Answer:
41.495
Explanation:
107 gm of 2NH4Cl gives 111 gm of CaCl2
40 gm of 2 NH4Cl gives =(111*40)/107
=41.495 gm of CaCl2
State the functional groups that undergo cracking and substitution reaction.
Unsaturated organic compounds with a carbon-to-carbon double bond and alkynes with a carbon-to-carbon triple bond, as well as aldehydes and ketones with a carbon-to-oxygen double bond, undergo addition reactions.
What are 3 types of insects that belong to Phylum ?
Answer:
3 examples are beetles, a fly, and bees. Others include ants lady bugs and butterflies
Explanation:
complete and balance the following equation b. Br2 + Nacl
Using the notation just described, represent a cell based on the following reaction:
ClO3−(aq)+3Cu(s)+6H+(aq)→Cl−(aq)+3Cu2+(aq)+3H2O(l)
Pt is used as an inert electrode in contact with the ClO3− and Cl− .
Drag the appropriate labels to their respective targets. For neutral species, leave the pink target blank.
The cell notation of the redox reaction between Cu and ClO₃⁻ is:
Cu/Cu²⁺//ClO₃⁻//Cl⁻/PtWhat is a voltaic cell?A voltaic cell or electrochemical cell is a device which produces electricity from chemical reactions occuring within the cell.
The reactions occuring in a voltaic cell are redox reactions.
Oxidation occurs at the anode while reduction occurs at the cathode.
In the given reaction between Cu and ClO₃⁻ as shown below:
ClO₃⁻ (aq) + 3 Cu (s) + 6H⁺ (aq) → Cl⁻ (aq) + 3 Cu²⁺ (aq) + 3 H₂O (l)Cu is oxidized as follows: 3 Cu (s) → 3 Cu²⁺
ClO₃⁻ is reduced as follows: ClO₃⁻ (aq) → Cl⁻ (aq)
The voltaic cell notation is as follows where Pt is used as an inert electrode in contact with the ClO₃⁻ and Cl⁻:
Cu/Cu²⁺//ClO₃⁻//Cl⁻/PtTherefore, the cell notation of the redox reaction between Cu and ClO₃⁻ shows that Cu is oxidized while ClO₃⁻ is reduced.
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A 6.39L balloon filled with gas is warmed from 239.3K to 305.9K. What is the volume of the gas after it is heated?
Answer:
69.271837183727718371
Many cultures eat grasshoppers, what nutrients do grasshoppers have that is good for you?
Answer:
Grasshoppers are a good source of unsaturated fats and they can lower risk of diseases.
Explanation:
A sample of an ideal gas has a volume of 2.22 L at 284 K and 1.11 atm. Calculate the pressure when the volume is 1.95 L and the temperature is 305 K.
Answer: 1.36 atm
Explanation:
In 1-2 sentences, describe what happens to atoms of a compound when a chemical reaction occurs
In a chemical reaction, bonds between atoms in the reactants are broken and the atoms rearrange and form new bonds to make the products.
The atoms get rearranged into new substances.
sodium oxide can react with water to produce sodium hydroxide. in the reaction, how many moles of sodium hydroxide will be produced.
Answer: 2 mol of NaOH
Explanation:
The balanced chemical equation for the reaction is:
Na2O + H2O --> 2NaOH
Looking at this, we can see that 1 mol of Na2O will react with 1 mol of H2O to produce 2 mol of NaOH
4. What is the movement of blood through your blood vessels called?
circulation
digestion
nervous
Answer:
circulation
Explanation:
The movement of the blood through the heart and around the body through the narrow vessels is called circulation which makes up the cardiovascular system.
Answer:
Circulation
Explanation
digestion is the process of breaking down food by mechanical and enzymatic action in the alimentary canal into substances that can be used by the body and its the only one that makes sence
Which list of phases of H2O is arranged in order of increasing entropy
Answer: Solid, liquid, and gas are the three phases of H2O that are listed in order of increasing entropy.
The haphazard motion of water molecules in molecular water gives it the maximum flexibility.
What is the equilibrium constant for the reaction at 644 K ?
Please help solve this I’ll award brainliesttt
Answer:
types of elements nacl MGS
behavior shared between atoms tranferred from one to another
properties high melting poin low melting point
example SI-o metal + non metal
example H-H only non metal elements
Explanation:
1. In sheep, a gene with two alleles decides wool color. The allele for white wool is
dominant to the allele for black wool. If two heterozygous sheep mate, what
percentage of the sheep will have white wool? Record your answer as a
percent.
White wool
Black wool
HINT: Create a Punnett square on scratch paper to determine the answer.
This is defined as a variant form of a gene. We were told that allele for white wool is dominant to the allele for black wool and two heterozygous sheep mated.
When we cross Ww and Ww we get WW, Ww, Ww, ww. Since white is dominant then the percentage is 3/4 = 75 percent.
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Is god real I don’t really no but say yes
Answer:
Yes
Explanation:
We have been created by him therefore we would not have been created if there was no God.
state 3 commercial uses of oxygen
Answer:
Brainliest Please !!!!!
what the symbol of sodium peroxide
Answer:
The Symbol Of Sodium Peroxide Is Na2O2
Answer:
Na2O2
Explanation:
Translate the world equation in skeleton equation and balance them
(I) Hydrogen+chlorine= Hydrochloric acid
(II) potassium+chloride= potassium chloride+oxygen
Answer:
The balanced equation is: H2 (g) +Cl2 (g) →2HCl (g)
Explanation:
Balancing chemical equation refers to balancing the stoichiometric coefficients on the reactants and products side. This must be done as the chemical equation obeys the law of conservation of mass and momentum.
The representation of a chemical reaction in the form of substances is known as a chemical equation. The equation in which the number of atoms of all the molecules is equal on both sides of the equation is known as a balanced chemical equation. The Law of conservation of mass governs the balancing of a chemical equation.
Given chemical equation
The balanced chemical equation for the hydrogen + chlorine -> Hydrogen Chloride.
H2 + Cl2 → 2HCl
The equation is balanced as on the reactants side there are two hydrogens present and the same on the products side. For chlorine as well the same thing goes two chlorine atoms on the reactants side and two on the products side.
What’s the answer for this?
Answer:
it will fall then rise and return to ×
PLEASE HELPPPPP I WILL GIVE BRAINLIEST!!!!!
How many grams of ammonium sulfate can be produced if 2500.0 g of H2SO4 react with excess NH3 according to the equation 2NH3(aq) + H2SO4(aq) → (NH4)2SO4(aq)? Calculate the percent yield if 3100 g (NH4)2SO4 were actually produced.
-Calculate the theoretical yield of ammonium sulfate.
-Calculate the percent yield for the associated question
-Write the unit for the theoretical yield (see related question)
If 2500 grams of H2SO4 react with excess NH3 according to the illustration, the amount of ammonium sulfate that can be produced would be 3,370.92 grams. If only 3100 grams of ammonium sulfate were produced, the percentage yield would be 91.96%.
Stoichiometric calculationsFrom the equation of the reaction:
2NH3(aq) + H2SO4(aq) → (NH4)2SO4(aq)
The mole ratio of H2SO4 and (NH4)2SO4 is 1:1
Mole of 2500 grams H2SO4 = 2500/98 = 25.51 moles
Equivalent mole of (NH4)2SO4 = 25.51 moles
Mass of 25.51 moles (NH4)2SO4 = 25.51 x 132.14 = 3,370.92 grams
If 3100 g of (NH4)2SO4 were actually produced, the percentage yield would be:
Percent yield = 3100/3370.92 x 100 = 91.96%
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HELP!!!
Find the volume of a balloon of gas at 842 mm Hg and –23oC, if its volume is 915 mL at a pressure of 1170 mm Hg and a temperature of 24oC.
(I will give brainliest! Thank you so much!)
Answer:
2.54kpa
Explanation:
p*v/t = constant
6.58/539=p2/2111
p2=211(6.50/539)
Answer:
2.53kpa
Explanation:
p1*v1/t1 = constant
the constant can be changed to p2*v2/t2
v2 can be removed from equation as it is constant
What is the name of an isotope with 23 protons and 25 neutrons?
Select one:
Cadmium
Vanadium
Chromium
Manganese
Answer: Vanadium
Explanation:
Magnesium + ... → Magnesium chloride + ....
Mg + HCl → MgCl_2 + H_2
(─.─||）
Answer:
Magnesium + hydrochloric acid → Magnesium chloride + hydrogen gas
Explanation:
acid + reactive metal (magnesium) → salt + hydrogen gas
which of the following changes different colours in alkalis,acids,and neutral substances?
A red litmus paper
B Blue litmus paper
C universal indicator
D all of the above
Which two organisms are most likely to be competitors?
chipmunk, cow
snake, hawk
snake, badger
chipmunk, badger
please help I'm stuck on this!
What effect does sunlight have on CO2 molecules?
Answer:
Carbon Dioxide is not affected by sunlight. But the radiation changes direction when it hits a carbon dioxide molecule
Explanation:
a
Scientists have observed that the average surface temperature of the Earth has been increasing. This increase has
affected the oceans. Glaciers and ice sheets melt, and water from this melting process becomes part of the oceans.
The increasing temperature of the Earth's surface also warms ocean waters. As a result, the volume of the oceans
expands. These two events affect sea level.
What would happen to sea level if the average surface temperature trend that was observed since the 1960s
continues?
A) Sea level will rise, then will suddenly fall.
B) Sea level will remain the same.
C) Sea level will continue to fall.
D) Sea level will continue to rise.
Please select the best answer from the choices provided
O A
OB
Save and Exit
Next
Submit
Mark this and return
Answer:
D) Sea level will continue to rise
Denzel has a flask containing a mixture of rocks, soil, iron filings and salt. He needs to separate the four components of the mixture. Create a method to successfully separate each of the components of the mixture. HINT: use their physical and/or chemical properties.
Answer:
Sift the mixture to separate the rock from the iron filings, soil and salt.
You can then use a magnet to separate the iron filings from the salt and soil.
Afterwards, you can pour water into the remaining salt- soil mixture. Salt will dissolve but the soil will remain at the bottom of the water.
If you want to separate the salt from the water, you can boil it till all the water evaporates. The only thing that'd be left in the pan is salt.
Calculate the volume occupied by 10 moles of hydrogen gas at 145K and 705 Torr.
2.05 L
14L
128 L
0.007 L
The volume occupied by 10 moles of hydrogen gas at 145K and 705 Torr is 128.01L.
How to calculate volume?The volume of a gas can be calculated using ideal gas law equation as follows:
PV = nRT
Where;
P = pressureV = volumen = number of molesR = gas law constantT = temperatureP = 705torr = 0.93atmV = ?T = 145Kn = 10R = 0.0821 Latm/molK0.93 × V = 10 × 0.0821 × 145
0.93V = 119.05
V = 128.01L
Therefore, the volume occupied by 10 moles of hydrogen gas at 145K and 705 Torr is 128.01L.
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Based on the Law of Conservation of Mass, what's the minimum amount of Magnesium that will react with 32g of Oxygen to produce 80.6g of Magnesium Oxide?
mass before reaction = mass after reaction
Mg + O = MgO
Mg + 32 = 80.6
Mg = 80.6 - 32 = 48.6 (a)
