Answer:
Explanation:
Understand that a substance's specific heat (C) is a property that can be used to ... Calculate the heat required to melt 25.7 g of solid methanol at its melting point. ... How many moles of NH4NO3 must be dissolved in water so that 88.0 kJ of heat ... to vaporize 54.0 g of ethanol (C2H5OH) if AHvap for ethanol = 43.5. kJ/mol?
Determine the ions of ammonium, in 870.4x10-23 grams of (NH4)3PO4. Round the results to the tenths.
Answer: if your trying to say what 4x10-23 is the answer is 17
and if ur also trying to say whats 870.4x10-23 the answer is 8681 have a nice day!
Explanation:
also and what is (NH4)3PO4 if its a file code or link your not allowed to post that
a ceiling fan's blades collect dust faster than other objects in a room. the constant pushing and rubbing against the air provide a cool breeze for the people in the room. what causes the ceiling fan´s blade to collect dust so quickly.
As the blades rotate, they experience frictional forces as they `rub' against the air; this knocks electrons around, causing the blades to build up a net charge. The charged dust particles then stick to the charged areas of the blades. "The leading edge of the blades usually develops the thickest layer of dust.
To solve this we must be knowing each and every concept related to dust. Therefore, frictional forces allow the ceiling fan´s blade to collect dust so quickly.
What is dust?Dust stirred up by automobiles on the road may account for 33% overall air pollution. Deposits of vehicle or commercial exhaust gas, particles through tire and braking wear, dust from paved streets or potholes, plus dust from building sites all contribute to road dust.
As the blades revolve, frictional forces cause them to 'rub' against the air, knocking electrons around and allowing the blades to accumulate a net charge. The electrified dust particles are subsequently attracted to the charged portions of the blades. Typically, the sharp end of the blades creates the heaviest coating of dust.
Therefore, frictional forces allow the ceiling fan´s blade to collect dust so quickly.
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Explain what happens when salt used for snow causes metallic parts of a car to corrode. What is the process called?
Answer:
Why does a car rust from road salt? Metal parts of a car come in contact with precipitation water containing carbon dioxide and oxygen. Road salt contains free-radical ions and they come into contact with the precipitation water. After extended exposure to oxygen, iron oxide forms, which speeds up the rusting process.
Explanation:
CAN SOMEONE HELP ASAP!!
Answer:
1.melting
2.freezing
3.
Explanation:
That's all I got sorry
Answer:
Look at the picture
Explanation:
Se tiene un litronde solucion de agua con alcohol con una consentracion del 4.5% v/v ¿Cuanto alcohol se tiene en la solución
Answer:
45 mL
Explanation:
Tenemos los siguientes datos:
V = 1 L
C = 4,5% v/v
El porcentaje en volumen (%v/v) expresa el volumen de soluto (alcohol en este caso) que hay cada 100 mL de solución. Si la solución tiene una concentración del 4,5% v/v eso quiere decir que hay 4,5 ml de alcohol cada 100 ml de solución, de acuerdo a lo siguiente:
4,5% v/v alcohol = volumen alcohol/ volumen solución x 100 = 4,5 mL alcohol/100 mL solución= 4,5 mL alcohol/0,1 L alcohol
Por lo tanto, al multiplicar por el volumen total de la solución (1 L), obtenemos la cantidad total de alcohol:
4,5 mL alcohol/0,1 L alcohol x 1 L = 45 mL
11. A chemical reaction happens when chemicals combine to form a new _______
Answer:
substances
Explanation:
A chemical reaction happens when substances break apart or combine to form one or more new substances.
^Hope it helps, Hazel^
can you guys help me :) ?
winner takes all
Answer:
1. Ag2CO3
2.Ba3(PO4)2
3. Cu(OH)2
4. AL
Explanation:
Consider the table below that summarizes the types of materials that can block the 3 different types of radiation. Based on the table, at which numbered spot in the table does each type of radiation belong. 1 = beta; 2 = alpha, 3 = gamma
Answer:
D. 1 = gamma; 2 = alpha, 3 = beta
Explanation:
I apologize if this answer is late, but I got answered the question right on my "Types of Radioactive Decay" quiz :)
Hope this is helpful for others! :D
Based on the table, the type of radiation belong from 1 is the gamma rays, from 2 is the aplha rays and from 3 is the beta rays.
What are radiations?During the radioactive decay process, some amount of energy is released in the form of particles and that radiations will known as alpha rays, beta rays and gamma rays.
Gamma ray are mare energetic rays and will shielded by only lead and thick concrete materials.Beta rays are less energetic than gamma rays and will shielded by lead, cloth, paper, wood, aluminium foil and thick concrete materials.Aplha rays have very less amount of energy in it and it will be shielded by all above mention materials.Hence 1 is the gamma rays, 2 is the aplha rays and 3 is the beta rays.
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I need help with this please
Answer: the place that i put the letters is how it should look also 75% of your peas are green
Explanation:
Using an analogy of a water balloon, describe the function of the bladder.
Answer:
A bladder is like a balloon, because it holds urine, just like a balloon holds air. The urethra's function is to excrete urine from the human body.
Explanation:
A bladder and a balloon are similar, because it is the bladder which clasp urine, whereas a balloon clench air. The role of urethra is to eliminate urine from our human body.
What is bladder?The hollow organ which is in triangle shape and found in the lower abdomen just like a balloon is defined as the bladder. The urinary bladder is also known as a temporary reservoir of urine. Urine is reserved in the urinary bladder till it is removed out through the urethra.
As a result of the contraction of the wall of the urinary bladder, urine is eliminated from the body from time to time. The urine contains waste and extra fluid left over the body which has to be eliminated.
The bladder resembles the water balloon in that it holds urine in the similar way as the water balloon clench water. The water balloon pops when the amount of water exceeds than it can hold.
Thus the function of bladder and water balloon are found to be same.
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I know the answer out here are points for you! It’s 3 if anyone needs the answer !
Answer:
lol thanks for the 10
Explanation:
Under what conditions is a real gas closely approximated by an ideal gas?
zinc + hydrogen arsenate—>
What type of reaction is this? (Synthesis, Decomposition, or Single Replacement?
Answer:
Single Replacement
Explanation:
im just smart lol
bismuth (V) nitrate + strontium hydroxide
Answer: [tex]2Bi(NO_3)_5(aq)+5Sr(OH)_2(aq)\rightarrow 2Bi(OH)_5(s)+5Sr(NO_3)_2(aq)[/tex]
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
A double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.
The balanced chemical equation is:
[tex]2Bi(NO_3)_5(aq)+5Sr(OH)_2(aq)\rightarrow 2Bi(OH)_5(s)+5Sr(NO_3)_2(aq)[/tex]
1) Calcula la masa molecular para las siguientes sustancias
f) Mg3(PO4)2
g) Cu(NO2)3
h) C5H12
i) (NH4)4 As2O7
j) I2O7
2)Halla la composición porcentual de cada una de las siguientes sustancias
- H3PO4
• HIO3
• H2C2O4
• C3H6O3
• NH3
• KBr
Porfavor es para mañana mismo
what ive learned about heat,sound and light
Answer:
they are all in parts of our life and we need them each for surviving.
Explanation:
What are the three components of a circuit
Yup I’m a kid-
Answer:
it's B(Energy source,conductor and receiver)
Help with this question!!!
Answer:
diple doble
Explanation:
The songs of birds are part of a ritual to attractpotential partners of their own species. The song presents specific patterns recognized only by membersof the same species. What advantage does this present for the species of birds?
Answer:
Explanation:
Bird courtship and mating dances include many unique ways to attract mates. Learn about their courtship behaviors and why they matter. ... When birders recognize courting birds, they can be sure to avoid disturbing ... the charming songs used to woo partners can help distinguish species so birds are sure ...
Can I have someone to talk to it’s really important and I need advice..
Answer:
go for it
Explanation:
Answer:
I would be happy to help
Explanation:
Lab: Titration Assignment: Lab Report
I need the answer to the graph on the last page.
Answer:
There is none
Explanation:
Answer: I've attached my lab report for anyone who needs it. Hope this helps! (I didn't know what to put for some of the answers on the graph, but I've filled it out for the most part)
What gas in the air is used by plants to make their own food? (2 points)
Nitrogen
Water vapor
Carbon dioxide
Oxygen
Answer:
Carbon Dioxide
Explanation:
Carbon dioxide gets turned into oxygen
PLZ HELP!
Where have you seen or known of examples of waves in your life? Based on science terms of a wave.
Answer:
I answered this in your recent post of this question.
Explanation:
Hope that this helps you out! :)
If you have any questions please put them in the comment section below this answer.
Have a great rest of your day/night!
Please thank me on my profile if this answer has helped you.
How many grams of carbon are found in
3.50 atoms of carbon?
Answer:
140
Explanation:
there is 140 grams in 3.5 atoms of carbon
A solution contains 23 ppm of dissolved oxygen in 242.0066 ml of solution. What is the mass of oxygen?
Answer:
Mass of Oxygen is equal to 0.005566 grams
Explanation:
As we know,
ppm=(grams of solute/grams of solution)*1,000,000
Substituting the given values, we get -
23 ppm = (grams of solute/242.0066 grams)*1,000,000
1 ml = 1 gram
On solving the above equation, we get -
grams of solute = (23 * 242.0066)/1,000,000
= 0.005566 grams
Mass of Oxygen is equal to 0.005566 grams
PLEASE HELP I SCORED A 20%
What is the function of the outer covering of a plant?
A plant's outer covering is involved in reproduction.
A plant's outer covering helps reduce water loss.
A plant's outer covering is for preying on other plants.
A plant does not have an outer covering.
Answer:b
Explanation:
The function of the outer covering of a plant is to help reduce water loss, option B. The outer covering of a plant is known as the epidermis, and it serves as a protective layer that helps to prevent excessive water loss through transpiration.
What is plant's epidermis ?The epidermis may contain specialized structures such as stomata and trichomes, which further regulate water loss and protect the plant from environmental stresses such as insect predation and UV radiation.
Option A, "A plant's outer covering is involved in reproduction," is incorrect because the reproductive structures of plants are typically located within the plant's interior, not on the outer surface.
Option C, "A plant's outer covering is for preying on other plants," is incorrect because plants are not capable of actively preying on other plants.
Option D, "A plant does not have an outer covering," is incorrect because all plants have an outer covering in the form of the epidermis or a similar structure.
Hence, option B is correct.
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Which pair of elements is in the same period? (Check ALL that apply) *
17 points
G
F
D
R
J
Answer:
D and R are in the same period
Explanation:
remember groups are vertical and periods are horizontal!
In the word, thermohaline, thermo means _________ and haline means_____________
Answer:
Thermo means heat/related to heat and haline means salty/of salt
25.5g C7H11NO7S in 1.00x 10^2g H20 what is the boiling and freezing point
Q. Explain why magnesium
oxide has a much higher
melting point than
sodium chloride.
If you answer this correctly ill mark you as brainliest.
Answer:
Why does Magnesium Oxide have a higher melting point than Sodium Chloride? ... As the charge in the ionic lattice in Magnesium Oxide is two times as large, the ionic bonding is stronger so more energy is required to overcome the electrostatic attraction and break down the ionic lattice.
HI thts way tooo much to answer but ye.
