Answers
Related Questions
how do you do #4??
help please.
Answers
Answer:
The third one
Explanation:
In all those equations except the third one the number of Na in the reactant side is not equal to the number of Na in the products side but in the third equation Na is 2 in both sides
Ok we trying this again. so just in case if the picture isnt showing, here are the questions:
1. Given the unbalanced equation:
C12H22O11 = C + H2O
If you produced 34.55 moles of C, how many moles of water were produced as well?
2. Given the unbalanced equation:
Cr + H2SO4 = CrSO4 + H2
If you want to make 14.81 moles of CrSO4, how many moles of Cr do you need?
Answers
Answer:
1. 31.68 moles of water, H₂O
2. 14.81 moles of Cr
Explanation:
1. Determination of the number of mole of water, H₂O.
The balanced equation for the reaction is given below:
C₁₂H₂₂O₁₁ —> 12C + 11H₂O
From the balanced equation above,
1 mole of C₁₂H₂₂O₁₁ produced 12 moles of C and 11 moles of H₂O.
Next, we shall determine the number of mole C₁₂H₂₂O₁₁ needed to produce 34.55 moles of C. This can be obtained as follow:
From the balanced equation above,
1 mole of C₁₂H₂₂O₁₁ produced 12 moles of C.
Therefore, Xmol of C₁₂H₂₂O₁₁ will produce 34.55 moles of C i.e
Xmol of C₁₂H₂₂O₁₁ = 34.55 / 12
Xmol of C₁₂H₂₂O₁₁ = 2.88 moles
Thus, 2.88 moles of C₁₂H₂₂O₁₁ is needed.
Finally, we shall determine the number of mole of water, H₂O produced from the reaction. This can be obtained as follow:
From the balanced equation above,
1 mole of C₁₂H₂₂O₁₁ produced 11 moles of H₂O.
Therefore, 2.88 moles of C₁₂H₂₂O₁₁ will produce = 2.88 × 11 = 31.68 moles of H₂O.
Thus, 31.68 moles of water, H₂O were obtained from the reaction.
2. Determination of the number of mole of Cr needed.
The balanced equation for the reaction is given below:
Cr + H₂SO₄ —> CrSO₄ + H₂
From the balanced equation above,
1 mole of Cr reacted to produce 1 mole of CrSO₄.
Finally, we shall determine the number of mole of Cr needed to produce 14.81 moles of CrSO₄. This can be obtained as follow:
From the balanced equation above,
1 mole of Cr reacted to produce 1 mole of CrSO₄.
Therefore, 14.81 moles of Cr will also react to produce 14.81 moles of CrSO₄.
Thus, 14.81 moles of Cr is needed for the reaction.
which nonmetal has the greatest chemical activity?
Answers
Answer:
element fluorine
Explanation:
Since the noble gases are a special group because of their lack of reactivity, the element fluorine is the most reactive nonmetal. It is not found in nature as a free element. Fluorine gas reacts explosively with many other elements and compounds and is considered to be one of the most dangerous known substances.
Answer:
element fluorine
Explanation:
Since the noble gases are a special group because of their lack of reactivity, the element fluorine is the most reactive nonmetal. It is not found in nature as a free element. Fluorine gas reacts explosively with many other elements and compounds and is considered to be one of the most dangerous known substances.
What is the dewpoint when the dry bulb temperature is 20°C and the relative humidity is 17%?
1. -5°C
2. -2°C
3. 11°C
4. 15°C
Answers
The dewpoint when the dry bulb temperature is 20°C and the relative humidity is 17% is = 15°C
The dewpoint will be [tex]3.4^{0} C[/tex] when the dry bulb temperature is 20°C and the relative humidity is 17%.
What is dewpoint?Under constant air pressure as well as water content, the dew point is just the temperature at which air must be chilled to be saturated with water vapor. Moisture capacity is lowered when temperatures fall below the dew point, and airborne water vapor condenses to produce liquid water termed dew.
The dew point can be calculated by using the formula:
Td = T - (100- RH) / 5
where, Td is dew point.
Calculation of dewpoint is shown as:
Now, put the value of given data in dew points formula:
Td = 20 -(100- 17) / 5
Td = 20 -(83) / 5
Td = 20-16.6
Td = 3.4[tex]3.4^{0} C[/tex]
Therefore, the dewpoint will be 3.4[tex]3.4^{0} C[/tex].
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Which of the following is the
correct way to express
0.0000321 in scientific
notation?
Answers
A gardener cut her finger while pruning shrubs. She noticed that after two weeks the wounds had nearly healed with just a small scar remaining. Which statement describes what will happen next?
A. Each one of the individual cells near the wound will grow in size to cover the injured part.
B. Cells will be transported from distant areas to the wound to cover the injured area.
C. The cells near the wound will produce identical cells by mitosis to repair the damaged tissues.
D. A material will be released by the injured cells that will cover the wound and repair the cells.
Answers
Answer:
c
Explanation:
The wound will be healed by the production of new cells near the wound by the cell replication process and the therefore the identical cells are produced by the mitosis to repair the damaged tissues.
Note the below points about mitosis;
The mitosis is a process in which the cell replication occurs.In mitosis, the single parent cell is divided into two identical daughter cells by the process of cell division, it takes by time.The mitosis involves the healing of wound, growth of the organisms, replacement of the worn out cells.Thus, mitosis is the process involved in the healing of wound in living beings.
Therefore, we can say that the answer of the question is C. The cells near the wound will produce identical cells by mitosis to repair the damaged tissues.
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How many seismograph stations are needed to use the S-P-method? Why?
Answers
a minimum of three seismograph stations are needed to find an earthquake's epicenter using the S-P time method.
Scientists use triangulation to find the epicenter of an earthquake. When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. ... Knowing this helps them calculate the distance from the epicenter to each seismograph.
Explanation:
PLEASE HELPPP AND THANK YOUUUU
Answers
Most hot air balloons are round. Yes, you can have some other shapes like this one, but its shape is still rounded. Using the assumptions, explain why a square hot air balloon would be hard to make.
Answers
A square hot air balloon would be hard to make because the round shape of traditional hot air balloons allows for even distribution of heat, which is necessary to maintain the balloon's lift and stability.
What is a hot air balloon ?A hot air balloon is a balloon filled a heated air which can rise above the atmosphere. In a round balloon, the heat from the burner is evenly distributed around the circumference of the balloon, causing the air inside to heat up and rise, which in turn causes the balloon to lift.
If a hot air balloon were to be made in a square shape, the heat would be distributed unevenly and concentrated in certain areas. This could cause the balloon to become unstable, as the hot air would rise in some areas but not others, leading to uneven lifting and potential loss of control.
Additionally, the corners of the square shape would be more susceptible to damage and could create weak points in the structure of the balloon.
Therefore, while it is possible to create hot air balloons in other shapes, the traditional round shape has been found to be the most effective and efficient for maintaining the necessary heat distribution and stability required for safe and successful flight.
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Which of the following is NOT an effect of human development on the Everglades?
A pocosins
B. water pollution
Answers
Please help me with questions 43, 44, and 45
Answers
A scuba diver swims deeper and deeper into the ocean. What happens to the nitrogen in her blood as she goes deeper
Answers
Answer:
it compresses under the pressure.
Explanation:
when she comes up, it will re-expand as pressure goes down- this is why they have to be very careful how fast they come back up.
Answer:
If a diver goes through too great of pressure change too quickly, their body cannot eliminate all of the expanding nitrogen and the excess nitrogen forms bubbles in their tissues and blood. These nitrogen bubbles can cause decompression sickness (DCS) by blocking blood flow to various parts of the body, causing strokes, paralysis, and other life-threatening problems.
7
What type of molecule would deviate the most from ideal gas behavior?
Answers
Answer:
molecule at low temperature and high pressure
Explanation:
this is because two of the postulates of kinetic theory of gases hold true only when there is low pressure and high temperature. as the pressure goes on increasing and temperature goes on decreasing, a molecule will deviate from ideal behavior.
“Nature vs. nurture” is a debate about
A
whether a trait is learned or inherited.
B
the traits of plants vs. the traits of animals.
с
whether animals can teach humans new traits.
D
whether a trait was acquired outdoors or indoors.
Answers
Answer:
Letter A
whether a trait is learned or inherited
Explanation:
The nature versus nurture debate involves the extent to which particular aspects of behavior are a product of either inherited (i.e., genetic) or acquired (i.e., learned) influences. Nature is what we think of as pre-wiring and is influenced by genetic inheritance and other biological factors.
The debate called Nature vs. nurture is about whether a trait is learned or inherited. This is an investigation on learned traits and nurtured traits in humans. Thus option A is correct.
What are learned traits ?All living things are learning something during their growth. These learning mold up one's personality and cannot be created by birth. Like the good characteristics we are learning from schools. These behaviors are called learned traits.
Some traits or behaviors are created by birth itself and they are called natural traits. The nature versus. nurture debate is a philosophical, scientific, and cultural discussion about whether human culture, conduct, and personality are largely influenced by nature or nurture.
Environment, culture, and experience are the most prominent definitions of nurture in this discussion, whereas nature is frequently regarded as genetic or hormone-based behaviors, characteristics, and dispositions.
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Why do the algae all look identical while the frogs look different?
Answers
Answer:
because algae made asexually but the frogs come from two sources mother and father
Explanation:
hope it will help you
A car battery produces electrical energy with the following chemical reaction.
Pb + PbO2 + 2H2SO4 →; 2PbSO4 + 2H20
What is the mole ratio of PbO2 to water?
PbO2:H,0 = 1:
Answers
If you look at the start of PbO2 it does not have a number so that is the one and if you look at 2H2O that has a 2 in front so that is where you get the 1:2 ratio
if a solution has a pH of 1.50, what is the pOH of the solution?
Answers
Answer:
pOH = 12.50
Explanation:
pOH + pH = 14
pOH = 14 - 1.50 = 12.50
Who made the first periodic table of the element
Answers
Answer:
Her name is Dmitri Mendeleev
So basically there was earth fire water and air,
And the 4 elements were chilling,
But on Feb 17, 1869. This russian dude was like,
NOPE there like 1 million elements actually
So yea, hope this helps lol
(NH4)2 + NaOH -> NH3 + Na2SO4 + H2O how to make this balanced
Answers
Answer:
(NH4)2SO4 + 2NaOH --> 2NH3 + Na2SO4 + 2H2O
Explanation:
A 2.0 L bag of potato chips in Denver is that 15 C0 print 82 ATM. The same bag is brought to the top of long peaks in the cold winter day. If the back and only spent 2.5 L before exploding and along peak has a temperature of negative 5C and a pressure of 0.45 ATM for the bag explode
Answers
Answer:
hello your question is poorly written below is the complete well written question
.A 2.0 L bag of potato chips in Denver is at 15oC and 0.82 atm. The same bag is brought to the top of Longs Peak on a cold winter day. If the bag can only expand to 2.5 L before exploding and Longs Peak has a temperature of -5oC and a pressure of 0.45atm, will the bag explode? Use the combined gas law to prove this to yourself
answer : The bag will explode
Explanation:
Given data :
Volume of bag ( v1 ) = 2 liters
Initial pressure ( p1 ) = 0.82 atm
Initial temp ( T1 ) = 15 + 273 = 288 k
Final Pressure on long peak (P2) = 0.45 atm
Final temp on Long peak (T2) = (273 - 5 ) K = 268 K
Determine the Final volume in long peak to know if the bag will explode
applying the gas laws
P1v1 / T1 = P2V2 / T2
V2 = p1*v1*T2 / p2 *T1
V2 = ( 0.82 * 2 * 268 ) / ( 0.45 * 288 )
= 3.39 Liters
since final volume ( V2 ) > ( v1 ) the bag will explode
Scientists often repeat experiments multiple times.
Why is this important?
A.
Repeating an experiment helps to verify the results.
B.
Repeating an experiment turns a hypothesis into a theory.
C.
Repeating an experiment allows scientists to test different variables.
D.
Repeating an experiment gives scientists something to do while they think of new hypotheses.
Answers
Answer:
A
Explanation:
Hi! The reason scientists often experiments multiple times is because repeating an experiment helps to verify the results.
A gas occupies 4.0 L of air at 1.0 atm pressure and 30.0°C. If the gas occupies 6.0 L of air at 37.0°C, what is the pressure of the gas?
Answers
Answer:
Gas pressure is measured in units such as torr, mmHg, atm, and Pa. ... You can see mass is small, Volume is large. - hense a small ... The pressure increases if volume decreases. ... For each of the following changes of the initial balloon, select ... A sample of nitrogen (N2) has a volume of 60.0 L at a pressure of 725 mmHg.
Explanation:
Why does chlorine displace bromine from potassium bromide solution
Answers
Answer:
A more reactive halogen displaces a less reactive halogen from a solution of one of its salts.
Chlorine is more reactive than bromine, thus it displaces bromine.
molar mass of 4Fe(OH)2
Answers
Answer: The molar mass and molecular weight of 4Fe is 223.38.
WILL MARK BRAINLIST Which of the following phrases describes the similarities between problem space theory and how the brain looks at problems?
They have only three steps.
They can only be used in a laboratory setting.
They can occur quickly or slowly.
They are biased against the scientific method.
Answers
Answer:
In this theory, people solve problems by searching in a problem space
Explanation:
I hope this helps
Answer:
i do not know
Explanation:
i am not smart
sowwy :l
um...Is sulfur dioxide ionic or molecular?
Answers
Answer:
It is a molecular compound.
Explanation:
Answer:
Sulfur dioxide, SO2, is a molecular compound.
Explanation:
It contributes to acid rain, and CaCO3 is an ionic compound that can neutralize acid rain.
As the temperature of a gas is increased, the average kinetic
energy of its molecules
Answers
Answer:
Increases.
Explanation:
Temperature is the measure of the average kinetic energy of a system. As temperature increases, so will kinetic energy. As kinetic energy increases, speed increases.
How many liters would you need to make a 2 M solution if you have 3 mol of Sodium Hydroxide
Answers
Answer:
A 1 molar (M) solution will contain 1.0 GMW of a substance dissolved in water to make 1 liter of final solution. Hence, a 1M solution of NaCl contains 58.44 g.
Explanation:
Which of the following best explains
why ionic bonds form between ions?
A. Ions with opposite charges
are attracted to one another.
B. lons tightly bond together because
they have identical physical structures.
C. Positive ions attract other positive ions.
D. Negative ions attract
other negative ions.
Answers
Explanation:
B has a correct statement
3)Methanol can be produced as follows: CO (g) + 2 H2 (g) + CH4O (g)
If 250.0 L of hydrogen gas are reacted with excess CO at STP, how many grams of CH40 can be produced?
Answers
22.4 32 g
250 x
22.4 is the volume at STP conditions, 32g is the molar mass of CH4O.
you cross multiply and the answer is 357 g