Answer: E. Combustion
Explanation:
D-ribulose + Dioxygen = Carbon Dioxide + Water
How much heat must absorbed by the reaction system to convert 100g of NaNO3 into NaHSO4(s)?
Answer:
about 4.8kJ
Explanation:
There is some missing information in the question given.
For use to determine the amount of heat that must be reacted in the system to convert 100g of NaNO₃ into NaHSO₄(s);
Then, we need to consider the following reaction between sodium nitrate (NaNO₃) and sulfuric acid (H₂SO₄):
[tex]\mathbf{NaNO_{3(s)}+ H_2SO_{4(l)}\to NaHSO_{4(s)}+HNO_{3(g)} \ \ \ \ \ \Delta H = 21.2 \ kJ}[/tex]
From the above reaction, 84.99 gm of NaNO₃ reacted with H₂SO₄ which is converted into NaHSO₄ thereby absorbing 21.2 kJ amount of heat.
This implies that; if 84.99 gm of NaNO₃ absorbs 21.2 kJ amount of heat.
1 gm of NaNO₃ will absorb = [tex]\mathsf{\dfrac{21.2}{84.99} \ kJ \ heat}[/tex]
= 0.2494 kJ amount of heat.
∴
100 g of NaNO₃ will absorb [tex]= \mathsf{\dfrac{21.2}{84.99} \times 100 \ kJ \ heat}[/tex]
= 24.94 kJ amount of heat.
Therefore, we can conclude that the amount of heat that must be absorbed by the reaction system to convert 100g of NaNO3 into NaHSO4(s) is 24.94 kJ.
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Which of the following elements has the lowest ionization energy?
Question options:
A)
Hydrogen
B)
Beryllium
C)
Argon
D)
Helium
Answer:
A
Explanation:
It has the lowest ionisation energy
Answer:
Beryllium
Explanation:
why do atoms combine to form compund?
Answer:
See below
Explanation:
The following reasons tell why atom combine to form compounds:
1) They want to follow octet or duplet rule and attain the noble gas configuration.
2) They combine to form compounds because of the electrostatic attraction between them.
3) They form compounds to lower their energy and to become stable.
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807What is the volume of 45.6 g of silver if the density of silver is 10.5 g/mL?
a. 0.23 mL
b. 4.34 mL
c. 479 mL
At a certain grocery store a 0.500 pound container of ground cinnamon cost $6.98 (excluding tax). Cinnamon has a density of 0.560 g/Ml. How much would 500.0 mL of cinnamon cost?
Answer:
The cinnamon cost would be "$8.62". A further explanation is given below.
Explanation:
Cinnamon's density,
= 0.560 g/ml
On converting it into g, we get
= [tex]0.560\times 500[/tex]
= [tex]280 \ g[/tex]
Cinnamon's volume,
= 500 ml
As we know,
1 pound = 435.592 g
Now,
The cost pf cinnamon per pound will be:
= [tex]\frac{6.98}{0.5 \ pound}[/tex]
= [tex]13.96[/tex] ($) per pound
So,
Cinnamon's cost will be:
= [tex]250 \ g\times \frac{1 \ pound}{435.592 \ g}\times \frac{13.96}{1 \ pound}[/tex]
= [tex]8.62[/tex] ($)
Liquid hexane e (CH 3 (CH 2 ) 4 CH 3 ) will react with gaseous oxygen (O 2 ) to produce gaseous carbon dioxide (CO 2 ) and gaseous water (H 2 O) . Suppose 2.59 of hexane is mixed with 2.9 of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits .
Answer:
Explanation:
Hi I'm so sorry hope you have a good day
When frictional forces do work on an object or mechanical system, what form of energy is always produced?
A simplified version of the Periodic Table of the elements is provided
When moving across a row in the periodic table, which of the following increases?
Oday, you will observe drops of liquid water and compare them to drops of liquid isopropanol, noting whether either liquid evaporates. Given that the energy transferred in from the air will be the same for both liquids, make a prediction about whether both drops or only one drop will evaporate within five minutes. Explain your prediction below.
Answer:
Liquid isopropanol.
Explanation:
Liquid isopropanol will evaporate earlier than water because the boiling point of isopropanol is less than water. That liquid which have high boiling point require more heat energy for change into vapor state as compared to those liquids that has low boiling point. The isopropanol has boiling point i.e. 82.5 °C while on the other hand, water has boiling point i.e. 100 °C so we can say that isopropanol will evaporate first.
The liquid that will be the first to evaporate within 5 minutes is; Liquid Isopropanol
We have the 2 liquids as;
Liquid Isopropanol
Liquid water
Now, since we are dealing with the one that will evaporate within five minutes, we need to know their boiling points.
From online research;
Boiling point of liquid isopropanol is 82.5°C
Boiling point of liquid water is 100°C
Now, we are told that the same energy is transferred for both liquids. However, boiling point of the liquid with the lower boiling point will be achieved first and as a result will evaporate first since the next stage after boiling point is evaporation of steam.
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Jason took 6 hours to travel 540 km. For the first 140 km, he took 2 hours.
What was his average speed during the first two hours? ___ km/h
How much distance did he cover in the last four hours of his journey? ___ km
What was his average speed for the rest of the journey? ___ km/h
would the pressure exerted by the gas in the tank would increase if the scuba tank were to increase in temperature?
Answer:
In fact, a full scuba tank will gain about 5-6 psi for every degree of temperature increase. This is one reason that full tanks should not be left in a hot trunk of a car. A tank filled to 3000 psi could easily reach 3500 psi if the temperature of it increased substantially.
In which of the following case would the rusting of iron nail be the slowest ? thanks !
If any atom loses 1 electron it has a charge of
Which of the following pH values is the most acidic? *
a. 1
b. 3
c. 5
d. 14
what's is the mass of 1 atom of gold
Answer:
197.0 amu
Explanation:
Which of the following aqueous solutions would boil at the highest temperature?
A) 100 g of NaCl in 125 g of water
B) 100 g of NaCl in 250 g of water
C) 100 g of NaCl in 500 g of water
D) 100 g of NaCl in 1000 g of water
What has 1 silicon atom surrounded by 4 oxygen atoms?
Silicon Oxide would probably be it.
Aluminum cookwar cannot be used in cooking acidic food .Why?It is possible to clean an aluminium pot using an oven cleaner contaning sodium hydroxide?Explain.
Answer:
See explanation
Explanation:
Aluminium is an amphoteric metal. This means that it reacts with both acids and bases. This property of aluminium is important in the discussion below.
Aluminium cookers can not be used to cook acidic food because it will react with the food and this is not good both for the food and the cooker.
Also, It is not possible to clean an aluminium pot with sodium hydroxide because the sodium hydroxide will react with the pot yielding hydrogen gas since aluminium is amphotheric as follows;
2Al + 2NaOH + 2H2O → 2NaAlO2 + 3H2
Aluminum has been the metal of group 13 of the periodic table. Aluminum has been reacting with capability with both acids and bases.
A. The acidic food has not been cooked in the aluminum wares with the ability of Aluminum to react with the acid of the food and change the chemical composition.
B. The aluminum can react with the bases and acids. The reaction of aluminum with NaOH has resulted in the liberation of hydrogen gas with the formulation of sodium tetrahydroxoaluminate.
The compound has been easy to clean, and thus NaOH solution is used for cleaning and etching of aluminum.
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Select the most likely product for this reaction:
Upper L i upper O upper H (a q) plus upper H upper N upper O subscript 3 (a q) right arrow question mark.
CO2(g) + H2O(l)
LiNO3(aq) + H2O(l)
LiNO3(aq) + H2(g) + O2(g
Answer:
The answer is B- LiNO3(aq)+H2O(I)
Explanation:
I just did the assignment also UNUS ANNUS
Answer:
b
Explanation:
13. What is the Kinetic Energy of a 6 kilogram rock rolling down a hill at 3 meters per second?
-please help asap! also itsnot chemistry but theres no choice for science-
Answer:
27J
Explanation:
kinetic energy is1/2mv^2An organism's _______ describes its genetic composition. An organism's _______ describes its appearance or observable characteristics.
a) phenotype; genotype
b)heredity; species
c)species; heredity
d) genotype; phenotype
A sample of carbon dioxide gas (CO2) contains 8.551 x 1025 molecules. How many moles of carbon dioxide does this represent?
Answer:
142.0 moles CO₂
Explanation:
To answer this question, we first need to know what a mole is. A mole represents [tex]6.022 \cdot 10^{23}[/tex] of something, and in this case, that something is molecules.
So, to convert [tex]8.551 \cdot 10^{25}[/tex] molecules into moles, we need to use the conversion factor [tex]1=\frac{6.022\cdot 10^{23} \text{molecules} }{ \text{1 mole}}[/tex].
Doing so (using dimensional analysis) gives us:
[tex]8.551 \cdot 10^{25} \text{ molecules } \cdot \frac{\text{1 mole}}{ 6.022\cdot 10^{23} \text{ molecules} } = \frac{8.551 \cdot 10^{25}}{ 6.022\cdot 10^{23}} \text{ moles CO}_2 = \\ \\ 141.996 \text{ moles CO}_2 = \boxed{142.0 \text{ moles CO}_2 }[/tex]
a moon phase that looks like a full circle is called.
Answer:
a full moon or new moon
Explanation:
4.
Which energy transformation takes place when using a power drill?
A.
mechanical to chemical
В.
electrical to mechanical
с.
chemical to electrical
D
heat to mechanical
Answer:
the answer is B
Explanation: Trust me I took the test
The correct option is option B which is electrical to mechanical.
When using a power drill, the energy transformation that occurs is from electrical energy to mechanical energy. The power drill is powered by electricity, which is converted into mechanical energy to rotate the drill bit and perform the desired work. The electrical energy is converted into the mechanical energy of rotational motion.
Hence, the correct option is option b
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eye is an organ why????
Answer:
The eye is an organ that detects light and sends signals along the optic nerve to the brain.
Explanation:
In humans, the eye is a valuable sense organ that gives us the ability to see. It allows for light perception and vision, including the ability to differentiate between colors and depth.Although small in size, the eye is a very complex organ. The eye is approximately 1 inch wide, 1 inch deep and 0.9 inches tall. The human eye has a 200-degree viewing angle and can see 10 million colors and shades. Humans have two eyes which allows us to have better depth perception and binocular stereopsis.
Hope this helps
we literally are what we eat
Answer:
ik right
Explanation:
What causes one water molecule to stick to another water molecule?
Answer:
Hydrogen Bonds Make Water Sticky
Explanation:
This sticking together of like substances is called cohesion. Depending on how attracted molecules of the same substance are to one another, the substance will be more or less cohesive. Hydrogen bonds cause water to be exceptionally attracted to each other. Therefore, water is very cohesive.
Need help with this (Chemistry)
Answer:
State is shown inside the parenthesis.
s is for solid
aq is for aqueous solutions
l for liquid
What occurs as energy is transferred through a wave?
A.)Water particles are set in a circular motion.
B.)Water particles are pulled backwards by the wind.
C.)Water particles are set in a vertical motion.
D.)Water particles are pushed forward by the wind.
Answer:
a,water particles are set in a circular motion
Answer:
When energy is transferred through a wave it's water particles are set in a circular motion. The answer is A, I hope this helps you.
what is the molecular shape of N2O2?
Answer:
If you're just looking at the Lewis Structure from the perspective of the octet rule, it does appear that the structure is correct. Dinitrogen always has a lone pair of electrons which could conceivably be used for dative bonding as you suggest. So from that perspective there appears to be nothing wrong at all - other than that it doesn't exist in nature in this way.
Explanation:
