Answer:
Condenser
Explanation:
A condenser is laboratory apparatus used to condense vapors — that is, turn them into liquids — by cooling them down. Condensers are routinely used in laboratory operations such as distillation, reflux, and extraction(Wikipedia).
Condensers of of practical importance especially in synthetic organic chemistry and in separation science where vapours are often condensed and collected the substance is collected in pure form by distillation.
Plants respond to different kinds of stimuli. A plant's roots searching for water are an
example of what kind of response?
A. thigmotropism
B. phototropism
C. hydrotropism
D. gravitropism
Answer:
Explanation:
Hydrotropism
What temperature kelvin would .97mol of gas be to occupy 26L at 751.2mmHg?
Answer: 322.56 Kelvin
Explanation:
Use the Ideal Gas Law
[tex]PV=nRT[/tex]
R is the gas constant
T is the temperature in Kelvins
P is the pressure in atmospheres
V is the volume in liters
n is the number of moles of gas
First, the mm of mercury need to be converted to atmospheres using the conversion factor 1atm = 760 torr.
[tex]751.2mmHg (torr) =0.988atm[/tex]
Now plug everything in
[tex](0.988)(26)=(0.97)(0.0821)T\\T=322.56K[/tex]
how do i word a formal letter to a teacher saying i didn't pay attention during the science lessons and i now have no idea what to do? by the way, this is on edge so i haven't been on a call, or met my teacher in person.
Explanation:
Hello mr/mrs (name) I unfortunately couldn't pay attention to the class due to some issues I had therefore I don't know what we are doing in class
OR
Hello mr/mrs (name) I could understand what we were doing in class I would like it if you could break it down more or explain better to me
OR just say something it had something to do with your internet such as
Hello mr/mrs (name) I didn't understand what you were saying during our class due to some of my internet issues I was have throughout the day. I hope you can explain what we did during the class.
Those may be some of my excuses I've used before
they have worked for me:)
I don't know if that helped?:/
how many moles are in 5g of Na2CO3?
a) 0.047
b) 1
c) 2
d)21.2
Answer:
0.047
Explanation:
Data : 5g , Na2CO3
Formula:
Molecular mass of Na2Co3 = no.of atomic mass x no. of atom
moles = mass÷ molecular mass
molecular mass = 2(23)+1(12)+3(16)
=106amu
moles = 5÷106
= 0.047 Ans:
Which group in the food chain uses the energy of the sun to create its own food A consumers B predators C producers D prey
Answer:
C producers
Explanation:
All food chains start with energy from the sun. This energy is captured by plants. Thus the living part of a food chain always starts with plant life and ends with an animal. Plants are called producers because they are able to use light energy from the sun to produce food (sugar) from carbon dioxide and water.
Can somebody sort these from non-metals to metals?
Sonorous, low melting point, high density, brittle, dull, malleable, basic oxide
When elements bond, what is the part of the atom doing the bonding?
Answer:
the valance electrons
Explanation:
(e)
Calculate the mass of one atom of sodium.
Use the equation:
relative atomic mass
mass of one atom of sodium =
Avogadro constant
Avogadro constant = 6.02 x 1023
Give your answer to 2 significant figures
Answer:
3.82 × 10 ^-23 g
Explanation:
6.02 x 10^23atoms = 1 mole of sodium
1 atom = 1/(6.02 x 10^23) mole
mass = mole × molar mass
= 1/(6.02 x 10^23) × 23
= 3.82 × 10 ^-23 g
Which of the following is
NOT a part of the digestive
system?
A
Mouth
B Esophagus
C Intestines
D
Kidneys
1137 AM
o search
B
Answer:
Kidneys
Explanation:
I learned about it :)
Answer:
DkidneysExplanation:
I hope it helps
PLS HELPPPP OMG PLSPLSPLSPLSPLS
Answer:
D 44.8 L liters of hydrogen gas
Skill and
Serina is a ballet dancer. During her dance, she dances in a "Z" pattern on the stage. It takes her about 30 seconds to
complete the ®Z." The top and bottom of the "Z" are equal distances of about 3 meters each. The middle part of the "Z"
is about 6 meters long. How quickly (in meters per second) is she traveling during this part of the dance?
Answer:
2.5 m/s
Explanation:
total of 12 meters in 30 seconds
12x2.5=30
the spectral classes of four stars are shown in comparison with a Hertzsprung-Russell diagram. Based on the information which star is most like the sun?
Answer: star 3
Explanation: i did the test
Answer: star 3
Explanation:I did the test
please answer fast! Which of the following statements are false?
A: In a chemical change, atoms are rearranged to make new compounds.
B: The same element is present before and after a chemical change.
C: A physical change does not produce an entirely new substance.
D: A chemical property can be observed without changing the identity of the substance.
I believe it is C.
Hope this helps!
1. Which of the following
equalities is false?
A. 1 kilogram = 100 meters
B. 50 milliliters = 5 centiliters
C. 3 grams = 0.003 milligrams
D. 70 hectometers = 7,000 decimeters
Heeeeeellllppp, Iiiimmm sssooo stttuuuccckkk!
Answer:
I think it would be D. None of the above
Explanation:
why I think this is because none of the answers really adds up to it
I NEED HELP WIT QUESTION THREE
Answer: 2.00
Explanation:
2 rounded to the nearest hundredth is 2.00
your welcome :)
answers for all three:
1. 4.00
2. 16.04
3. 2.00
if a piece of aluminum has a density of 2.7g/cm^3. the mass of 5.2g,what is the volume
Answer:
Gold has a density of 19.3 grams per cubic centimeter, that is, 19.3 g/cm3 or 19.3 g cm-3. Aluminium has a density of 2.7 grams per cubic centimeter, that is, 2.7 g/cm3 or 2.7 g cm-3.
Explanation:
Answer:2.7 g cm-3.
Explanation:Gold has a density of 19.3 grams per cubic centimeter, that is, 19.3 g/cm3 or 19.3 g cm-3. Aluminium has a density of 2.7 grams per cubic centimeter, that is, 2.7 g/cm3 or 2.7 g cm-3.
There are 12 inches in 1 foot and 2.54cm in 1 inch. How many feet are in 325 cm?
Answer:
27.0833 feet
Explanation:
Name ways we use technology in inner and outer space
8th grade science btw
Answer:
Explanation:
Many common everyday services such as weather forecasting, remote sensing, satellite navigation systems, satellite television, and some long-distance communications systems critically rely on space infrastructure. ... Of the sciences, astronomy and Earth science benefit from space technology am in 6th grade btw
3) What are the three types of sedimentary rocks?
Answer:
clastic, organic, and chemical
What is the ratio of the effusion rate of the helium to methane? (round to hundreds)
Answer:
2.00
Explanation:
From Graham's law; the rate of effusion is inversely proportional to the square root of the relative molecular mass.
Let the rate of effusion of Helium be R1
Let the rate of effusion of Methane be R2
Let the molecular mass of Helium be M1
Let the molecular mass of Methane be M2
Hence;
R1/R2 = √M2/M1
R1/R2 = √16.0294/4.0026
R1/R2 = 2.00
Electrotonic configuration of potassium 19K ion equal the Electrotonic configuration of
1) ⁸0
2) ¹¹Na
3) ¹⁸Ar
4) ¹⁷C1
fill in the blank
______ is a way to describe matter with numbers and units.
Measurement is a way to describe matter with numbers and units.
Measurement is a fundamental process used to describe and quantify various aspects of matter. It involves assigning numerical values to physical quantities and expressing them using appropriate units of measurement.
In scientific and everyday contexts, measurements provide a standardized and consistent way to communicate information about the properties, dimensions, quantities, and characteristics of objects, substances, or phenomena. By using measurements, we can describe the size, length, mass, volume, temperature, time, and many other attributes of matter.
The process of measurement typically involves two components: a numerical value and a unit. The numerical value represents the magnitude or quantity being measured, while the unit provides the reference or scale by which that quantity is expressed. Units help provide meaning, context, and comparability to measurements.
Hence, measurement provides a quantitative and objective way to describe matter, allowing us to understand and interact with the physical world in a systematic and meaningful manner.
Learn more about matter here:
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PLEASE HURRY IM TIMED Atoms are made up of electrons, neutrons, and____?
protons
compounds
mixtures
water
Answer: protons
Explanation:
A. Protons I learned this in class
4. Which chemical formula below contains 2
different elements?
A. CO
B. Fe2O3
C. C2H4
D. All of the above
The chemical formula of CO, Fe₂O₃, and C₂H₄ contain atoms of two different elements. Therefore, option (D) is correct.
What is the chemical formula?A chemical formula provides information about the chemical proportions of atoms of each element that are present in a molecule or chemical compound. The chemical formula can be represented by using chemical symbols of elements, numbers (subscripts), and other symbols, such as commas, dashes, brackets, and plus (+) and minus (−) signs.
A chemical formula of a compound has no words but can be written in certain simple chemical structures. Chemical formulae can be more limited in power than chemical names and structural formulae. There are two kinds of chemical formulas in which one empirical formula and another molecular formula.
In the chemical formula of carbon monoxide (CO) has carbon and oxygen two different elements. In the chemical formula of iron oxide (Fe₂O₃) iron and oxygen are two different elements. In the chemical formula of ethane (C₂H₄ ) has carbon and hydrogen two different elements.
Learn more about chemical formula, here:
brainly.com/question/11140581
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!! brainliest answer !! please help it's due tonight :)
Answer:
3. D
28. also known as Freon 12
Explanation:
Glycerine is viscous than water?why
Answer:
Yes
Explanation:
Why is glycerol more viscous than water?
The glycerine is more viscous than water because due to presence of hydrogen atoms , we all know that glycerine has more hydrogen bonding than water molecule , which makes an aggregation which means that glycerine is more viscous than water , in simple words glycerine can't flow as that of water molecule.
When a comet enters the solar system, it curves toward the sun. Which statement describes why the sun does not move when a comet is nearby?
Answer:
Explanation:
When a comet enters the solar system it curves towards the Sun due to the Sun's gravitational pull. Every celestial object in the universe has a gravitational pull whose force is dependent on the object's mass. The larger the object is the more gravitational pull it will have. The Sun is the largest object in our Solar system and therefore has the most gravitational pull. This is why the comet curves toward the Sun, but the opposite does not happen because the comet's gravitational pull is not strong enough to pull the Sun.
What does the word photosynthesis mean?
PIC IS BELOW!
How many moles of nitrogen are in 1 mole of Al(NO3)3?
O A. 4 moles of nitrogen
O B. 1 mole of nitrogen
C. 3 moles of nitrogen
O D. 7 moles of nitrogen
Answer:
c i think
Explanation: