The question is incomplete, the complete question is;
AgNO3(aq)+NaCl(aq)→AgCl(s)⏐↓+NaNO3(aq)
1- If 4.52g of the precipitate is formed, how many grams of sodium chloride reacted?
Answer:
1.8 g
Explanation:
Given the equation;
AgNO3(aq)+NaCl(aq)→AgCl(s)↓+NaNO3(aq)
We can see that the reaction is 1:1 Hence, 1 mole of sodium chloride yielded 1 mole of the precipitate(AgCl).
If this is so,
Number of moles of precipitate formed = 4.52g/143.32 g/mol
Number of moles of precipitate formed = 0.0315 moles
Hence, 0.0315 moles of precipitate was formed by 0.0315 moles of NaCl
Therefore;
Mass of NaCl reacted = 0.0315 moles * 58.5 g/mol = 1.8 g
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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How many Joules of heat are released from a 400g piece of glass that has been cooled
from 28°C to 6°C? The specific heat for this particular type of glass is 0.664 J/g°C.
please show work.
Answer:
400 × 22 × 0.664 = 5843.2 J
why cancer is not a pathogen?
Answer:
Because their cells duplicate inside of you not normally!
Explanation:
Hope this helps! Plz mark as brainliest! :)
Answer fast please?????????????
Answer:
option a. iron,copper, aluminium.
Where are the most reactive nonmetals located on the periodic table?
What volume, in milliliters, of a 0.140 M solution of KCl contains 2.65 g of the compound?
Express the volume to three significant figures and include the appropriate units.
Answer:
Calculate moles KCl: 2.55 g / 74.55 g/mol = 0.0342 moles KCl
Volume KCl = 0.0342 mol X (1 L/0.150 mol) = 0.228 L X 1000 mL/L = 228 mL
Explanation:
Volume=288mL
Given:
Molarity=0.140 M
Mass=2.65 g
To find:
Volume=?
Molar mass of KCl = 74.55 g/mol
Firstly, we need to calculate the number of moles of KCl:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} \\\\\text{Number of moles}=\frac{2.65g}{74.55g/mol} \\\\\text{Number of moles}=0.0355 moles[/tex]
In order to calculate the volume,
[tex]\text{ Volume of KCl} = 0.0342 mol * (1 L/0.150 mol) \\\\\text{ Volume of KCl} = 0.228 L * 1000 mL/L \\\\\text{ Volume of KCl} = 228 mL[/tex]
The volume in mL will be 228mL.
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* Urgent Bet no one knows this *
Answer: The name of the super continent that existed millions of years ago.
Explanation:
Our continents as they exist today were once joined together into a super continent known as Pangea. Over the millennia, the land masses broke off and drifted away creating the location of the continents we know today.
(つ ^‿^ )つ Hey there!
Answer → Is the second answer, The name of the super continent that existed millions of years ago.
✨Hope this helps!✨
What is climate? What are three things that cause the earths climate?
Answer:
The climate has been caused by many natural factors including changes in the sun emissions from volcanoes variations in Earth's orbit and levels of carbon dioxide. Global climate change has typically occured very slowly over thousands or millions of years .The three causes of the Earth's climate are
Industrial activitiesAgricultural activitiesDeforestationthese are the causes of the Earth's climate.
Climate is a average weather in a given area for a long period of time is called a climate
maybe this might help ur question
Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, write NR after the reaction arrow. Pb ( N O ₃ ) ₂ (aq) + K I (aq) → ☐⁴⁻ ☐³⁻ ☐²⁻ ☐⁻ ☐⁺ ☐²⁺ ☐³⁺ ☐⁴⁺ 1 2 3 4 5 6 7 8 9 0 ☐₁ ☐₂ ☐₃ ☐₄ ☐₅ ☐₆ ☐₇ ☐₈ ☐₉ ☐₀ + ( ) → ⇌ (s) (l) (g) (aq) NR Pb I N O K Reset
Answer: [tex]Pb(NO_3)_2(aq)+2KI(aq)\rightarrow PbI_2(s)+2KNO_3(aq)[/tex]
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.
The double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.
The balanced molecular equation is:
[tex]Pb(NO_3)_2(aq)+2KI(aq)\rightarrow PbI_2(s)+2KNO_3(aq)[/tex]
8. Which of the following is TRUE about limiting and excess reactants?
A. The excess reactant will be completely consumed after the reaction is complete
B. The limiting reactant determines the maximum amount of product that can be formed
C. Some of the limiting reactant is left over after the reaction is complete.
D. The reactant that has the largest given mass will be the excess reactant.
The statement which is TRUE about limiting and excess reactants is (B) The limiting reactant determines the maximum amount of product that can be formed.hence the correct option is (B)
What is Limiting reagent ?A reactant that is completely consumed at the end of a chemical reaction is known as the limiting reagent.
Since the reaction cannot proceed without this reagent, the amount of product that can be produced is constrained.
The reactant that is totally consumed during a reaction, or the limiting reagent, decides when the process comes to an end.
The precise quantity of reactant required to react with another element can be estimated from the reaction stoichiometry.
Therefore, The statement which is TRUE about limiting and excess reactants is (B) The limiting reactant determines the maximum amount of product that can be formed.hence the correct option is (B)
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Which molecule or ion below would be expected to have a trigonal planar electron domain geometry?
a. nitrate ion, NO3 1-
b. at least two of these
c. carbon tetrachloride
d. water
e. sulfur dioxide
Answer:
a. nitrate ion
e. sulfur dioxide
Explanation:
Trigonal planar geometry, is possible, where the combination of atoms or lone pain form a triangle which is is same plane.
Hence, from the given options,
Nitrate ion has a trigonal planar geometry.Carbon tetrachloride has a teterahedral geometrywater has a bent angular geometry.sulfur dioxide has a trigonal planar geometry.Therefore,
From the given options, the correct answer is -
a. nitrate ion
e. sulfur dioxide
320.0 g of NaCl would contain how many formula units? (Molar mass of
NaCl is 58.44 g/mol) *
Answer:
Formula unit = 32.9746×10²³
Explanation:
Given:
Mass of NaCl = 320 g
Molar mass of NaCl = 58.44 g/mol
Find:
Formula unit
Computation:
Formula unit = [Mass of NaCl / Molar mass of NaCl]Avogadro's number
Formula unit = [320 /58.44]6.022×10²³
Formula unit = 32.9746×10²³
#12 don’t understand need help significantly
C. 8.80 mol H₂
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableMolesStoichiometry
Using Dimensional AnalysisAnalyzing Reactions RxNExplanation:Step 1: Define
[RxN - Balanced] N₂ (g) + 3H₂ (g) → 2NH₃ (g)
[Given] 100 g 2NH₃
[Solve] moles H₂
Step 2: Identify Conversions
[RxN] 2 mol NH₃ (g) → 3 mol H₂ (g)
[PT] Molar Mass of N - 14.01 g/mol
[PT] Molar Mass of H - 1.01 g/mol
Molar Mass of NH₃ - 14.01 + 3(1.01) = 17.04 g/mol
Step 3: Stoich
[DA] Set up conversion: [tex]\displaystyle 100 \ g \ NH_3(\frac{1 \ mol \ NH_3}{17.04 \ g \ NH_3})(\frac{3 \ mol \ H_2}{2 \ mol \ NH_3})[/tex][DA] Multiply/Divide [Cancel out units]: [tex]\displaystyle 8.80282 \ mol \ H_2[/tex]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:
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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What is the pH of 2.88*10^-5 M LiOH?
Answer: 9.46
Explanation: in LiOH solution concentration of OH- ions is 2.88·10^-5 M
And pOH = -log( 2.88·10^-5 M) = 4.54. Because PH + pOH = 14.00
Then pH = 14-4.54
How many equivalents are in a solution that contains 0.25 moles Mg2+ and 0.50 moles Cl–?
Answer:
Explanation:
Mg²⁺ is divalent , hence
Molecular weight / 2 = equivalent weight .
.25 moles = 2 x .25 equivalents = .5 equivalents .
Cl⁻ is monovalent so
molecular weight = equivalent weight
.50 mole = .50 equivalent
Total equivalent = .50 of Mg²⁺ + .50 of Cl⁻
= 1 equivalent .
What is the estimated life expectancy of tin reserves?
Answer:
chemical reaction hope this helps ;)
Explanation:
If 13.5 L of nitrogen gas reacts with 17.8 L of hydrogen gas at STP, according to the following reaction, what mass of ammonia would be produced? N2 + 3 H2 --> 2 NH3 Report your answer with proper significant figures, only a number answer is required, no units needed for this form.
Answer: N5 + H4 and then do 13.5 * 17.8 then solve so 240.3 divided by 9
Your answer is 26.7 Pretty sure
Explanation: (study)
Answer:
Work is all on the paper
Please help me!!! this is due now
#15 need help don’t understand
Buffer sol that contain 1 mol NH4Cl and 1mol NH4OH per liter find PH
Answer: what
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.
who know the song genius?
Answer:
Me
Explanation:
The one with sia??
what observation helps a poison ivy plant survive in its environment
NASA pointed the Hubble Space Telescope at a very dark section of sky to see what might be found. The telescope revealed
about 10,000 distant and never-before-seen galaxies. NASA would have to make observations of more than 10,000,000
other sections to study the rest of the sky. If every section of sky also looked out on 10,000 galaxies, about how many
galaxies would exist in the known universe?
100,000,000
1,000,000,000
10,000,000,000
100,000,000,000
Hel
Answer:
100,000,000,000
Explanation:
Given that :
1 hubble space telescope pointed at 1 section of the sky reveals 10,000 distinct galaxies ;
Number of sections from which observation is to be made = 10,000,000
Number of distinct galaxy per section = 10,000
Number of galaxies that would exist in the known universe :
Total number of galaxies in the known universe :
Number of galaxies per section * number of sections
10,000 * 10,000,000
= 100,000,000,000s
1. If 3.2 L of nitrogen monoxide and 4.3 g of oxygen gas are combined, what volume of nitrogen dioxide will be formed? 2NO + 0, -> 2NO,
Answer:
[tex]3.2 \div 22.4 = \frac{1}{7} mol \: no[/tex]
[tex]4.3 \div 32 = 0.134mol \: o2[/tex]
Explanation:
NO is limit reactant so:
1÷7×46=6.57 grams of NO2 will form
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.
which statements describe the relationship between the area and the bioversity
?????????????????????????????????????????
Please help me I’m not sure with that
Answer:
i cant see the picture sorry
Explanation: