Answer:
The passive transportation for the modification that occurs when a propyl group is added to the hydroxyl group on C1 of glucose will not occur
The passive transportation for the modification that occurs when a propyl group is added to the hydroxyl group on C6 of glucose will not occur
Explanation:
The hugeness of glucose poses a threat to its transportation across biological membrane as it can only be transported through Passive- mediated transport (when there is spontaneous transportation of molecules passively) and never through the regular diffusion.
The passive transportation for the modification that occurs when a propyl group is added to the hydroxyl group on C1 of glucose into the cell will not occur as the original C1 is one of the components responsible for extracellular surface binding.
Also, the passive transportation for the modification that occurs when a propyl group is added to the hydroxyl group on C6 of glucose out of the cell will not occur as the original C6 is one of the components responsible for cytosolic surface binding.
You find a 1979 copper penny (pre-1982 pennies are pure copper) in the snow and pick it up. How much heat does the penny absorb as it warms from the temperature of the snow, -5.0∘C to the temperature of your body, 37∘C. Assume the penny is pure copper and has a mass of 3.10 g. (The specific heat capacity of copper is 0.385 J/g∘C.)
Answer:
50.127 J
Explanation:
The following data were obtained from the question:
Initial temperature (T₁) = –5 °C
Final temperature (T₂) = 37 °C
Mass (M) = 3.10 g
Specific heat capacity (C) = 0.385 J/gºC
Heat (Q) absorbed =?
Next, we shall determine the change in temperature. This can be obtained as follow:
Initial temperature (T₁) = –5 °C
Final temperature (T₂) = 37 °C
Change in temperature (ΔT) =?
ΔT = T₂ – T₁
ΔT = 37 – (–5)
ΔT = 37 + 5
ΔT = 42 °C
Finally, we shall determine the heat absorbed. This can be obtained as follow:
Mass (M) = 3.10 g
Specific heat capacity (C) = 0.385 J/gºC
Change in temperature (ΔT) = 42 °C
Heat (Q) absorbed =?
Q = MCΔT
Q = 3.10 × 0.385 × 42
Q = 50.127 J
Thus, the heat absorbed is 50.127 J.
If a 130-kg car is traveling at a velocity of 23 m/s, what is the kinetic energy of the car?
Kinetic energy is the amount of energy present in the object due to motion. It is required by the body for action and motion. The kinetic energy of the car is 34385J.
What is kinetic energy?Kinetic energy is a type of energy that is directly proportional to the mass of the object and the square of the velocity. The formula for the kinetic energy can be given as,
[tex]\rm KE = \dfrac{1}{2}mv^{2}[/tex]
Here,
Mass of the car (m) = 130 kg
Velocity of the car (v) = 23 m/s
Substituting values in the equation:
[tex]\begin{aligned}\rm KE &= \dfrac{1}{2}\rm mv^{2}\\\\&= \dfrac{1}{2}\times 130\times (23)^{2}\\\\&= 34385\;\rm J\end{aligned}[/tex]
Therefore, 34385J is the kinetic energy of the car.
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what observation helps a poison ivy plant survive in its environment
Use the following equation to answer the questions below.
CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)
-How many moles of water are produced from the reaction of 50.0g of methane (CH4)? (Show work)
Answer:
Explanation:
Here is ur answer what you wanna do first is calculate the first and second numbers and letters this should be ur answer = -394 + 2 x (-242) - (-75) + 2 x 0 = -803 kJ/mol
In the alkaline phosphatase assay, you will you be monitoring the formation of product by measuring the absorbance of the solution using a spectrophotometer. Why are you monitoring the formation of product at a pH of 9 and a wavelength of 400nm.
A. At pH 9, the product, p-nitrophenol, will be ionized, the solution will appear yellow in color, and thus can be monitored at the wavelength of maximum absorption for the phenolate ion which is 400nm.
B. At pH 9, the product, p-nitrophenol, will be ionized and colorless
C. At pH 9, the product, p-nitrophenol, will be un-ionized and yellow in color
Answer:
a. At pH 9, the product, p-nitrophenol, will be ionized, the solution will appear yellow in color, and thus can be monitored at the wavelength of maximum absorption for the phenolate ion which is 400nm
Explanation:
In alkaline phosphatase assay, the hydrolysis of p nitrophenyl phosphate to p nitrophenol happens. When the ph is 9, the product which is p nitrophenol would undergo ionization. The solution is going to appear to be of yellow and it can be monitored at a wavelength for maximum absorption of phenolate ions at 400nm.
Option A is the answer to the question.
Which feature of a balanced chemical equation demonstrates the law of
conservation of mass?
A. It has the same types of atoms on both sides of the reaction
arrow.
B. It shows the reactants of a chemical reaction to the left of the
reaction arrow.
C. It shows the products of a chemical reaction to the right of the
reaction arrow
D. It has coefficients to show how much of each substance a
chemical reaction uses.
SUBMIT
Answer:
Another answer is : It has equal numbers of each type of atom in its reactants and products.
Explanation:
I just got it right on A.pex
Given the data from the question, the correct statement is:
It has the same types of atoms on both sides of the reaction arrow (Option A) What is a chemical equation?Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.
The reactants are located on the left side while the products are located on the right side.
Reactants —> Products
The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.
From the law of conservation of matter, it is evident that the same atoms of the element in the reactants are present in the products.
Thus, we can conclude that the correct answer to the question is: It has the same types of atoms on both sides of the reaction arrow (Option A)
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A car has a mass of 222 kg and is traveling at 13m/s. What is the Kinetic energy of the
car?
Explanation:
1/2*(13^2)*222=18759
Which of the following statements about balanced chemical equations is correct?
A.
The products must contain the same numbers and types of atoms as the reactants.
B.
The products must contain the same arrangement of atoms as found in the reactants.
C.
The products must contain the same numbers but not the same types of atoms as the reactants.
D.
The products must contain the same types but not the same numbers of atoms as the reactants.
Answer:A.
The products must contain the same numbers and types of atoms as the reactants.
Explanation: I think this
Answer:a
Explanation:
Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas form aqueous glucose C6H12O6 and oxygen O2 gas. Calculate the moles of water needed to produce 0.075mol of glucose. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits
Answer: 0.45 moles of water are needed to produce 0.075mol of glucose.
Explanation:
The balanced chemical reaction is:
[tex]6CO_2(g)+6H_2O(l)\rightarrow C_6H_{12}O_6(aq)+6O_2(g)[/tex]
According to stoichiometry :
1 mole of glucose require = 6 moles of [tex]H_2O[/tex]
Thus 0.075 moles of glucose require = [tex]\frac{6}{1}\times 0.075=0.45[/tex] moles of [tex]H_2O[/tex]
0.45 moles of water are needed to produce 0.075mol of glucose.
Give two reasons why people should use petrochemicals wisely.
As petrochemicals are originate from petroleum products, it is non-renewable and also can result in pollution so they are used wisely.
What are petrochemicals?Petrochemicals are the chemical byproducts of petroleum refining. Some petroleum-derived chemical compounds are also derived from other fossil fuels, such as coal or natural gas, or renewable sources, such as maize, palm fruit, or sugar cane.
All of this begins with six fundamental petrochemicals: ethylene, propylene, butylenes, benzene, toluene, and xylenes, which are combined with other chemicals and transformed into other materials that improve products.
Concerns are raised not only about the negative environmental impact, but also about the impact on human health.
Many petrochemicals are among the most toxic substances known to man, but they are found in almost everything, from plastics to synthetic fragrances and dyes to fertilizer.
Thus, these are used wisely.
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Which formula represents an ionic compound?
A)H2
B)CH4
C)CH3OH
D)NH4CI
1. Complete the following sentences:
(a) Oxidation is a gain of electrons OR an increase in oxidation state
(b) Reduction is a loss of electrons OR a decrease in oxidation state
(c) Redox reactions involve a transfer of electrons from the element being _______________ to the element being ________________.
2. Complete the rules for assigning oxidation numbers by filling in the missing words.
(1) The oxidation number of an element is .
(2) The oxidation number of a monatomic ion is equal to the of the ion.
(3) In a polyatomic ion, the oxidation numbers of all the atoms in the ion add up to the
of the ion.
(4) In a compound, the sum of all the oxidation numbers of the atoms is
(5) The oxidation number of oxygen in its ions and compounds is always
except in where it is -1.
(6) The oxidation number of hydrogen in its ions and compounds is always
(7) The oxidation number of elements in compounds is often the same as their __________ if they were an ion
3. Give the oxidation number of the bold species in each of the following substances.
H2O S8 H2O2
AlCl3 O3 Fe2O3
MnO2 Cu KMnO4
4. Give the oxidation number of the bold species in each of the following substances.
Br- S2O32- NH4+
H2S MnO4- Cr3+
O22- Cr2O72- I-
C2O42- NO3- OCl-
SO42- MnO2 SO2
.
5. State the oxidation number of the underlined element in each of the following species.
(a) HCl (j) FeSO4
(b) CO2 (k) Fe2(CO3)3
(c) SO32- (l) KMnO4
(d) CO (m) MnI2
(e) KI (n) CaO
(f) H2O2 (o) Cr2O72-
(g) Cr(NO3)3 (p) HSO3-
(h) Br2 (q) ZnO
(i) H2SO4 (r) H2O
6. State whether each of the following reactions is an oxidation or a reduction reaction. Justify.
(a) O2- → O2
(b) I2 → I-
(c) Mg2+ → Mg
(d) HSO3- → SO42-
(e) Fe3+ → Fe2+
(f) Br2 → Br-
(g) Cr2O72- → Cr3+
(h) MnO4- → Mn2+
(i) Cl2 → Cl-
(j) H+ → H2
Which of the following is a potential exception to cell theory? Choose 1 answer: Fungal spore Asexual reproduction Mitochondria Amoebas
Answer:
Asexual reproduction
Explanation:
Cells are able to re produce themselves without other cells needed. If cells need others to make more then how would that work and plus we wouldn't have the theory of cells existing.
Is the following equation balanced?
2C2H2 + 502 --> 4CO2 + 2H2O
Answer:
The reaction: 2C2H2+5O2->5O2->4CO2+2H2O is performed by mixing 175 grams of C2H2 and 175 grams of O2 to produce 127 grams of CO2
1)Limiting reagent
2)Theretical yeield of CO2
3)Percent yield of CO2
Explanation:
I think
Coal,oil,and natural gas are examples of earths _______
Fill out the blank
Answer:
non renewable resources
Explanation:
because they cannot be readily replaced
A sample of air occupies 4.40 L when the pressure is 2.60 atm.
(a) What volume does the sample occupy at 6.20 atm at the same temperature?
L
(b) What pressure is required in order to compress it to 0.0290 L at the same temperature?
atm
Explanation:
Given that,
Initial volume, V₁ = 4.40 L
Initial pressure, P₁ = 2.6 atm
(a) Final pressure, P₂ = 6.2 atm
As per the relation,
[tex]P_1V_1=P_2V_2\\\\V_2=\dfrac{P_1V_1}{P_2}\\\\V_2=\dfrac{2.6\times 4.4}{6.2}\\\\V_2=1.84\ L[/tex]
(b) Again using the above relation,
[tex]P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{2.6\times 4.4}{0.0290 }\\\\P_2=394.48\ atm[/tex]
Hence, this is the required ssolution.
who know the song genius?
Answer:
Me
Explanation:
The one with sia??
If the theoretical yield of a reaction is 332.5 g and the percent yield for the reaction is 38 percent, what's the actual yield of product in grams? \
Answer:
for every
100 g
of product that can theoretically be produced by the reaction, you only get
71.7 g
of product.
Explanation:
please help will give brainiest
Answer:
reaction, reversed, The Law Of Conservation of Mass, mass, rusts, oxygen
Explanation:
HOPE THIS HELPS!
Pre-Lab Assignment
1.
Describe the following trends in properties of oxides across Period 3.
(a)
(b)
Their appearance.
Their volatility
Their structure.
Their acid-base character
Their conductivity
(d)
Answer:
See explanation
Explanation:
From left to right, the oxides across period 3;
i) Period 3 oxides all appear white in colour. They are all crystalline solids and their melting points decrease from left to right.
ii) The volatility of period 3 oxides increases from left to right across the periodic table
iii) The metallic oxides on the right hand side adopt giant ionic structures. Silicon oxide which is in the middle of the period forms a giant covalent structure. Oxides of other elements towards the right hand side form molecular oxide structures.
iv) The acidity of oxides of period 3 increases from left to right. Metals on the left hand side form basic oxides while non-metals on the right hand side form acidic oxides. The oxide of aluminium in the middle is amphoteric.
v) The oxides of period 3 elements do not conduct electricity. However, the metallic oxides on the lefthand side conduct electricity in molten state. The non-metallic oxides on the right hand side are molecular hence they do not conduct electricity under any circumstance.
Buffer sol that contain 1 mol NH4Cl and 1mol NH4OH per liter find PH
Answer: what
Explanation:
1.8 in to mm
Express your answer using two significant figures.
Answer:
46 mm.
Explanation:
Hello there!
In this case, according to the equivalence statements to convert from inches to centimeters, centimeters to meters and meters to millimeters, we can write:
2.54 cm = 1 in
100 cm = 1 m
1000 mm = 1 m
It is possible to set up the following conversion factor to obtain the required millimeters:
[tex]1.8in*\frac{2.54cm}{1in}*\frac{1m}{100cm} *\frac{1000mm}{1m} \\\\=46mm[/tex]
Best regards!
If water itself does not conduct electricity, then why is it dangerous to be in water during a
thunderstorm OR use electricity in a bathtub?
Electricity can flow through water (so don't swim with a toaster plugged in or at all)
When animals drink nectar from the flower and move the pollen is to___________________the flower?
Answer:
Pollinate, If i gave you the wrong answer, i'll improve my answer for you
Explanation:
pollination bc the animal rubs off the pollen to the other plant which causes to bloom better bc it comes from the other plant
Help me plz #10 would appreciate it
All animals make body heat. True or false?
Answer:
False
Explanation:
Some animals are cold blooded
Answer:
false
Explanation:
Calculate the root - mean - square speeds of helium atoms and nitrogen molecules in m/s at 25° C
Answer: a) root - mean - square speeds of helium atom is 43.1 m/s
b) root - mean - square speeds of nitrogen molecule is 16.29m/s
Explanation:
The formula used for root mean square speed is:
[tex]\nu_{rms}=\sqrt{\frac{3RT}{M}}[/tex]
where,
[tex]\nu_{rms}[/tex] = root mean square speed
R = gas constant = [tex]8.314J/Kmol[/tex]
T = temperature = [tex]25^0C=(25+273)K=298K[/tex]
M = atomic mass
a) root - mean - square speeds of helium atom [tex](He)[/tex]
[tex]\nu_{rms}=\sqrt{\frac{3\times 8.314J/Kmol\times 298K}{4g/mol}}=43.1m/s[/tex]
b) root - mean - square speeds of nitrogen molecule [tex](N_2)[/tex]
[tex]\nu_{rms}=\sqrt{\frac{3\times 8.314J/Kmol\times 298K}{28.02g/mol}}=16.29m/s[/tex]
Answer fast please?????????????
Answer:
option a. iron,copper, aluminium.
Consider the reaction when aqueous solutions of ammonium carbonate and chromium(III) chloride are combined. The net ionic equation for this reaction is:
Answer: [tex]3CO_3^{2-}(aq)+2Cr^{3+}\rightarrow Cr_2(CO_3)_3(s)[/tex]
Explanation:
Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.
The balanced molecular equation is:
[tex]3(NH_4)_2CO_3(aq)+2CrCl_3(aq)\rightarrow 6NH_4Cl(aq)+Cr_2(CO_3)_3(s)[/tex]
The equation can be written in terms of ions as:
[tex]6NH_4^+(aq)+3CO_3^{2-}(aq)+2Cr^{3+}(aq)+6Cl^-(aq)\rightarrow 6NH_4^+(aq)+6Cl^-(aq)+Cr_2(CO_3)_3(s)[/tex]
The ions which are present on both the sides of the equation are ammonium and chloride ions and hence are not involved in net ionic equation.
Hence, the net ionic equation is
[tex]3CO_3^{2-}(aq)+2Cr^{3+}\rightarrow Cr_2(CO_3)_3(s)[/tex]
What is the estimated life expectancy of tin reserves?
Answer:
chemical reaction hope this helps ;)
Explanation: