Ill in the blank with the correct number to balance the equation: ___KClO3 → 2KCl 3O2. (Enter only a whole number. )
Numerical Anwer Expected!
Anwer for Blank 1:
Answers
Correct number to balance the equation: ___KClO3 → 2KCl 3O2 is "2".
We obtain KCl and oxygen gas from the breakdown of potassium chlorate (KClO3).
1.5 moles of O2 gas and one mole of KCl are produced from one mole of KClO3.
Therefore, the response will be:
KCL)3 - - > KCL + 3/2 O2
The entire equation will be multiplied by two in order to transform the fractional coefficient to a whole number.
2X [ KCLO3 - - > KCL + 3/2 O2 ]
A balanced equation will therefore be:
2KCLO3 - - > 2KCL + 3 O2
KClO3's coefficient is therefore "2".
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Related Questions
what is the best description of the catalytic mechanism of gk? catalysis occurs through:
Answers
Answer:
The catalytic mechanism of glucokinase (GK) is still not fully understood, but it is thought to involve the following steps:
Glucose binds to GK in a specific pocket.
ATP binds to GK in a different pocket.
The two substrates are brought close together by GK.
A general acid-base catalyst in GK deprotonates the C6 hydroxyl group of glucose.
A nucleophilic attack by the C6-hydroxyl group of glucose on the α-phosphate of ATP takes place.
The reaction is completed by the release of ADP and glucose-6-phosphate.
GK is a very efficient catalyst, and it is thought that its efficiency is due to the following factors:
The specific binding of the substrates to GK creates a favorable orientation for the reaction to take place.
The presence of a general acid-base catalyst in GK speeds up the reaction by providing a proton to protonate the C6 hydroxyl group of glucose and a base to abstract a proton from the α-phosphate of ATP.
The close proximity of the substrates in GK allows the reaction to take place more easily.
GK is an important enzyme in the regulation of glucose homeostasis. It is the rate-limiting enzyme in the hepatic phosphorylation of glucose, and it plays a role in the regulation of insulin secretion.
Explanation:
Which of the following is an empirical formula?A.) P4O10B.) C2H4C.) H2O2D.) N2O
Answers
Answer:
N2O is an empirical formula
Explanation:
A.) P4O10 NO: Can be reduced to P2O5
B.) C2H4 NO: Can be reduced to CH2
C.) H2O2 NO: Can be reduced to H O
D.) N2O YES, the formula cannot be reduced any further.
which element has both metallic and nonmetallic properties?
Answers
Answer:
metalloid
Explanation:
What is the Law of Conservation of mass?
Answers
Answer: Mass is neither created nor destroyed
Explanation: Mass or matter cannot be created or destroyed even by chemical or physical changes/transformations
the half-life of carbon -11 is 20 min. How much of a 100 mg sample remains after 1.33 hours?
Answers
After 1.33 hours, approximately 3.125 mg of a 100 mg sample of carbon-11 remains.
The half-life of a radioactive substance is the time it takes for half of the sample to decay. In this case, the half-life of carbon-11 is 20 minutes. To determine the amount of carbon-11 remaining after 1.33 hours, we need to calculate the number of half-lives that have passed and the corresponding amount of remaining substance.
First, let's convert the given time of 1.33 hours to minutes:
1.33 hours * 60 minutes/hour = 79.8 minutes.
Next, we calculate the number of half-lives that have passed by dividing the total time by the half-life:
Number of half-lives = 79.8 minutes / 20 minutes = 3.99.
Since we cannot have a fraction of a half-life, we round down to the nearest whole number, which is 3.
Now, we can calculate the amount of remaining carbon-11 using the formula:
Amount remaining = Initial amount * (1/2)^(number of half-lives).
Amount remaining = 100 mg * (1/2)^3 = 100 mg * (1/8) = 12.5 mg.
Therefore, approximately 3.125 mg (1/8 of 12.5 mg) of the 100 mg sample of carbon-11 remains after 1.33 hours.
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When the organic compound C8H14O is burned in air (with oxygen) the products are carbon dioxide and water. Balance this reaction and indicate the value of the coefficient for oxygen.
Write your answer as a number - e.g., 3
Answers
The balanced chemical equation for the combustion of \(C_{8}H_{14}O\) is,
\(C_8H_{14}O + 11O_2 \rightarrow 8CO_2 + 7H_2O\)
The coefficient for oxygen is 11.
The balanced chemical equation for the combustion of a hydrocarbon in air always involves oxygen as the oxidizing agent. In this case, \(C_{8}H_{14}O\) is the hydrocarbon that is being burned in the presence of oxygen (O₂) to form carbon dioxide (CO₂) and water (H₂O) as the products.
To balance the equation, we need to make sure that the number of atoms of each element is the same on both sides.
\(C_8H_{14}O + 11O_2 \rightarrow 8CO_2 + 7H_2O\)
Now the equation is balanced, with 8 carbon atoms, 14 hydrogen atoms, and 23 oxygen atoms on both sides. The coefficient for oxygen is 11.
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how to balance O2 please help
Answers
Answer:
How to balance the oxygen atoms.
Add a coefficient of 5 to the oxygen molecule on the left side of the equation. You now have 10 oxygen atoms on each side.
C3H8 + 5O2 --> 4H2O + 3CO2.
The carbon, hydrogen, and oxygen atoms are balanced. Your equation is complete.
Which statement describes the difference between metallic bonds and Van der Waals forces? O
A. Metallic bonds hold nonpolar molecules together, while Van der Waals forces hold positive ions and freely moving valence electrons together. O
B. Metallic bonds cause an attraction between partially positive and partially negative atoms, while Van der Waals forces hold nonpolar molecules together
C. Metallic bonds hold metal atoms and freely moving valence electrons together, while Van der Waals forces hold nonpolar molecules together
OD. Metallic bonds hold metal atoms and freely moving valence electrons together while Van der Waals forces hold atoms together when they share valence electrons.
Answers
Answer: C
Explanation: Just took the test on a.p.e.x.
Answer:
O C. Metallic bonds hold metal atoms and freely moving valence electrons together, while Van der Waals forces hold nonpolar molecules together.
Explanation:
How many Mn atoms are found in the following compound?
2MnO4
Answers
Answer:
2
Explanation:
Given compound:
2MnO₄
This means that the compound contains:
2 × 1 Mn = 2 Mn2 × 4 O = 8 O\(\rule[225]{225}{2}\)
Hope this helped!
~AH1807How many bonds does argon group viii form
A. 0
B. 3
Answers
Answer:
option A is correct
Explanation:
argon belongs to noble gas which doesnt form any type of chemical bond
The number of bonds that will argon group will form is zero, as it already have octet configuration.
What is noble gas?Nobles gases are the most stable gases present in the periodic table and electronic configuration of valence shell of these gases are always complete or stable i.e. 2 or 8.
Argon is a noble gas, whose atomic number is 18 and valence shell has 8 electrons. As we know that atoms will take participate in bond fomation to get the stable state and fulfilled valency, so argon will not form any bond as it is already in stable state.
Hence argon will form zero bonds.
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The volume of gas in a balloon is 1.90L at 21.0°C.The balloon is heated, causing it to expand to a volume of 5.70L. what is the new temperature of the gas inside the balloon?
Answers
Answer: The new temperature is \(63^{o}C\).
Explanation:
Given: \(V_{1}\) = 1.90 L, \(T_{1} = 21.0^{o}C\)
\(V_{2}\) = 5.70 L, \(T_{2} = ?\\\)
Formula used to calculate new temperature is as follows.
\(\frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}\)
Substitute the values into above formula as follows.
\(\frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}\\\frac{1.90 L}{21.0^{o}C} = \frac{5.70 L}{T_{2}}\\T_{2} = 63^{o}C\)
Thus, we can conclude that the new temperature is \(63^{o}C\).
What would be a correct unit of measurement for velocity?
Group of answer choices
Meters/second North
Meters/second
Answers
Answer:
Explanation:
Meter/ Second
Answer:
Meter/Second North!Brainliest pls :)
Explanation:
When an atom gives up or accepts an extra electron, so that the number of protons no longer is equal to the number of electrons, the result is O an isotope O a neutron .O an ion O a mineral
Previous question
Ne
Answers
An Ion.
An Ion has the same number of protons but loses or gains electrons, which make it either positively or negatively charged.
An ion that had lost electrons, because they need a full outer shell and perhaps they had too many electrons, and given to another atom becomes positively charged. This is because electrons are negatively charged, losing them makes the whole atom positive. Since there are now more positive protons than negative electrons.
But why don't atoms have a charge?
Because the number of electrons and protons are the same so, they cancel each other out and have a neutral charge.
So, if an atom accepts another electrons, maybe to fill in an outer shell to make it positive. It will become negatively charged as it now has more electrons than protons.
Can someone pls help me with this its due in 20 minutes.
Answers
Answer:
15. The velocity of a sound wave is affected by two properties of matter: the elastic properties and density.
16. The greater the density of a medium, the slower the speed of sound. This observation is analogous to the fact that the frequency of a simple harmonic motion is inversely proportional to m, the mass of the oscillating object.
17. Temp °C 0 m/s2 m/s
50 360.51 361.62
18. Molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly. The speed of sound in room temperature air is 346 meters per second. ... The speed of sound is also affected by other factors such as humidity and air pressure.
A solution prepared by dissolving 180.0 mg of a sugar (a molecular compound and a nonelectrolyte) in 1.00 g of water froze at -1.86°C. What is the molar mass of this sugar? The value of Kf is 1.86°C/m._______ g/mol
Answers
Answer:
180 g/mol.
Explanation:
What is given?
ΔT = [0 - (- 1.86 )] °C = 1.86 °C.
i = 1 (for a nonelectrolyte).
Kf = 1.86 °C/m.
Step-by-step solution:
To solve this problem, we have to use the boiling point elevation formula, which is the following:
\(\Delta T=i\cdot m\cdot K_f.\)Where ΔT is the change in boiling point, i is the Van't Hoff factor, m is the molality of solution, and Kf is the molal boiling point constant.
Let's calculate the molality with the given data:
\(m=\frac{\Delta T}{i\cdot K_f}=\frac{1.86\text{ \degree C}}{1\cdot1.86\text{ }\frac{\degree C}{m}}=1\text{ m.}\)1 m is the same that 1 mol/kg. As we have 1.00 g of water and 180.0 mg of the sugar, we can multiply 1 mol/kg by the mass of water. Remember that 1 kg equals 1000 g, so 1.00 g is the same that 0.001 kg:
\(1\text{ }\frac{mol}{kg}\cdot0.001\text{ kg=0.001 mol.}\)Remember that the units of the molar mass is in g/mol, and 1 g equals 1000 mg, so 180.0 mg is the same that 0.18 g. If we divide 0.18 g by 0.001 mol, we will obtain the molar mass of the sugar, which would be:
\(\begin{gathered} Molar\text{ mass=}\frac{0.18\text{ g}}{0.001\text{ mol}}, \\ Molar\text{ mass=180}\frac{g}{mol}. \end{gathered}\)The answer would be that the molar mass is 180 g/mol.
A solar energy company learns of several recent cyber-attacks targeting other companies in their industry and realizes they could be next. The company initiates an analysis to weigh the measures needed to counter the potential threat and minimizing the impact to their business in case those are exploited. Which security principle is illustrated in this example?
Answers
Which physical property is used to be Indentify the ability to dissolve
Answers
Answer:
solubility
Explanation:
solubility is a measure of how much a substance will dissolve in a solvent.
which statement supports the main ideas of the law of conservation of mass? responses the reactants in a chemical reaction are the same as the products. the reactants in a chemical reaction are the same as the products. the masses of the reactants are less than the masses of the products. the masses of the reactants are less than the masses of the products. the masses of the reactants are equal to the masses of the products. the masses of the reactants are equal to the masses of the products. the masses of the reactants are greater than the masses of the products.
Answers
Answer:
the first statement is correct...
it only supports the main idea of the law of conservation of mass...
hope I can help you...
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.
A scientist wants to find the percent of teens that like the taste of "brand X" lemonade over "brand Y" lemonade. She conducts a taste test of 500 teenagers. She gives each teen a bottle of lemonade with the labels showing the brand of each lemonade. She asks each teenager to taste each brand after drinking water in between. She finds that 50% of teens like brand X and 50% like brand Y lemonade. Why are the results of the survey most likely unreliable?
Answers
Answer:
She gave them bottles with labels showing the brands
Explanation:
the teens could have been biased due to knowing the brand. It would have been more reliable if the label was covered or removed.
Directions:
Read the question carefully.
Write your response in at least three (3) sentences.
Use the HINT and SENTENCE STARTERS to help you with the response.
Question:
Imagine you're cooking dinner for a few of your friends. You decide to make a salad with homemade dressing. Why do you need to think about the polarity of the different ingredients in your salad dressing in order for it to turn out well? [HINT: "Like dissolves like"]
Sentence Starters:
- For the ingredients of a salad dressing to mix well, they should either...
- If both polar and nonpolar ingredients should be used, then they ...
Answers
The reason I have to think about the polarity of the different ingredients in my salad dressing in order for it to turn out well is simply because so that the soluble ingredients can dissolve completely and have a nice taste.
What is polarity?Polarity can simply be defined as a state of an atom or a molecule inherent in a body that exhibits opposite properties or powers in opposite parts or directions.
So therefore, the reason I have to think about the polarity of the different ingredients in my salad dressing in order for it to turn out well is simply because so that the soluble ingredients can dissolve completely and have a nice taste.
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How many grams are there in 7.50 x 1023 atoms of S
Answers
Explanation:
No of moles=7.50×10²³/6.023×10²³=1.245 moles
Grams=1.245×32=39.84grams
What occurs during a solar eclipse?
Earth is closest to the Sun.
There are small tides across Earth.
The moon’s shadow falls on Earth.
The moon is covered in Earth’s shadow.
Answers
Answer:
Explanation:
option C is correct
Answer:
The moon is covered in Earth’s shadow.
Explanation:
When the moon goes behind the earth to the shadow it becomes a solar eclipse.
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Aluminum has a density of 2.70 g/mL. A sample of aluminum weighs 67.5 g. If this sample is put into a graduated cylinder that has 35 mL, what volume will the water rise to?
Answers
Answer:
60 ml
Explanation:
Now, we know that density = mass/volume
Mass of aluminium = 67.5 g
volume of aluminium =?
density of aluminium = 2.70 g/mL
volume of aluminium = mass/density = 67.5/2.70 = 25 ml
Since volume of water in the cylinder = 35 ml
The water rises to ; 35 ml + 25 ml = 60 ml
1 how many caffeine molecules (c8h10n4o2) are in 3 moles of c8h10n4o2?
Answers
There are 1.81 × 10^24 caffeine molecules (C₈H₁₀N₄O₂) in 3 moles of C₈H₁₀N₄O₂.
One mole of a substance has 6.022 × 10²³ particles. This number is known as Avogadro's number. The molecular mass of caffeine is 194.19 g/mol. Thus, 3 moles of caffeine have a mass of 3 × 194.19 = 582.57 g. Moles = Mass/Molecular mass = 582.57 g / 194.19 g/mol = 3 moles. 1 mole of caffeine contains 6.022 × 10²³ molecules. Thus, 3 moles of caffeine contain 3 × 6.022 × 10²³ = 1.81 × 10²⁴ molecules.
Caffeine has the chemical formula C₈H₁₀N₄O₂. Therefore, 1 molecule of caffeine contains 8 carbon atoms, 10 hydrogen atoms, 4 nitrogen atoms, and 2 oxygen atoms. Therefore, the total number of atoms in one molecule of caffeine = 8 + 10 + 4 + 2 = 24. Hence, 3 moles of caffeine will contain 1.81 × 10²⁴ caffeine molecules x 24 atoms/molecule = 4.34 × 10²⁵ atoms.
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5. (10 Points) Chlorine gas is in a container that has a volume of 25.0 mL at
40°C. What volume will it occupy at 80°C?
PLS HELP
Answers
Answer:120.0mL
Explanation:
How are reflecting telescopes different from refracting telescopes?
Answers
Reflecting telescopes are preferred for scientific research because they are better suited for gathering large amounts of light and producing high-quality images. However, refracting telescopes are still popular for amateur astronomers and for viewing objects on Earth.
Reflecting telescopes are different from refracting telescopes because reflecting telescopes use mirrors, whereas refracting telescopes use lenses. The reflecting telescope was invented in 1668 by Sir Isaac Newton, and it has since become one of the most popular types of telescopes.
Reflecting telescopes use a mirror to gather and focus light, while refracting telescopes use a lens to do the same thing. Reflecting telescopes can be made much larger than refracting telescopes because it is easier to make large mirrors than it is to make large lenses. The mirror in a reflecting telescope is placed at the back of the telescope, and it gathers and reflects light back to a secondary mirror, which then reflects the light to the eyepiece. The eyepiece is where the observer looks through the telescope.In contrast, the lens in a refracting telescope is placed at the front of the telescope, and it gathers and bends light as it passes through. The lens focuses the light onto an eyepiece at the back of the telescope. Refracting telescopes are generally smaller than reflecting telescopes because of the difficulty of making large lenses.
Another difference between reflecting and refracting telescopes is the way they are constructed. Reflecting telescopes have a simple tube that houses the mirrors and eyepiece, while refracting telescopes have a more complex design with a long tube that contains the lens and eyepiece.
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What formula represents the compound formed from barium and hypochlorite?
Answers
Answer:
Ba(ClO)₂
Explanation:
The compound formed from barium and hypochlorite is barium hypochlorite, and its chemical formula is Ba(ClO)₂.
A chemical element with the atomic number 56 is barium (Ba). It belongs to the alkaline earth metal family and when it forms compounds, it has a 2+ charge.
This indicates that two electrons must be rapidly lost by barium in order to produce a stable electron configuration.
One chlorine atom (Cl) and one oxygen atom (O₂) combine to form the anion hypochlorite (ClO-) (O). The hypochlorite ion has a net charge of -1 due to the 1-charged oxygen atom and the 1-charged chlorine atom.
The 2+ charge of barium interacts with the 1- charge of the hypochlorite ion throughout the reaction to create a neutral molecule.
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Perform the following calculations and express the answers in
scientific notation.
a. 4.2 x 104 kg + 7.9 x 10³ kg
b. (5.23 x 106 um) (7.1 x 10-² μm)
c. 5.44 x 107 g + 8.1 x 104 mol
d. 8.40 x 105 km - 3.1 x 105 km
Answers
The answer of the calculations above in scientific notation are a=8.3 ×10³, b= 3.9 × 10^¹um, c= 1.4 × 10³gmol, d= 5.6× 10²km
Calculation to expressionsIn calculation of various expressions, the results can be expressed in a scientific notation which is a way to compress cumbersome figures.
(4.2 x 104 kg) + (7.9 x 10³ kg)4.2 × 104 = 436.8
7.9 × 10³ = 7900
436.8 + 7900 = 8,336.8
The scientific notation= 8.3 ×10³kg
(5.23 x 106 um) (7.1 x 10-² μm)5.23 x 106 um = 554.38um
554.38 × 7.1 = 3,936.1
3,936.1 × 10^-²
3.9 × 10³ × 10^-²= 3.9 × 10^¹um
The scientific notation= 3.9 × 10^¹um
5.44 x 107 g + 8.1 x 104 mol5.44 x 107 g = 582.08g
8.1 x 104 mol = 842.4 mol
582.08g+ 842.4 mol = 1,424.48
The scientific notation = 1.4 × 10³gmol
(8.40 x 105 km) - (3.1 x 105 km)8.40 x 105 km = 882km
3.1 × 105 = 325.5km
882km - 325.5km = 556.5
The scientific notation = 5.6× 10²km
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Sodium carbonate (Na2CO3) has a molar mass of 105. 99 g/mol. How many molecules of sodium carbonate are contained in a 34. 1 g sample?
Answers
There are approximately 1.93 × \(10^{23\) molecules of sodium carbonate in a 34.1 g sample.
The molar mass of sodium carbonate (\(Na_2CO_3\)) is 105.99 g/mol.
To calculate the number of molecules present in a 34.1 g sample, we can use the following formula:
Number of moles of the compound (n) = Mass of the compound (m) / Molar mass of the compound (M)
We can use this formula to calculate the number of moles of sodium carbonate in the given sample:
n = m / M = 34.1 g / 105.99 g/mol = 0.321 moles
Now, we need to calculate the number of molecules of sodium carbonate that are present in this sample.
We can use Avogadro's number (6.022 × \(10^{23\)) to convert from moles to molecules:
Number of molecules = Number of moles × Avogadro's number
= 0.321 moles × 6.022 × \(10^{23\) molecules/mol
= 1.93 × \(10^{23\) molecules
Therefore, there are approximately 1.93 × \(10^{23\) molecules of sodium carbonate in a 34.1 g sample.
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