Answer: [tex]Pb(NO_3)_2(aq)+2NH_4Cl(aq)\rightarrow PbCl_2(s)+2NH_4NO_3(aq)[/tex] .
The insoluble product is lead (II) chloride.
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
A double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.
The balanced chemical equation is:
[tex]Pb(NO_3)_2(aq)+2NH_4Cl(aq)\rightarrow PbCl_2(s)+2NH_4NO_3(aq)[/tex]
The insoluble product is lead (II) chloride.
Could someone pls help me if you know it!!
Answer:
Beautiftul, begging under F
honest, beginning in thrid line under A
hopeful, fifth line under F
Explanation:
How can mutations occur in cells? Submi Save and Exit Next Mark this and return
by rounding them to the neerest 10
How many moles are present in 5.24 x 1023 molecules of CH4?
Answer:
0.807 moles
Explanation:
No of molecules = No of mole × Avogadro's number
No of mole = No of molecules / Avogadro's number
No of mole = 5.24×10^23/6.02×10^23
0.870 moles
The power has gone out and you find a flashlight that uses batteries. When you turn on the flashlight, you are transforming:
what does our life have in common with the periodic table, What is the relationship between the world around us and the periodic table?
Answer:
Summary. To summarize, the periodic table is important because it is organized to provide a great deal of information about elements and how they relate to one another in one easy-to-use reference. The table can be used to predict the properties of elements, even those that have not yet been discovered.
Explanation:
Use the equation weight=mg to find the weight of a 45 kg child
Answer:
well the answer is 99.2lbs I know that
100 pts
HELP!!!!!!!!
Between steps 2 and 3, the chemical energy in the coal is converted to
electrical energy
mechanical energy
transitional energy
heat energy
Answer:
It Is Transitional Energy.
Explanation: I Took The Quiz And Got It Wrong. It Showed That Transitional Energy Was The Correct Answer.
Answer:
heat energy
Explanation:
Tritium (H-3) is a radioactive isotope of hydrogen with a half-life of 12.3 years. How long would it take for a 40.0g sample to decay down to 1.25g
Answer:
the answer maybe is 61.5 years (please check with others) tq
Explanation:
40/2=20
20/2=10
10/2=5
5/2=2.5
2.5/2=1.25
so one half life is 12.3 years
then 12.3 ×5 =61 .5
(why 5 ? because it decay 5 times to get 1.25 from 20)
when is light produced during e- configuration
18. Which statement about photosynthesis is FALSE?
a
Tilmy green pigment chlorophyll captures light
energy
b Oxygen is needed as a reactant to produce
glucose
The process converts light energy from the
csun into chemical energy in the bonds of
glucose.
d
Carbon dioxide is needed as a reactant to
produce glucose.
Which statement about photosynthesis is FALSE?
Answer:
b. Oxygen is needed as a reactant to produce
glucose is the incorrect statement here
Explanation:
plants uses simple raw materials to prepare their food , which includes water ( H2O ) and Carbon dioxide ( CO2 ).
and traps sunlight by Green pigments known as chlorophyll and stores these energy in bonds of glucose molecules
so ,
after this reaction glucose and oxygen is formed as products
● hence we conclude that Oxygen is not needed as a reactant to produce glucose , oxygen is the bi product formed during photosynthesis.
Pls help, How is stoichiometry used to calculate amounts of substances in a chemical reaction?
Answer:
Thus, to calculate the stoichiometry by mass, the number of molecules required for each reactant is expressed in moles and multiplied by the molar mass of each to give the mass of each reactant per mole of reaction. The mass ratios can be calculated by dividing each by the total in the whole reaction.
Explanation: Stoichiometry is the field of chemistry that is concerned with the relative quantities of reactants and products in chemical reactions. For any balanced chemical reaction, whole numbers (coefficients) are used to show the quantities (generally in moles ) of both the reactants and products.
Match each atomic particle with the correct charge.
1. proton neutral
2. neutron positive
3. electron negative
The proton is a postitive charge, therefore, being 1 (proton) matched to positive. Whilst neutron (2) is matched to neutral. Thus electron (3) is matched to negative.
PLZ HELP!
How do you think changing the angle of a ramp will affect work done?
Answer: The steepness of a ramp affects it by making it easier or harder.
Explanation: It's a bit situational. If you were going up a steep ramp with a heavy load, it will increase the work necessary, whereas if you were going down a ramp, it would decrease the work necessary. If you need this simply put, think about biking up and down a hill. It would be easier going down than up.
Anna was looking at a map that showed where hurricanes had formed. She noticed that more hurricanes formed over tropical oceans than over colder ocean areas. Which of these best explains
why more hurricanes form over tropical oceans?
Water has fewer currents in tropical oceans than in colder oceans.
Air has less moisture over tropical oceans than over cold oceans.
Water has more waves in tropical oceans than in colder oceans.
Air has more moisture over tropical oceans than over
Answer: D
Explanation:
pls asap figure it out pls I will mark brainliest
Answer:
NaCl (Na is a metal and Cl is a nonmetal) MgO (Mg is a metal and O is a nonmetal) Al2O3, NaF, Na2O
Explanation:
You have to have a metal and a non metal together for it to be ionic
WHICH OF THE FOUR COMPOUNDS HAS BONDS WITH THE GREATEST DEGREE OF POLARITY (MOST POLAR)?
Answer:
I NEED TO KNOW THIS TOO
Explanation:
IVE BEEN LOOKING FOR THE ANSWER
what is the balanced chemical equation for sulphuric acid and zincoxide
Answer:
ZnO + H2SO4 = ZnSO4 + H2O | Chemical reaction and equation
Explanation:
gloogle
Which kind of worm has a closed circulatory system?
a planarian
a fluke
a pinworm
an earthworm
An earthworm has a closed circulatory system.
The earthworm has a closed circulatory system. An earthworm circulates blood exclusively through vessels. There are three main vessels that supply the blood to organs within the earthworm.
As important as they are alive for distributing nutrients and organisms and decomposing matter, worms are also very important in the food chain. They provide a crucial protein-rich source of food for other important species like birds, hedgehogs and frogs.
They may live up to eight years, though one to two is more likely. Full size for an earthworm varies among species, ranging from less than half an inch long to nearly 10 feet.
Learn more about earthworm here:- https://brainly.com/question/13938105
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If a sample of nitroglycerin containing 2 mL (density = 1.592g/mL) is detonated, how many total moles of gas are produced? If each mole of gas occupies 55L under the conditions of the explosion, how many liters of gas are produced? How many grams of nitrogen gas are specifically produced?
Total moles of gas = 0.1225
Volume of gas produced : 6.7375 L
mass of Nitrogen : 0.588 g
Further explanationGiven
2 ml of Nitroglycerin(ρ=1.592 g/ml)
Required
Total moles of gas
Solution
Nitroglycerin detonated ⇒ decomposition reaction
4C₃H₅N₃O₉(s)⇒ 6N₂(g)+12CO(g)+10H₂O(g)+7O₂(g)
mass of Nitroglycerin :
[tex]\tt mass=2~ml\times 1.592~g/ml=3.184~g[/tex]
moles of Nitroglycerin :
[tex]\tt moles=\dfrac{3.184}{227,0865~g/mol}=0.014[/tex]
Total moles of gas:
[tex]\tt \dfrac{6+12+10+7}{4}\times 0.014=0.1225[/tex]
Volume of gas produced :
[tex]\tt 0.1225\times 55=6.7375~L[/tex]
moles of Nitrogen :
[tex]\tt \dfrac{6}{4}\times 0.014=0.021[/tex]
mass of Nitrogen :
[tex]\tt 0.021\times 28=0.588~g[/tex]
Why is there a leap year every four years?
Answer:
Because we are not perfect
Explanation:
This day is added to the calendar as a corrective measure, because the Earth does not orbit the sun in precisely 365 days.
what water has 97% of water
Answer:
ocean
Explanation:
because its easy
Which of the following is an example of a precipitate?
A: liquid evaporating into gas
B: a solid formed from a frozen liquid
C: a chunky solid formed from two liquids combining
D: a liquid solution that contains two substances
"Religion and culture are also affected by the climate and topographic diversity."
Justify this statement
Answer:
In a survey of a group of people, it was found that 60 0f them have
business, 45 have government jobs, 125 have farming, 27 have business
only, 15 have government job only, 10 have business and government
job only, 5 have government job and farming only.
i) How many people have all the profession?
ii) How many people were there in a survey?
1. Which term best describes ultraviolet radiation?
a. Harmless
b. Invisible
c. Undetectable d. Beneficial
What is true about a chemical reaction
Answer: energy is transferred, but it can go to the products or the reactants.
Explanation: in a chemical reaction, the atoms and molecules that interact with each other are called reactants.
instructions for #4-5, balance each equation after substituting symbols and formulas for words, remembering to include abbreviations for the physical state.
For subscripts, just make sure the number is in the right location in the compound formula.
4. Iodine crystals react with chlorine gas to form solid iodine trichloride.
5. Solid sodium bicarbonate reacts with hydrochloric acid [HCl (aq)] to produce aqueous sodium chloride, water, and carbon dioxide gas.
Answer:
Ok:
Explanation:
4.
[tex]I_2_{(s)} + 3Cl_2_{(g)} => 2ICl_3{(s)}[/tex]
5.
[tex]NaHCO_3_{(s)} + HCl_{(aq)} => NaCl_{(aq)} + H_2O_{(l)} + CO_2_{(g)[/tex]
Have ya helped anybody out today, how? And good job!
Answer:
I helped take care of my baby cousin :)
Explanation:
I've decided that i still want to have some orange juice
Answer:
Oh thats great..
But I hate juice :(
Please select the word from the list that best fits the definition.
Science lab, bring water and sodium
a) term calendar
b) weekly schedule
c) daily organizer
Answer:
C. Daily Organizer. Also called an agenda. We usually write notes in them for school related things so the answer is pretty self explanatory.
The ions S-2, Cl-1, K+, Ca+2, Sc+3 have the same total number of electrons as the noble gas argon. How would you expect the radii of these ions to vary?
Answer:
Cl^- <S^2-<Sc^3+ <Ca^2+<K^+
Explanation:
We know that ionic radius of ions decreases from right to left in the periodic table. This is because, ionic radii decreases with increase in nuclear charge. This explains why; Sc^3+ <Ca^2+<K^+.
Secondly, even though Cl^- is isoelectronic with S^2-, the size of the nuclear charge in Cl^- is larger compared to that of S^2- . Hence Cl^- is smaller than S^2- in ionic radius owing to increased nuclear attraction in Cl^-.