Answer: it decreases because it reacts with hydronium ions that form during exercise
Explanation: 100% on edge
Answer:
B: it decreases because it reacts with hydronium ions that form during exercise
Explanation:
What types of equipment would you need to make measurements in the chemistry laboratory?
Answer:
test tube
condenser
thermometer
beaker
watch glass
mortar
buret
The types of equipment needed for making measurements in the chemistry laboratory are the quantitative apparatus.
What are quantitative apparatus?
Quantitative apparatus like beakers help in mixing,heating and stirring the chemicals together.They come in variety of sizes which help in delivering different amount of chemicals from one apparatus to another. for example-volumetric flask,pipette
Volumetric flask is a kind of quantitative apparatus which helps in making standard solutions of different quantities. It come in different sizes of 50,100,250,500 ml.
Pipette is a kind of quantitative apparatus which helps in dispensing accurate volume of liquid from one apparatus to another.It also comes in varied sizes which used for dispensing different volumes of liquid.
Thus,by using quantitative apparatus in chemistry laboratories amount of substance present in a solution can be determined.
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Which sodium chloride solution has a molarity of 6.5M?
1-6.5 grams of sodium chloride dissolved in 1.0 L of water
2-6.5 mol of sodium chloride dissolved in 1.0 mol of water
3-52 moles of sodium chloride dissolved in 8.0 L of water
4-2.6 moles of sodium chloride dissolved in 4000 L of water
Answer:
2-6.5 mol of sodium chloride dissolved in 1.0 mol of water
Explanation:
I'm not sure, do a little research because I may be wrong
N2(g) + 3 H2(g) 2 NH (g)
12 How many moles of hydrogen are consumed to produce 100 g of ammonia?
A 17.8 mol H2
B. 17.6 mol HE
C 8.80 mol H2
D3 91 mol H2
Answer:
This is a stoichometric ratio
Explanation:The equation is already balanced, so all you have to do is.
1. Count the molar mass of Ammonia N nitrogen atom has an atomic mass of 14 so add 14+ 3 hydrogens which each have a mass of 1 that gives you 17 grams per mole of ammonia on the right side, so they want to know how much hydrogen is needed to make 100 grams of ammonia, so what you have to do is divide 100/17=2.94 that is your ratio so you now know there is 2.94 times everything in the equation so at first you had 3 moles of hydrogen now you have 3*2.94 moles of hydrogen. You also have 2.94 moles of N2 gas. It's just a ratio if you plug in 200 instead you have to multiply everything by 200/17=11.76 ratio.
1st step count molar mass of product.
2nd plug number they gave you and divide it by molar mass ratio then multiply everything in equation by that ratio.
A 32.4 L gas sample at STP is compressed to a volume of 28.4 L, and the temperature is increased to 352 K.
What is the new pressure of the gas in atmospheres? Answer: 1.47atm
How do I solve this?
Answer:
The new pressure of the gas is 1.47 atm.
Explanation:
STP in chemistry is the abbreviation for standard temperature and pressure. In this case the standard temperature is 273 K (0 ° Celsius or 32 ° Fahrenheit) and the standard pressure is 1 atm of pressure.
The equation that relates P, V, and T is called the ideal gas “law”. This law relates the variables in an initial state 1 and a final state 2 by the expression:
[tex]\frac{P1*V1}{T1} =\frac{P2*V2}{T2}[/tex]
In this case:
P1= 1 atmV1= 32.4 LT1= 273 KP2= ?V2= 28.4 LT2= 352 KReplacing:
[tex]\frac{1 atm*32.4 L}{273 K} =\frac{P2*28.4 L}{352 K}[/tex]
and solving you get:
[tex]P2=\frac{352 K}{28.4 L} \frac{1 atm*32.4 L}{273 K}[/tex]
P2= 1.47 atm
The new pressure of the gas is 1.47 atm.
B. Write True If the statement is correct, and False If not,
1. Copulation is the natural act of sexual intercourse in animals.
2. The penis is the primary sex organs of male animals. It can be found in mod
mammals.
3. The fertilized egg is called zygote.
4. Hermaphrodiles are animals with both female and male sex orgons.
5. The vagina is the primary sex organ of female animals. It can be found in
most mammals.
6. All frog reproduces sexually,
7. Male mosquitoes only live for about a month
8. Female mosquitoes lay eggs in a dry container
9. Female butterfly lays from 100-300 eggs during her life
10. Reproduction is to produce, or produce new organisms of the same lype.
11. Reproductive system is the collection of Internal and external sex orgonsin
both males and females.
12 A new human Individual develops from cell called gamete
13. Sexual reproduction is making a copy of the organism with a single
parent.
14. Corolla are group of petals
15. Filament holds the anther in a position tall enough to release the pollen.
16. Petals are the obvious part of a flower, brightly colored.
17. Pistil is the female parts of a flower.
18. Stigma are the swollen structure at the end of the style. It receives the
pollen grains.
19. Sepals are the modified that support the bottom of the flower.
20. Pollen grains contains the female gamete or egg cell.
PLS HELP GIVING BRAINLESS During a Chemical reaction substances (called reactants) are combine to form of new substances (called products). Which of the following accurately describes reactants and products of a Chemical reaction?
A) The product contains a different number of atoms then the reactants but have the same properties
B) The number of atoms in properties are the same in there reactants and Products
C) The products contain the same number of atoms as the reactants but have different properties
D) The number of atoms and properties are different in the reactants and the products
Answer:
your answer is gonna most likely be b
Determine the ratio of electrostatic potential energies for CsF and Csl.
lon
lonic Radius (pm)
Cst
170
F-
133
1
220
Answer:
The answer is "1.29".
Explanation:
Formula for electrostatic potential energy:
[tex]\to V=\frac{K Q_1 \times Q_2}{r}[/tex]
where
[tex]\to K = \text{electrostatic constant}\\\\\to Q= \text{Charge on Cation}\\\\[/tex]
The Charge on Cation is [tex]C_{s}^{+}[/tex] is cation in both [tex]C_sI[/tex] and [tex]C_sF[/tex] were same:
[tex]\to V\ \alpha \ \frac{1}{r}[/tex]
[tex]\to \frac{V(C_sF)}{V(C_sI)} = \frac{r(C_sI)}{r(C_sF)}[/tex]
[tex]= \frac{r(C_s^{+}) +r(I^{-})}{r(C_s^{+}) +r(F^{-})} \\\\=\frac{170+220}{170+133} \\\\=\frac{390}{303} \\\\ =1.2871 \\\\ =1.29[/tex]
Type the correct answer in the box.
What's the velocity of the balloon? Use V=VKE
A hot air balloon with a mass of 400 kilograms moves across the sky with 3,200 joules of kinetic energy. The velocity of the balloon is meters/second.
Reset
Next
Answer:
4 m/s
Explanation:
Step 1: Given data
Mass of the balloon (m): 400 kgKinetic energy of the balloon (KE): 3200 JStep 2: Calculate the velocity (v) of the balloon
The kinetic energy is the energy that the balloon has due to its movement. We can calculate the velocity of the balloon using the following expression.
v = √(2 × KE/m)
v = √(2 × 3200 J/400 kg) = 4 m/s
When the temperature of matter increases the particles what happens
Answer:
the particles move faster
Explanation:
when the temperature of matter increases the particles move faster as they gain kinetic energy
Which change in this process would shift the equilibrium to produce the
maximum possible NH3?
3H2 + N2 2 2NH3 + energy
A. Removing the N2 as it forms
B. Removing the NH3 as it forms
c. Decreasing the pressure
D. Increasing the temperature
Answer: B I think, I'll put my reasoning below.
Explanation:
It's not A because removing N2 would only shift the equation the opposite way.
It's not C and D because I don't think those affect the specific amount of each reactant/product produced. I think temperature only affects the speed at which the reaction is performed, which won't affect anything in this case.
Removing the ammonia as it forms is the correct answer to produce the maximum possible NH₃.
What is Haber's Process ?It is an industrial process for manufacturing ammonia by reaction of nitrogen with hydrogen.
N₂+3H₂ ⇌ 2NH₃
The reaction is reversible and exothermic
To answer this question we will consider all the options and answer
Option D ) Increasing Temperature
Haber's process requires an optimal temperature of 450°C ,on Increasing temperature the yield of ammonia gets slow down.
Option C) Decreasing Pressure
Haber's Process requires high pressure to drive the reaction , higher the pressure more is the yield.
Option A ) Removing the N₂ as it forms , on removing N₂ the reaction will drive on the reverse side hence low yield of NH₃ .
Option B) Removing the NH₃ as it forms , this can actually increase the yield as removing the ammonia will lead to shift the equilibrium and therefore increasing the yield.
Therefore Option B , Removing the ammonia (NH₃) as it forms is the correct answer to produce the maximum possible NH₃.
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How is the bent geometry related to the tetrahedral geometry?
Answer:
this shape is called bent or angular. a molecule with four electron groups around the central atom orients the four groups in the direction of a tetrahedron.if there are four atoms attached to these electron groups then the molecular shape is also tetrahedral.
Explanation:
Hope this helped Mark BRAINLEST!!!!!
Bent geometry related to the tetrahedral geometry because of;
The two lone pairs and the two bonds
Bent Geometry in chemistry simply means that a molecule forms a V-shape with two other lone pairs and 2 bonds in a non collinear arrangement.Example is water (H₂O). In this example Oxygen will form a V-shape with the 2 hydrogen molecules which are the lone pairs as well as two bonds for each of the hydrogen molecule.
Tetrahedral geometry is one in which there is a central atom surrounded by 4 isolated atoms that are bonded with the central atom to form a tetrahedral shape. A very good example is Methane(CH₄). In CH₄, Carbon will be the central atom and the four corner atoms bonding with Carbon will be the hydrogen atoms.In conclusion, the relationship between bent geometry and tetrahedral geometry is that they both have 2 bonds and 2 lone pairs.
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After World War II, which of the following changes occurred in Germany?
Germany became two separate countries.
Germany became four separate countries.
Germany became part of the Soviet Union.
Germany became one of the Allies.
Answer:
Germany became 2 separate countries
Explanation:
They were know as west and east Berlin. one controlled by soviet russia and one (east). And the west by a series of western nations such as France and britain the largest of which being the US
Answer:
A. germany became two separate countries.
Explanation:
have a great day peeps :)
A Doppler radar _________. *
1. can detect precipitation as well as the movement of small particles, which can be used to approximate wind speed.
2. is a device that measures wind speed
3.is a computer models used to determine a weather forecast
4. is a package of weather instruments carried many kilometers above the ground by a weather balloon.
_Al(NO3)3 +_(NH4)3 P04_AlPO4+_ NH, NO3
balancing equations
Answer:
Al(NO₃)₃ + (NH₄)₃PO₄ —> AlPO₄ + 3NH₄NO₃
The coefficients are: 1, 1, 1, 3
Explanation:
__Al(NO₃)₃ + __(NH₄)₃PO₄ —> __AlPO₄ + __NH₄NO₃
The above equation can be balance as illustrated below:
Al(NO₃)₃ + (NH₄)₃PO₄ —> AlPO₄ + NH₄NO₃
There are 12 atoms of H on the left side and 4 atoms on the right side. It can be balance by writing 3 before NH₄NO₃ as shown below:
Al(NO₃)₃ + (NH₄)₃PO₄ —> AlPO₄ + 3NH₄NO₃
Now the equation is balanced.
The coefficients are: 1, 1, 1, 3
Which of the following most likely happens when the volume of a gas increases? (4 points)
Answer:
Molecules in the gas move faster due to the fact they have more energy
Explanation:
If you put more heat the higher the volume will be. Less heat means less volume.
(have a great day!)
Select ALL factors in conservation: *
Social conditions such as need for electricity, famine, and war.
Scientific data related to the ecosystem and the effect of environmental changes.
Political action by governments and other organizations such as environmental
protection groups.
Economic issues such as cost of wood products, fuel for heat, price of electricity, and
income levels of local people.
Answer:
ALL of these are factors in conservation.
Explanation:
Which front forms widespread clouds, rain, or snow?
Answer:
Warm front
Explanation:
Warm front forms widespread clouds, rain, or snow.
Answer:
Warm front
Explanation:
Just took the quiz
When vinegar and baking soda are combined, a mixture is produced, and
a gas is released. Which statement is true?
Answer:
When vinegar and baking soda are combined a mixture is produced which is carbon dioxide. A gas is released.
Explanation:
what is a face atom?
Answer:
Explanation:
An atom on a face is shared by two unit cells, so only half of the atom belongs to each of these cells. An atom on an edge is shared by four unit cells, and an atom on a corner is shared by eight unit cells.
If you have 2 solutions: one equal to 9mol/L and another with 6 mol/L,
which statement is true? *
O
9 mol/L solution is thicker than the 6 mol/L solution
о
6 mol/L solution is less concentrated than the 9 mol/L solution
9 mol/L solution is less concentrated than the 6 mol/L solution
O 9 mol/L solution is equally as concentrated as the 6 mol/L solution
Answer:
Explanation:
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Which statement describes the reaction involved in cellular respiration?
O A. CO2 is removed from the atmosphere, and O2 is released into the
atmosphere.
B. Sugar is produced and stored until it is needed for energy,
O c. It is a redox reaction in which energy is released to ATP
molecules.
O D. O, is removed from the atmosphere, and CO2 is released into the
atmosphere.
Answer:
A.Photosynthesis
B.Glucose
C . fermentation
D.Aerobic respiration
Explanation:
A. glucose form as a product of photosynthesis
B.glucose is simple sugar and it must be always converted to complex sugar so that it can be stored
C.Energy converted to ATP
D.Living organisms respire using oxygen and carbon dioxide is always formed as a by product
Answer:
the awnser is c
Explanation:
At equilibrium,
a. the forward reaction rate is equal to the reverse reaction rate.
b. the forward reaction rate is higher than the reverse reaction rate.
c. no reactions take place.
d. the forward reaction rate is lower than the reverse reaction rate.
Hi just wanted to say thank you for answering my question and I wanted to help so I believe the answer is A.
WILL MARK BRAINLIEST!!From where does geothermal energy come?
A)from deep within the earth
B)from the energy captured from the sun
C)from steam
D)from nonrenewable energy sources
Answer:
A)from deep within the earth
Explanation:
Balance this equation:
MgCl2 --> Mg4+ Cl2
Answer:
4MgCl2---> 4Mg+4Cl2
Explanation:
please mark me as brainlist and be happy
Answer:
2Mgcl2 --->Mg4+cl2 i hope it help you :)))
What internal structure do a zebra and a lion share?
Claws
Backbone
Hooves
Hair
Answer:
BACKBONEEEE
Explanation:
Answer:
the answer would be backbone
Explanation:
zebras don't have claws and lions don't have hooves. Finally, hair isn't an internal structure. the correct answer is backbone.
Discuss the nature of the bonding in the nitrate ion ( ) NO32 .Draw the possible Lewis resonance diagrams for this ion.Use the VSEPR theory to determine the steric number, thehybridization of the central N atom, and the geometry ofthe ion. Show how the use of resonance structures can beavoided by introducing a de-localized p MO. What bondorder is predicted by the MO model for the NUO bondsin the nitrate ion
Answer:
Four electrons are bounded by eight electrons
and the bond order = 4/3
Explanation:
The molecular ion has 24 valence electrons and The SN of N in the central of the structure is = 3 according to VSEPR Theory. and this depicts trigonal planar geometry about the central nitrogen also this corresponds to sp^2 hybridization of the valence orbital of the atom N.
The 6 valence electrons are shared between N and O's, while the 2p orbital of Nitrogen will combine with the 2p orbital on each oxygen atoms in order to form four (4) π molecular orbitals. the binding orbital is occupied by a pair of electrons. Four electrons are bounded by eight electrons
and the bond order = 4/3
Attached below is the Lewis structure and resonance structures of the ion ( NO^- 3 )
What Are the Answers.
Answer:
Yes
Explanation:
it is
In the picture below, two liquids are combined and a yellow
solid is formed. Which of these is the best evidence that a
chemical reaction occurs when the liquids are mixed?
Select one:
O
The density of one liquid is different from the other.
A new substance with different properties is formed.
O
Two substances are combined.
The volume of the beaker changes.
Answer:
A new substance with different properties is formed.
A student studied the concept of order in the human body. Which
statement best summarizes how part of the human body is ordered?
1.cells are organized to form tissues
2. Tissues are organized to form cells.
3.organ systems work together to form tissues
4. Tissues work together to form organ systems.
5. Other
Answer:
1. cells are organized to form tissues
Explanation:
Cells are organized to form tissues is the statement best summarizes how part of the human body is ordered. Hence option 1 is correct.
What are cells?Cells are defined as the smallest component of living things, including biological tissues, that is capable of independent existence. The cell membrane, nucleus, and cytoplasm are the three major structural components of a cell. A cell's membrane, which encloses it and regulates what enters and leaves it, controls the flow of chemicals.
Organs are formed from tissues, which are composed of cells. Organ systems, such as the skeletal and muscular systems, are groups of organs. Cells, tissues, organs, and organ systems make up the several levels of organization in the human body. The human body, which is made up of countless billions of cells, is a marvel of structure and functionality.
Thus, cells are organized to form tissues is the statement best summarizes how part of the human body is ordered. Hence option 1 is correct.
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a cell is placed in a salt solution that has the same concentration as the inside of the cell. What will happen to the cell ?
Answer:
it would dry up
Explanation: