Answer: waning gibbous
Explanation:
You mix two amino acids together: glu and ser. If they reacted, how many different dipeptides would you expect to get? List them.
I'm really struggling with amino acids, so any help is appreciated! I won't be clicking any links, though.
Answer:
Answers 1. An amide linkage between the carboxyl group of one amino acid and the amine group of the other amino acid. 2. An ester is a compound formed from the reaction of a carboxylic acid and an alcohol. ( I apologise, I cant figure out number 3.. )
Can someone please help!!??! I will mark the
brainliest to the best answer!
(25 points!)
The volume of a gas at 4.50 atm is 1.90 L, if the pressure of the gas is increased to 6.70 atm, what is the new
volume? In this problem, V2 =
tje new preasure is 10.7l
How many moles of Manganese there in are 5.76 x 10(15) atoms of Mn?
How many moles of sodium chloride are in a 431.6 g sample of NaCl?
Answer:
1. 9.57 × 10^-9 moles.
2. 7.38mol
Explanation:
1.) To find the number of moles there are in the number of particles in an atom, we divide the number of particles (nA) by Avagadro's constant (6.02 × 10^23)
Hence, to find the number of moles (n) of Manganese (Mn), we say:
5.76 x 10^15 atoms ÷ 6.02 × 10^23
5.76/6.02 × 10^(15-23)
= 0.957 × 10^-8
= 9.57 × 10^-9 moles.
2.) Mole = mass/molar mass
Molar mass of sodium chloride (NaCl) = 23 + 35.5
= 58.5g/mol
mole = 431.6 g ÷ 58.5g/mol
mole = 7.38mol
PLEASE HELP PLEASE!!ASAP!
Answer:
The mass of oxygen will be 19.53g
25) In a certain area where there are many farms, the groundwater levels have dropped by as much as 10 m over a period of 30 years. The main cause behind this is MOST LIKELY
A) the evaporation of water from aquifers.
B) the excessive pumping of water through wells.
C) the leakage of fertilizers from the farms into the aquifer.
D) the construction of a dam to divert water into a reservoir.
NO LINKS!!!
I will give Brainliest to 1st right answer!
Answer:
I a, answering so the other dude can get brainily oh and yeah its b
Explanation:
The excessive pumping of water through well is the major reason for the drop of ground water level. The nearby farms over use water and pumps from undergrounds.
What is underground water?Water beneath the earth surface is called ground water. The storage of ground water is a very important in all areas to sustain our need for water and it must be maintained pure without the presence of overdose of heavy metals and other impurities.
Reduction in the level of ground water storage is a serious issue that might leads to a scenario where the drinking water is not sufficient. The uncontrolled use of pump water by factories, industries and farms results in the drop of ground water level.
The nearby farms might pumping water from sources uncontrollably in the area. That is the main reason of dropping in ground water level. Hence, option B is correct.
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A graph of gas pressure versus the number of particles in a container is a straight line. Which other relationship will have a similar graph? volume versus pressure, because they are also directly proportional volume versus temperature, because they are also directly proportional volume versus pressure, because they are also inversely proportional volume versus temperature, because they are also inversely proportional
Answer:
b
Explanation:
gitcy is good for your spleen
The other relationship that will have a similar graph is volume versus temperature, because they are also directly proportional according to Charles's Law.
What is Charles's Law?Charles's Law is a gas law that states that the volume of a fixed mass of gas at a constant pressure is directly proportional to its absolute temperature.
This means that as the temperature of a gas increases, the volume of the gas will also increase proportionally, and as the temperature of a gas decreases, the volume of the gas will decrease proportionally.
Therefore, if a graph of gas pressure versus the number of particles in a container is a straight line, a graph of volume versus temperature will have a similar shape and be directly proportional, because they are both affected by changes in temperature.
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100 pointts pls answer quick and no link :In the reaction, Hydrogen + Iodine --> Hydrogen Iodide at equilibrium, some Iodine is is added. What happens to the equilibrium?
Answer:
the concentration of hydrogen iodide will be higher than it was in the original equilibrium conditions.
UNA ONDA SE MUEVE CON UNA FRECUENCIA DE 2 (HZ), Y SU RAPIDEZ DE PROPAGACIÓN ES DE 20 (m/s). ¿Cuál ES LA LONGITUD DE ONDA.
What volume in liters will 50.0g CO occupy? please show work.
Answer:
40.0L is the volume the CO occupy
Explanation:
To solve this question we must assume the gas is at STP. To find the volume of a gas using the moles, temperature and pressure of the gas we have to use:
PV = nRT
V = nRT / P
Where V is volume in liters
n are moles of the gas -Molar mass CO: 28g/mol-
50.0g * (1mol / 28g) = 1.786 moles CO
R is gas constant = 0.082atmL/molK
T is absolute temperature = 273.15K at STP
P is pressure = 1atm at STP
Replacing:
V = 1.786moles*0.082atmL/molK*273.15K / 1atm
V = 40.0L is the volume the CO occupy
PS.
13. Calculate the number of representative particles of each substance.
a. 11.5 mol Ag
c. 0.150 mol NaCl
b. 18.0 mol H2O
d. 1.35 x 10-2 mol CH4
The amount of radioactive carbon-14 in a sample is measured using a Geiger counter, which records each disintegration of an atom. Living tissue disintegrates at a rate of about 13.5 atoms per minute per gram of carbon. In 1977 a charcoal fragment found at Stonehenge, England, recorded 8.2 disintegrations per minute per gram of carbon. Assuming that the half-life of carbon14 is 5730 years and that the charcoal was formed during the building of the site, estimate the date when Stonehenge was built
Answer:
4121 years
Explanation:
From;
0.693/t1/2 = 2.303/t log No/N
t1/2= half life of the carbon-14
No= count rate of the living tissue
N= count rate of the sample
t = age of the sample
0.693/5730 =2.303/t log (13.5/8.2)
1.21 * 10^-4 = 2.303/t * 0.2165
1.21 * 10^-4 = 0.4986/t
t = 0.4986/1.21 * 10^-4
t = 4121 years
In this activity, you will be observing a reaction where copper and silver nitrate react to form copper (II) nitrate and silver.
What are the products of this reaction?
Answer:
Copper(II) nitrate and silver
Explanation:
2AgNO₃(aq ) + Cu (s) --> Cu(NO₃)₂(aq ) + 2Ag(s)
This can be called a redox reaction because silver nitrate is reduced and copper is oxidized. This can also be called a single replacement reaction because copper replaces silver in the substance silver nitrate.
What did you know for sure after one Test? Two tests? Three tests?
Answer:
I knew that I learned something and passed that test. And that is all I want to do.
Explanation:
Answer:
vaiana and I have been working with our team since we been through
1: Scrieţi şi egalaţi ecuaţiile reacţiilor chimice de schimb prezentate mai jos: a) carbonat de sodiu + clorură de calciu = b) carbonat de potasiu + azotat de calciu = c) sulfat de sodiu + clorură de bariu = d) clorură de aluminiu + hidroxid de sodiu = e) sulfat de magneziu + clorură de bariu = 2: Determinaţi compoziţia procentuală a substanţei sulfat de aluminiu; calculaţi numărul de ioni Al 3+ existenţi în 3,5 Kmoli sulfat de aluminiu. 3: Acidul fluorhidric nu se poate păstra în vase de sticlă (SiO 2 ),deoarece reacţionează cu acesta: 2 SiO 2 + 4HF = SiF 4 + 2H 2 O Ştiind că sticla are un conţinut de 75,3% SiO 2, calculaţi numărul de moli, respectiv numărul de molecule de HF ce reacţionează cu 500 g sticlă. 4: Determinaţi masa de Al, respectiv de K din 500g alaun KAl(SO 4 ) 2 x 12H 2 O 5: Calculaţi cantitatea de azotat de calciu care reacţionează cu 500g soluţie carbonat de potasiu de puritate 80%. 6: Calculaţi masa de H 3 PO 4 care conţine 1,05 x 10 20 atomi oxigen.
Answer:
AMBANTOT MO MALIGO KANA
hello guys,
differentiate between vapourisation and evaporation
Answer:
vapourisation can occur from solid or liquid into a gas but evaporation is straight from a liquid and is often below boiling temperature while vapourisation is often above boiling temperature
Answer:
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Differences between Vaporization & Evaporation:-[tex]{\huge\pink{\fbox{{࿐αɴѕωєя࿐}}}}[/tex]
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It is defined as the transitional phase of a compound or an element at the boiling temperature.It changes the state of matter from a solid or liquid to a gas.It is generally happening at a fast pace and also it needs less amount of energy.During the vaporization process, all of the water turns into a gas.During vaporization, molecules may come from below the surface of liquid also.[tex] \huge\orange{ \mid{ \underline{ \overline{ \tt EVAPORATION:}} \mid}}[/tex]
It is nothing but a special kind of vaporization and mostly occurring at the temperature below the boiling point.It changes the liquid state of the matter directly into a gas.It is generally a slower process that needs more energy.During the evaporation process, only the top level of water turn into gas.During evaporation, molecules vaporize from the surface of liquid only.➳ ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
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m
Which two types of energy are formed by the transformation shown in the
photo?
O A. Chemical energy - thermal energy
B. Thermal energy - electrical energy
C. Thermal energy - chemical energy
D. Chemical energy - electromagnetic energy
Answer:
D
Explanation:
Hope it helps
#CarryOnLearning
A sample of air starts at STP. The volume and moles remains the same, what happens to the pressure if the temperature changes to 317 K?
show steps
Answer:
Pressure increases to 1.16 atm if the temperature changes to 317 K.
Explanation:
The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C (or 273 K) are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.
On the other hand, Gay Lussac's law indicates that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases. This law mathematically indicates that the quotient between pressure and temperature is constant:
[tex]\frac{P}{T}=k[/tex]
Studying an initial state 1 and a final state 2 is fulfilled:
[tex]\frac{P1}{T1}=\frac{P2}{T2}[/tex]
In this case:
P1= 1 atmT1= 0 C= 273 KP2= ?T2= 317 KReplacing:
[tex]\frac{1 atm}{273 K} =\frac{P2}{317 K}[/tex]
Solving:
[tex]P2=317 K*\frac{1 atm}{273 K}[/tex]
P2= 1.16 atm
Pressure increases to 1.16 atm if the temperature changes to 317 K.
Which air mass would be cold and wet?
Group of answer choices
mP
mT
cT
cP
A
Answer: mP
Explanation:
Maritime polar forms cold water and the weather is cold and wet.
;)
What's the number of atoms in one mole of Magnesium?
Answer:
he mass in grams of one mole of substance is called molar mass. Each element has its own unique molar mass. For example, carbons molar mass is 12.011 g/mol, and magnesium's molar mass is 24.3050 g/mol. To see why these elements have different molar masses, we need to remember that the atoms of different elements contain different numbers of protons, neutrons, and electrons, so they have different masses. The atomic masses given in the periodic table inside the front cover of this book represent the different weighted average masses of the naturally occurring atoms of each element. Different atomic masses lead to different molar masses.
For example, the atomic mass of magnesium (24.3050) shows us that the average mass of magnesium atoms is about twice the average mass of carbon atoms (12.011), so the mass of 6.022 x 1023 magnesium atoms (the number of atoms in 1 mole of magnesium) is about twice the mass of 6.022 x 1023 carbon atoms (the number of atoms in 1 mole of carbon). Thus the molar mass of magnesium is 24.3050 g/mol, compared to carbons molar mass of 12.011 g/mol.
Explanation:
How do rock transformations on Venus and Earth indicate the planetary similarities between the two planets?
Answer:
Both the Earth and Venus show the appearance of igneous rocks due to the cooling of the magma.
Explanation:
As we know, ignea rock is the first step in the transformation of rocks. This rock is formed by the overflow of terrestrial magma which, upon cooling, turns into ignea rock, which will undergo metamorphism and transform into metamorphic rock, which will continue to undergo metamorphosis until it becomes the other rocks that complete the rock cycle. This is a terrestrial process that can be found on Venus, which also presents the cooling of magma in the formation of ignea rock, which will undergo metamorphism, transforming into other rocks, the way it occurs on Earth.
A science teacher places a sealed microwave bag of popcorn on a balance and measures its mass.
She microwaves the popcorn and finds the mass again before opening the bag. The masses are nearly the same.
Which scientific law does this BEST demonstrate?
Law of Conservation of Energy
Law of Thermodynamics
Law of Conservation of Volume
Law of Conservation of Matter
Answer:
D.) The Law of conservation of Matter
Explanation: The popcorn goes into the microwave and since matter cannot be created or destroyed the mass stays the same.
Answer:
aki you there how are you
Explanation:
What is the molarity of a solution where one mole of NaOH is added to 2000mL of water
Answer:
Molarity of a solution where one mole of NaOH is added to 2000mL of water is 0.0005
Explanation:
Molarity is the equal to number of moles of solute divided by total volume of solvent
Given -
Number of moles of solute i.e NaOH = 1
Total volume of solvent i.e water = 2000 mL
Molarity [tex]\frac{1}{2000} = 0.0005[/tex]
What term describes the temperature at which a substance can change state from a liquid to a gas?
A. Boiling point
B. Melting point
C. Freezing point
D. Specific heat
Option A. Boiling point.
Explanation:
When you heat the water, the water gets converts into gaseous form.
As you know that water is in liquid form. So, when you heat the water, the water molecules absorbs the heat and get dispersed from one another molecules. i.e., molecules go far from the other molecules as they absorbed heat.
The term describes the temperature at which a substance can change state from a liquid to a gas, is boiling point. Therefore, option A is correct.
What is boiling point ?The temperature at which a liquid's vapor pressure equals the pressure around it and the liquid transforms into a vapor is known as the boiling point of a substance. A liquid's boiling point varies depending on the atmospheric pressure in the area.
Boiling point and saturation temperature are synonyms. Sometimes the measurement's pressure serves as a definition for the boiling point. The International Union of Pure and Applied Chemistry was founded in 1982.
The boiling point of a sample can be calculated using a number of techniques, such as distillation, reflux, and a Thiele tube. The simplest approach makes use of a Thiele tube and has the benefit of requiring less than 0.5mL of substance.
Thus, option A is correct.
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a raindrop has a mass of 0.050g. how many moles of water does a raindrop contain
Answer:
The raindrops of mass 0.050g has 0.0028 moles of water
Which of the following statements is true?
Mushrooms and algae are part of the fungi group.
Fungi are a special type of plant.
Fungi can feed off both living and dead organisms.
Fungi can make their own food using photosynthesis.
Answer:
Mushroom and algae are part of the fungi group
Choose the mixed number that is equivalent to $ 5.08.
5 8/100
5 80/100
80/100
8/100
Answer:
a. 5 8/100 is equivalent to $ 5.08.
Explanation:
i hope this helps :)
one example of potential energy.
Answer:
a raised weight
water that is behind the dam
a car that is parked at the top of a hill
a you before it released
a ripe fruit before It falls
Use
your table of values to solve the problem below:
What is the (delta)Srxn of the following unbalanced reaction?
N2(g) +
O2(g) →
NO2(g)
do not round
A nuclide is defined as?
Answer:
Nuclide, , also called nuclear species, species of atom as characterized by the number of protons, the number of neutrons, and the energy state of the nucleus. ... The term nuclide is not synonymous with isotope, which is any member of a set of nuclides having the same atomic number but differing mass number.
Explanation:
Answer:
a distance isotope of an atom
Explanation: