concept of acids and bases ?There are various concepts to define acids and bases. Among which the first was Arrhenius theory. This theory states that, acids are substances which can furnish H+ in solution and bases are substances giving OH- in solution.
Then Bronsted- Lowry concept states acids as proton donor and bases as proton acceptors. The most applicable theory for acids and bases is Lewis concept.
According to Lewis theory of acids and bases, acids are electrons acceptors and bases are electron donors.
The given reaction is written as:
[tex]\rm Ag^{+} + 2NH_{3} \rightarrow Ag(NH_{3})_{2}[/tex]
Here, Ag⁺ is the Lewis acid which accepts an electron from the Lewis base NH₃.
Find more on Lewis acid and bases:
https://brainly.com/question/15570523
#SPJ3
why gold is called inert metal
Gold has a heavy enough nucleus that its electrons must travel at speeds nearing the speed of light to prevent them from falling into the nucleus. This relativistic effect applies to those orbitals that have appreciable density at the nucleus, such as s and p orbitals. These relativistic electrons gain mass and as a consequence, their orbits contract. As these s and (to some degree) p orbits are contracted, the other electrons in d and f orbitals are better screened from the nucleus and their orbitals actually expand.
Since the 6s orbital with one electron is contracted, this electron is more tightly bound to the nucleus and less available for bonding with other atoms. The 4f and 5d orbitals expand, but can't be involved in bond formation since they are completely filled. This is why gold is relatively unreactive.
Hope it helps
Gold is relatively inert metal because, the one valence electron in 6s orbital is not available for bonding since it is more attracted by nucleus. The 4f and 5d orbitals are completely filled and does not involve in bonding.
What is inertness ?Some elements tends to be unreactive compared to the other by their extra stability factors. This unreactness is called inertness. The 18th group elements are all inert since they are highly stable due to completely filled electronic configuration.
Gold is 79th element in periodic table. It is a transition metal located in d-block. The electronic configuration of gold is [Xe] 4f¹⁴ 5d¹⁰ 6s¹. There is only valence electron which is in the 6s orbital.
The 4s orbital experience more nuclear pull which leads to the unavailability of the valence electron. The 4f and 5d orbitals are completely filled and does not involve in chemical bonding. That's why gold is called inert metal.
Find more on gold:
https://brainly.com/question/11405288
#SPJ2
A barrel of crude oil was placed so that it was attached to a distillation tower. If the barrel were heated to a temperature of 250°C, it would still contain
Answer:
Explanation:
Distillation is a separation technique used to separate constituents of a mixture based on difference in there boiling points. Constituents of crude oil are also separated based on there boiling points. When the crude oil is heated above 250°C, diesel oil, gas oil, mineral oils, fuel oil, waxes and tars will be left in the mixture while constituents such as kerosene, fuel gas and petrol would have been separated/distilled out.
Which two is it brainliest and 100points:)
Answer:
b c
Explanation:
Answer:C
Explanation:
How do the alveoli in the lungs move oxygen and nutrients into the bloodstream? 1.Gravity 4.Time 2.Diffusion 5.Pressure 3.Magnetic force
Answer:
2.Diffusion
Explanation:
As we metabolize certain nutrients for the correct functioning of our cells, carbon dioxide is produced as a result. We need oxygen in order to metabolize them, so we need to have a system to incorporate it, and to eliminate the carbon dioxide produced.
This system is provided by the interaction between the respiratory system, which allows the enter of oxygen into the body and gets rid of the carbon dioxide, and the circulatory system, which acts transporting carbon dioxide and oxygen to and from the lungs, respectively.
The surface available for the gaseous exchange is enlarged by the pulmonary alveoli. The alveoli are the terminal aerial spaces of the respiratory system and the structures where the exchange between the air and blood is produced. Each alveolus is surrounded by a net of capillaries, where oxygen is freed from the hemoglobin and moves into the cells by diffusion. Carbon dioxide, diffuses out of the cells into the capillaries, where most of it dissolves in the plasma of the blood.
Q3: Fingers and hands pulling, pushing, pressing, or lifting are all examples of applying a
Is it friction gravity motion or force
Answer:
force
Explanation:
because the force
Which compound is a nonelectrolyte?
copper chloride
magnesium sulfate
carbon tetrachloride
sodium bromide
Answer:
copper chloride
Explanation: i googled it
WILL GIVE BRAINLIST IF RIGHT
While visiting Thor's Hammer in Bryce Canyon National park, you observe red coloring on the landform. What natural process most likely caused the red coloring? (4 points)
Chemical weathering
Deposition
Erosion
Mechanical weathering
Answer:
Chemical weathering because the landform changed color
Explanation:
Answer: A) Chemical Weathering
Explanation:
I took the test :)
The company's chief financial officer recognizes the need for an upgrade to the smart watches but does not understand why the budget you proposed requests more than the purchase price of the updated software. How would you respond to these concerns?
the extra money in the budget is for If a employees watch is broken or needs to be fixed we can give out temporary watch for few days until the watch is fixed.
plz give brainlest
A teacher wrote the following part of a balanced chemical equation: Cu+2AgNO 3 To show the conservation of matter in the chemical reaction , how many silver (Ag) atoms will be needed on the right-hand side of the balanced equation ?
