Answers
For a molecule AB, for every 1g of A, you will have 1.14g of B.
For a molecule AB2, for every 1g of A, you will have 2.28g of B.
For a molecule A2B3, for every 1g of A, you will have (1.14x3/2) 1.71g of B.
Related Questions
Question
What is the name of the covalent compound with the formula P2N3?
Answers
Answer:
P2N5
Explanation:
you have to plus it 2 times
Put the following in order from largest to smallest.
Chromosome, gene, nucleus, cell, DNA
Answers
Answer:
cell, nucleus , chromosome, DNA, gene
Hello Friends Can Yall Plz Help Me For Brainliest Don’t Comments No B.S Yu Will Get Cursed out show ya work
Answers
Answer:
it is b
Explanation:
mid ocean ridge diverges meaning it moving in two different direction horizontally - left to right
The atmosphere is primarily made of what gas?
Carbon Dioxide
Nitrogen
Oxygen
Argon
Answers
Answer:
nitrogen
Explanation:
In a heat engine, 500 J of heat enters the system, and the piston does 300 J of work. What is the final internal (thermal) energy of the system if the initial energy is 1500 J?
200 J
800 J
1300 J
1700 J
Answers
Answer:
200J
Explanation:
This is because 500J - 300J = 200J
I hope this helps!!!
Answer:
1700 Joules. I Took the test.
Explanation:
Question 19 (3 points)
If the density of the earth was 11.0 g/mL instead of its measured value of 5.51 g/mL, the force of gravity would
be twice what it is at sea level. If the earth's density was twice than its actual density, then in pounds per
square inch at sea level the earth's atmosphere in British units would be equal to:
a) 7.35 psi b) 14.7 psi c ) 29.4 psi d) 44.1 psl e) 98.8 psi
Answers
Answer:
c ) 29.4 psi
Explanation:
If the density of earth was twice than its actual density which is 5.51 g/mL, then at sea level the atmospheric pressure of earth in British units would be equal to 29.4 psi because increase of gravity, increase occurs in the atmospheric pressure. If we double the gravity of earth by double of the earth density, so the weight of that same mass of air will be double which leads to the doubling of the atmospheric pressure at the sea level.
A boy is skating down the street, hits a curb, and files off the board. Why did this happened? Can y’all plz help me it’s due today!
Answers
Answer:
to much sause
Explanation:
Are these ramen noodles expired?
Answers
Answer:
i think so
Explanation:
just eat them anyways
Answer: Yes they are
Explanation: Where's the picture?
Define respiration in plants:
Define Transpiration in plants:
( Can’t be short has to at least be long or medium sized )
Answers
Answer:
Respiration in plants: The process of respiration in plants involves using the sugars produced during photosynthesis plus oxygen to produce energy for plant growth. In many ways, respiration is the opposite of photosynthesis. ... As with photosynthesis, plants get oxygen from the air through the stomata.
Transpiration in plants: The water eventually is released to the atmosphere as vapour via the plant's stomata — tiny, closeable, pore-like structures on the surfaces of leaves. Overall, this uptake of water at the roots, transport of water through plant tissues, and release of vapour by leaves is known as transpiration.
Sources (jic)
https://www.usgs.gov/special-topic/water-science-school/science/evapotranspiration-and-water-cycle
https://www.pthorticulture.com/en/training-center/basics-of-plant-respiration/
Good luck!!
2.Transpiration is the process of water movement through a plant and its evaporation from aerial parts.
Waves made by the breeze were very different than wave created by speedboat. describe the difference
Answers
Answer:
The amplitude of the speedboat waves were larger then the Breeze waves. The frequency of the speedboats waves were lower than the breeze waves. the speedboat waves had more of an effect on the boat, which tells us the speedboat waves had more energy.
Explanation:
plz can i get brainliest:)
Answer:
speedboat waves artificail and waves by breezes natural
Explanation:
A lake has been infected by some type of new algae that is unknown. Every single day the amount of surface area that the algae takes up doubles. Day 1 has a certain amount, day 2 it is 2x that amount. It takes 87 days for the entire lake to be overrun by this new algae. How many days does it take to cover half of the lake? Show your work and explain your thinking. In science we need to be able to justify our answers.
hint: It is not the "obvious" answer.
Answers
Answer:
It takes 86 days take to cover half of the lake
Explanation:
In the day #1, the amount of the algae is X,
In the day #2 is 2X
In the day #3 is 2*2*X = X*2²
...
In the day #n the amount of the algae is X*2^(n-1)
Assuming X = 1m³. In the day 87, the area infected was:
1m³*2^(87-1)
7.74x10²⁵m³ is the total area of the lake
the half of this amount is 3.87x10²⁵m³
The time transcurred is:
3.87x10²⁵m³ = 1m³*2^(n-1)
Multiplying for 5 in each side:
ln (3.87x10²⁵) = ln (2^(n-1))
58.9175 = n-1 * 0.6931
85 = n-1
86 = n
It takes 86 days take to cover half of the lakeA piece of metal of mass 23 g at 100 ◦C is
placed in a calorimeter containing 55.4 g of
water at 25◦C. The final temperature of the
mixture is 63.4
◦C. What is the specific heat
capacity of the metal? Assume that there is
no energy lost to the surroundings.
Answer in units of J
g ·
◦ C
.
Answers
Answer:
10.58 J/g-°C
Explanation:
To find the specific heat capacity of the metal, you need to know how much heat was lost when it reacted with water.
You know that there are 55.4 g of water, the initial temp. of water is 25°C, and the final temp. (the mixture's temp.) is 63.4°C.
You should also know that the specific heat capacity of water is 4.186 J/g-°C.
Plug this into the equation the q=mcΔT.
q = (55.4 g)(4.186 J/g-°C)(63.4°C - 25°C)
q = 8905.12896 J
If 8905.12896 J was gained by the water, then 8905.12896 J must have been lost from the metal.
You know that there are 23 g of the metal and that its initial temp. is 100°C.
Plug this information into q=mcΔT.
8905.12896 J = (23 g)(C)(63.4°C - 100°C)
C = 10.58 J/g-°C
*When you plug all of this into the calculator, it will result in a negative number but keep in mind that heat was LOST by the metal so 8905.12896 J is essentially negative. So the negative cancels out.*
What would be the most effective way for a scientist to get an idea of the actual age of a rock?
Answers
Answer:
Radiometric dating
Explanation:
Radiometric dating would be the most effective way since it is a technique that can establish the age of objects older than a few thousand years.
HELPHELPHELPHELPHELPHELPHELP
Answers
Answer:
C
Explanation:
increasing T (knowledge of direct proportion and Inverse proportion)
how many moles is 62 G of oxygen gas
Answers
Answer:
There are 2 moles of oxygen molecules; there are 4 moles of oxygen atoms.
Explanation:
Explain how scientists study the Earth’s interior. PLEASE HELP :))))!
Answers
Answer:
Scientists study Earth's interior by studying
seismic waves. Seismic waves are waves of energy that travel
through Earth.
Explanation:
Which of the following statements is not true? a. Water is polar. b. Water stabilizes temperature. c. Water is essential for life. d. Water is the most abundant atom in Earth’s atmosphere.
Answers
Answer: d. Water is the most abundant atom in Earth’s atmosphere.
Explanation:
Water percentage in the atmosphere is 0.001 percent only as it not the major reservoir or source of water. The water is available in the atmosphere in the form of water vapors. These water vapors when aggregate and their concentration becomes high they fall down as rain on earth so the rain is collected in water reservoirs like oceans, rivers, lakes, ponds, aquifers, and other sources of water, which are the components of hydrosphere on earth. So, hydrosphere is most abundant in water. Moreover, water is not an atom instead it is the molecule formed by the combination of two molecules of hydrogen and one molecule of oxygen.
120.0 g of 4.0°C water (Specific Heat: 4.184J/g°C) is heated until its temperature is 35°C. Calculate the amount of heat energy needed to cause this rise in temperature?
Answers
Answer: I got 15.56
Explanation: I am so sorry if that's wrong but I used the equation Q=m×c×ΔT where
m=mass
ΔT= temp change that occurs
c= specific heat capacity
good luck, again sorry if i totally biffed that
This type of fungi is used to make bread as it converts sugar into carbon dioxide, causing the bread dough to rise.
baking soda
yeast
mold
cyanobacteria
Answers
Answer: Ik its too late but the answer is yeast.
Explanation: Sugar is yeasts food. If you mix sugar with yeast, and put it in something such as bread, a bottle with a balloon over it, or etc. It will cause it to rise.
An unknown piece of metal absorbs 1350 J of heat as 55.0 g of the metal heats up from 20.0 oC to 47.0 oC
Answers
Answer:
[tex]C=0.91\frac{J}{g\°C}[/tex]
Explanation:
Hello there!
In this case, according to the given information, it is possible to recall the equation to calculate the heat, Q, in these calorimetry problems as shown below:
[tex]Q=mC(T_f-T_i)[/tex]
Thus, given the absorbed heat, mass and temperatures, we can easily calculate the specific heat of the metal as shown below:
[tex]C=\frac{Q}{m(T_f-T_i)}[/tex]
Then, by plugging in we obtain:
[tex]C=\frac{1350J}{55.0g(47.0\°C-20.0\°C)} \\\\C=0.91\frac{J}{g\°C}[/tex]
Best regards!
HCl (aq) + NaOH (aq) = NaCl (aq) + H2O (l)
What type of reaction is the above?
Answers
Answer:
Neutralization reaction
Explanation:
It is a reaction between an acid and a base
When the medium is uniform, how do light waves travel through it?
a. vibrating motion
b. circular motion
c. irregular motion
d. straight line motion
Answers
Answer:
d.straight line motion
Answer:
d.) straight line motion
Explanation:
i just took the k12 test
I need help please!!
Answers
Answer:
BECAUSE OF DENSITY
Explanation:
Answer:
It's DENSITY
Explanation:
YOURE WELCOME
NEED HELP ASAP
You need to prepare a 100. mL of a 0.050M solution of CaCl2. How many grams of CaCl2 are needed?
Answers
Answer:
9.
Explanation:
.
My teacher didn’t explain this. Please Help Me!!
Due to their low melting points nitrogen oxygen and helium are examples of which type of matter when at room
temperatures?
A. Gas
B.liquid
C.Plasma
D. Solid
Answers
Oxygen is a gas at room temperature
what is the most sold candy in America?
Answers
Explanation:
M&M's.
Reese's Peanut Butter Cups.
Hershey Bar.
Snickers.
Kit Kat.
Twix.
Twizzlers.
Skittles.
30g of Aluminum at 80°c is added to 30g of water at 10°c . Predict
the final temperature of the water
Answers
Answer:
the explanation of this 20
Explanation:
20 c
You have a hydrate of compound X that is 60.26g. You heat the hydrate, allow it to cool, and then remass it. The new mass is 23.0g. The molar mass of compound X as an anhydrate is 100 g/mol.
Answers
Answer:
100gmol
Explanation:
Which of the following is a FALSE statement? *
A. Heat moves through solids by by conduction.
B. Molecules move faster in warmer substances.
C. Warm water is denser than cold water.
D. Heat moves through liquids and gases by convection.
Answers
Answer:
C: Warm water is denser than cold water
Please help with ALL!
Answers
Answer:
A. Particle emitted = alpha particle; Protons lost = 2; Change in mass = -4
B. Particle emitted = alpha particle; Protons lost = 2; Change in mass = -4
C. Particle emitted = beta particles; protons gained = 1; Change in mass = 0
D. Particle emitted = alpha particle; Protons lost = 2; Change in mass = -4
E. Particle emitted = gamma ray; protons gained = 0; Change in mass = 0
F. Particle emitted = alpha particle; Protons lost = 2; Change in mass = -4
Explanation:
Radioactivity is the spontaneous disintegration of nucleus of an atom resulting in emission of particles and radiation unyil a stable atomic nuclei is obtained. Substances that are exhibit radioactivity are known as radioactive substances and are usually isotopes of stable atoms.
The types of radiation emitted by a radioactive substances include alpha rays, beta rays, and gamma rays.
Alpha rays or particles are fast moving positively charged particles with a mass number of four and atomic number of two. Thus, each alpha particle is a helium nucleus.
Beta rays or particles are vary fast moving stream of electrons having a mass number of zero and a charge of -1.
Gamma rays are not particles but are electromagnetic waves similar to visible light and X-rays but with shorter wavelengths. They have no mass or charge.
An atom emitting alpha particles has its mass reducing by 4 units and its atomic number decreasing by 2.
An atom emitting beta particles as it decays has no change in mass but its atomic number increases by 1.
From the table:
A. Particle emitted = alpha particle; Protons lost = 2; Change in mass = -4
B. Particle emitted = alpha particle; Protons lost = 2; Change in mass = -4
C. Particle emitted = beta particles; protons gained = 1; Change in mass = 0
D. Particle emitted = alpha particle; Protons lost = 2; Change in mass = -4
E. Particle emitted = gamma ray; protons gained = 0; Change in mass = 0
F. Particle emitted = alpha particle; Protons lost = 2; Change in mass = -4