Answer:
Moles of NaNO2 = 0.158
Moles of HNO2 final = 0.098
Explanation:
Given
Moles of HCl = 12
Moles of HNO2 = 0.11
Moles of NaNO2 = 0.170
HCl +NaNO2 --> HNO2 + NaCl
1 mole of HCl react with one mole of NaNO2 to produce 1 mole of NaCl and 1 mole of HNO2
Moles of NaNO2 = 0.17 - 0.012 = 0.158
Moles of HNO2 final = 0.11 - 0.012 = 0.098
A simplified global food web is shown in the diagram above. If human pollution causes the removal of zooplankton from the food web, how many different organisms in this food web would be affected?
Answer:
I will still answer your question!
Explanation:
There is no picture and no I will not steal your points, I will help you! :) Let me know when the picture is uploaded!
A balloon filled with air has a volume of 4.24 liters at 23.00°C. If the balloon is cooled at a constant pressure to 5.00°C, what is the new volume?
Balance the following equation using oxidation Numbers. Show all steps.
KMnO4(aq)+ H2SO4(aq) +H2O2(l)-> K2SO4(aq) +MnSO4(aq) +
02(g) + H2O(l)
2 KMnO4 (aq) + 5 H2O2 (aq) + 3 H2SO4 (aq) → 5 O2 (g) + 2 MnSO4 (aq) + K2SO4 (aq) + 8 H2O (l)
According to Galileo, which of the following best explains the horizontal
motion of a projection? *
Inertia
O Impetus
O Gravity
Momentum
Answer:
Inertia
Explanation:
According to Galileo, the motion of a projectile can be described according to two principles.
Firstly, he argued that when the projectile is fired, it moves in straight line until it looses its impetus and falls to the ground.
The horizontal motion of the projectile is explained by the theory of inertia. According to Galileo, the two independent motions of the projectile all together leads to a mathematical curve which completely describes the motion of a projectile.
2. How can you relate the molecular geometries of these hydrides to the identities of the central atoms in these compounds
Answer: Hello, please, the question is not complete. Attached is the complete question.
Answer:
1. Their bond strength
2. Their acidic strength
3. the size of their central atom
Explanation:
CH4 and Si4 compounds belong to the same molecular geometry and group and they do have the same bond angle and they do not contain lone pair and they have no repulsion. we can conclude that they are from the carbon family.
NH3 and PH3 have the same molecular geometry an bond angle which we can say they are 3 bond and 1 lone pair. they are from the nitrogen family and lone pair.
NOTE: Bond angle shows that first atomically is f second period and PH3 is from third period (This is the Drego rule)
HF and HCL have the same molecular geometry and bond angle.
Complete and balance equation KI(aq)+BaS(aq)→
The balanced reaction equation is; 2KI(aq)+BaS(aq)→ K2S(aq) + BaI2(aq)
What is equation?A chemical equation shows the conversion of reactants into products. Recall that in a chemical reactions, reactans interact with each other to yield products.
For the reaction we have in the question,the complete reaction equation is; 2KI(aq)+BaS(aq)→ K2S(aq) + BaI2(aq)
Learn more about reaction equation; https://brainly.com/question/16921139
predict the major and minor products of the reaction. name the products using systematic names. ch3ch=ch2+h2o-->h+
Answer:
major will be propan-2-ol
minor will be propan-1-ol
what is the NGOs location in Nigeria
How much energy would it take to freeze 12.5 g of water?
The amount of energy needed to freeze 12.5 grams of water into ice is equals to 14.295 kilo joules.
How do we calculate energy?Energy required to freeze water will be calculated by using the following equation as:
Q = mcT, where
m = mass of water = 12.5g = 0.0125kg
c = specific heat of water = 4.187 kJ/kg.K
T = temperature to freeze = 0 degree C = 273.15 K
On putting values we get,
Q = (0.0125)(4.187)(273.15)
Q = 14.295 kJ
Hence required amount of energy is 14.295 kJ.
To know more about absorbed energy, visit the below link:
https://brainly.com/question/26306578
How many moles of lithium nitrate are theoretically produced if we start with 3.0 moles of Ca(NO3)2 and 3.0 moles of Li3PO4? Reaction: 3Ca(NO3)2 + 2Li3PO4 → 6LiNO3 + Ca3(PO4)2
Answer:
6.0 mol LiNO₃
Explanation:
3Ca(NO₃)₂ + 2Li₃PO₄ → 6LiNO₃ + Ca₃(PO₄)₂First we need to determine which reactant is the limiting reactant:
We calculate with how many Ca(NO₃)₂ moles would 3.0 moles of Li₃PO₄ react, using the stoichiometric coefficients of the reaction:
3.0 mol Li₃PO₄ * [tex]\frac{3molCa(NO_3)_2}{2molLi_3PO_4}[/tex] = 4.5 mol Ca(NO₃)₂There are not as many Ca(NO₃)₂ moles, so Ca(NO₃)₂ is the limiting reactant.
Using the number of moles of the limiting reactant, we calculate how many moles of LiNO₃ would be formed:
3.0 mol Ca(NO₃)₂ * [tex]\frac{6molLiNO_3}{3molCa(NO_3)_2}[/tex] = 6.0 mol LiNO₃What is the probability that each candidate has of being the club’s president?
there is an absence of presence of variables:(
Answer:
I HOPE THIS HELPS
Explanation:
30 POINTS! PLEASE HELP!! WILL GIVE BRAINLIEST
----- Will report you if you comment for just the points -----
Identify the number of electrons each of the following atoms needs to gain or lose to have a stable outer electron configuration:
Sulfuric acid:
Calcium nitrate:
Sucrose:
Ammonium phosphate
Answer:
Sulfuric acid (American spelling) or sulphuric acid (Commonwealth spelling), also known as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with molecular formula H2SO4. It is a colorless, odorless and viscous liquid that is miscible with water.
Calcium nitrate is produced by applying nitric acid to limestone and then adding ammonia. It is known as a double salt, since it is comprised of two nutrients common in fertilizers which are high in sodium. The processed result also looks crystallized like salt.
Sucrose is common sugar. It is a disaccharide, a molecule composed of two monosaccharides: glucose and fructose. Sucrose is produced naturally in plants, from which table sugar is refined. It has the molecular formula C₁₂H₂₂O₁₁.
Explanation:
BRO YOU CAN TRUST ME XD ♥️♥️
Cells take in small, energy-rich molecules from food. These molecules include sugar molecules. Cells use the molecules in a long series of chemical reactions. These reactions are known together as cellular respiration. Cellular respiration breaks down energy-rich molecules to form different molecules. This process also releases energy. Which of the following statements are true about cellular respiration? Select all that apply.
1.Cellular respiration occurs inside cells. 2.Cellular respiration releases energy. 3.Cellular respiration involves many chemical reactions.
4.Cellular respiration produces sugar molecules.
Answer:
1,2, and 3 are correct.
Explanation:
1 is true because cellular respiration begins in the cytoplasm of a cell. 2 is true because cellular respiration releases energy aerobically which uses glucose and oxygen or anaerobically which just uses glucose. Either way, energy is being released. 3 is true, I don't know how to explain why. Just keep the cellular respiration equation in mind, (C6H12O6 + 6O2 → 6CO2 + 6H2O + Chemical Energy (in ATP)), the chemical reactions are basically summed up into an equation. Hope that helped.
Which of the metals would reduce an iron ion
F
Fe
Cr
Cu
Ag
Sn
Answer:
Cu
Explanation:
Copper since it is more reactive than Iron. Hence, it can easily displace ions in an iron based compound.
Write the balanced COMPLETE ionic equation for the reaction when aqueous NiCl₂ and aqueous Na₂S are mixed in solution to form solid NiS and aqueous NaCl. If no reaction occurs, simply write only NR.
Answer:
Explanation:
The chemical reaction of the well-balanced equation is as follows:
[tex]\mathbf{2NiCl_{2(aq)}+2Na_2S_{(aq)} \to 4NaCl_{(aq)}+2NiS_{s}}[/tex]
The aforementioned reaction's ionic equation is:
[tex]\mathbf{2Ni^{2+}_{(aq)}+4Cl^-_{(aq)}+ 4Na^+_{(aq)}+2S^{2-}_{(aq)} \to 4Na^+_{(aq)}+4Cl^-_{(aq)}+2NiS_{(s)}}[/tex]
From above; Na⁺ and Cl⁻ appear on both sides;
Hence, the net ionic equation is:
[tex]\mathbf{2Ni^{2+}_{(aq)}+2S^{2-}_{(aq)} \to 2NiS_{(s)}}[/tex]
a distillation column is a process unit in which a feed mixture is separated
A distillation column is a process unit in which a feed mixture is separated by multiple partial vaporizations.
What is distillation?It should be noted that distillation simply means a process that has to do with the conversion of liquid into vapor.
In this case, distillation column is a process unit in which a feed mixture is separated by multiple partial vaporizations.
Learn more about distillation on:
brainly.com/question/24553469
#SPJ6
HURRY! Carbon and oxygen combine to form carbon dioxide. What are the products, or what is the product, in this chemical reaction?
-carbon and oxygen
-carbon dioxide
-carbon only
-oxygen only
Answer:
Carbon dioxide.
Explanation:
Hope this will help
[1] Mass of salt (g) 2.005 1.993 [2] Volume of DI water (mL) 49.8 50.0 Mass of DI water (g) [3] Temperature of DI water (°C) 23.4 23.5 [4] Temperature of mixture after dissolution (°C) 20.4 30.9 Temperature difference (°C) -3 7.4 [5] Total mass in reaction (g) 2.1 2.0 Total moles reacted (mol) .026 Total heat of the reaction (cal) [6] Enthalpy of solution ΔHsolution (cal/mol)
The reaction between hydrogen ion and hydroxide ion will be as follows.
so, ratio between hydrogen and hydroxide ions is 1 : 1.
Therefore, moles of = volume × concentration of
=
= 0.06 mol
Similarly, moles of = volume × concentration of
=
= 0.1 mol
Therefore, ratio of moles of hydrogen and hydroxide ions is as follows.
0.06 : 0.1
= 0.6 : 1
As, hydroxide ions are present in excess so, hydrogen ions are the limiting reagent.
Hence, moles of water formed = moles of ions = 0.06 mol.
So, heat released = moles of
= 0.062 × 62.0 kJ/mol
= 3.72 kJ
= 3.72 × 1000 J
= 3720 J
Let T is the initial temperature. So,
Heat released = Heat absorbed by the solution
=
3720 J =
T =
Thus, we can conclude that initial temperature is .
Which of the following is a property of water? (5 points)
It can freeze very fast.
It has low heat capacity.
It exists in only the liquid
state.
It attracts other water molecules.
HELPPPPPPPPPP
Answer: It attracts other water molecules is a property of water.
Explanation:
A property of a substance where its molecules stick to each other is called cohesion.
For example, water molecules attracts each other because water has the property of cohesion.
Whereas water has high heat capacity.
Water can exist in solid, liquid or vapor form.
Thus, we can conclude that it attracts other water molecules is a property of water.
Answer
above answer is correct
Explanation:
Need some help with this Chem Question :)
Answer:
Mg + Fe(NO₃)₂ —> Fe + Mg(NO₃)₂
Explanation:
The activity series helps us to easily define whether or not a reaction will occur.
Elements at the top of the activity series are highly reactive and will always displace those at the bottom of the series in any reaction.
With the above information in mind, let us answer the questions given above.
Ag + NaNO₃ —> Na + AgNO₃
The above reaction will not occur because Na is higher than Ag in the activity series. Thus, Ag cannot displace Na from solution.
Pb + Mg(NO₃)₂ —> Pb(NO₃)₂ + Mg
The above reaction will not occur because Mg is higher than Pb in the activity series. Thus, Pb cannot displace Mg from solution.
Mg + Fe(NO₃)₂ —> Fe + Mg(NO₃)₂
The above reaction will occur because Mg is higher than Fe in the activity series. Thus, Mg will displace Fe from solution.
Cu + Mg(NO₃)₂ —> Cu(NO₃)₂ + Mg
The above reaction will not occur because Mg is higher than Cu in the activity series. Thus, Cu cannot displace Mg from solution.
From the above illustration, only
Mg + Fe(NO₃)₂ —> Fe + Mg(NO₃)₂
Will occur.
13. (08.04 LC)
Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? (5 points)
a. Strong acid
b. Strong base
c. Weak acid
d. Weak base
anyone know??? HELPPPPP
Answer:
c. Weak acid
Explanation:
A substance that gives off hydrogen ions (H⁺) when dissolved in water is an acid.An acid that ionizes only partially when dissolved in water is a weak acid.Thus the correct answer is option c. Weak acid.
A strong acid would ionize completely, while a base would give off hydroxide ions (OH⁻).
Determain the number of moles in 2.24l of ch4 at stp
Answer:
0.1 mole of CH₄
Explanation:
From the question given above, the following data were obtained:
Volume of CH₄ = 2.24 L
Number of mole of CH₄ =?
The number of mole of CH₄ can be obtained as follow:
Recall:
1 mole of a gas occupy 22.4 L at stp. This implies that 1 mole of CH₄ occupies 22.4 L at stp.
22.4 L = 1 mole of CH₄
Therefore,
2.24 L = 2.24 × 1 mole of CH₄ / 22.4
2.24 L = 0.1 mole of CH₄.
Pb(NO3)2 + 2Naci
2NaNO, + PbCI,
How many moles of helium are required to fill a 5.10 L ballon to a pressure of 1.1 atm at 22 Kelvin? Show your work to receive full credit.
Answer:
n = 3.1 moles
Explanation:
Given that,
The volume of a balloon, V = 5.1 L
Pressure, P = 1.1 atm
Temperature, T = 22 K
We need to find the number of moles are required to fill the balloon. We know that,
Gas law, PV = nRT
Where
R is gas constant, R = 0.08206 L-atm/mol-K
So,
[tex]n=\dfrac{PV}{RT}\\\\n=\dfrac{1.1\times 5.1}{0.08206 \times 22}\\\\n=3.1[/tex]
So, there are 3.1 moles of helium are required.
The moles of helium are required to fill a 5.10 L ballon to a pressure of 1.1 atm at 22 Kelvin is 3.1 moles.
How we calculate moles?Moles of gases will be calculated by using the ideal gas equation as:
PV = nRT, where
P = pressure of gas = 1.1 atm
V = volume of gas = 5.10 L
R = universal gas constant = 0.08206 L-atm/mol-K
T = temperature of gas = 22K
n = moles of gas?
On putting all these values in the above equation and calculate for the value of n as:
n = 1.1 × 5.10 / 0.082 × 22 = 3.1 moles
Hence, the required moles is 3.1 moles.
To know more about ideal gas equation, visit the below link:
https://brainly.com/question/25290815
7. Iron combines with 4.00 g of Copper (11) nitrate to form 6.01 g of Iron (I) nitrate and 0.400 g copper
metal.
How much iron did it take to convert the Cu(NO3)2?
The mass of iron required by one mole or 187.5 g of copper nitrate is 234 g. Then the mass of Fe required by 4 g of copper nitrate is 5 g.
What is copper nitrate?Copper nitrate is an ionic compound formed by donating electrons from metallic copper to the nitrate group. Copper nitrate easily undergoes displacement reactions.
The reaction of copper nitrate with iron is written below:
[tex]\rm Cu(NO_{3})_{2} + 4 Fe \rightarrow 2Fe_{2}(NO_{3})_{2} + Cu[/tex]
As per this reaction, one mole of copper nitrate requires 4 moles of Fe.
molar mass of Fe = 58.5
mass of 4 moles = 234 g
molar mass of copper nitrate = 187.5 g.
187.5 g of copper nitrate need 234 g of Fe. Hence, 4 g of Cu needs:
234 × 4 /187.5 = 5 g
Therefore, the mass of Fe requires is 5 g.
Find more in copper nitrate:
https://brainly.com/question/12768349
#SPJ2
how to find the group number of f block elements
Answer:
I hope you understand please follow me please
Rank the following four isomeric hydrocarbons in order of increasing stability: - cis-1,4-Dimethylcyclohexane - 1-Cyclopropylpentane - Ethylcyclohexane - cis-1-Ethyl-2-propylcyclopropane
Answer:
cis-1-Ethyl-2-propylcyclopropane <1-Cyclopropylpentane <cis-1,4-Dimethylcyclohexane <Ethylcyclohexane
Explanation:
The least is the number of additives especially at the position 1,4 of the cyclohexane, the more is the stability.
Hence, the correct order of increasing stability is
cis-1-Ethyl-2-propylcyclopropane <1-Cyclopropylpentane <cis-1,4-Dimethylcyclohexane <Ethylcyclohexane
For the following reaction: 4C2H3Cl + 702 → 8CO + 6H20 + 2Cl2 If the reaction of 57.8 grams of O2 produces 36.5 grams of CO, what is the percent yield?
Answer:
[tex]Y=63.1\%[/tex]
Explanation:
Hello there!
In this case, according to the given chemical reaction:
[tex]4C_2H_3Cl + 7O_2 \rightarrow 8CO + 6H_2O + 2Cl_2[/tex]
It turns out possible for us to realize about the 7:8 mole ratio of O2 to CO, and therefore, the theoretical yield of the latter is calculated via stoichiometry:
[tex]m_{CO}=57.8gO_2*\frac{1molO_2}{32.0gO_2}*\frac{8molCO}{7molO_2} *\frac{28.01gCO}{1molCO} =57.82gCO[/tex]
Finally, the percent yield is calculated by dividing the actual yield, 36.5 g by the just computed theoretical one:
[tex]Y=\frac{36.5g}{57.8g} *100\%\\\\Y=63.1\%[/tex]
Regards!
Identify the components of tourism and hospitality and discuss?
Answer: he basic components or 4'A' s of tourism are as follows:
ATTRACTION: It is the most important element & object that attract people to travel. ...
ACCESSIBILITY: It is important key factor for the development of tourism. ...
ACCOMMODATION: -It includes food & lodging facilities to the guest. ...
AMENITIES:
What are the components of tourism and hospitality?
Accommodations and.
Lodging.
Recreation and.
Entertainment.
Travel Services.
Food and Beverage Services.
Conventions and Event.
Management.
Explanation:
NOT MY WORDS! I HOPE ThIS HELPS!
plz who can help me i have a final project and i am ready to pay 20$
Answer:
hey friend
how can I help you