Balance the equation by putting the correct number in front of each compound. You can work this out mathematically or by drawing pictures on a piece of paper like the videos.
AgCl + Cu --> Ag + CuCl2 cleaning silver
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Related Questions
Do you think a mutation (created during reproduction) in one gene is likely to result in a new trait in an offspring? Why or why not?
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Answer:
Yes and no
Explanation:
It can be silent or neutral mutation that has no effect on the structure or functioning of the organism
OR
It can be a useful (advantageous to the organism)
or a harmful mutation (causes genetic disorders)
Mutation created during reproduction in one gene may some times results in a new trait in offspring that can be of good or bad to the offspring.
What is mutation ?Genetic mutation is modification to a small section of a genome's nucleotide sequence One nucleotide is frequently replaced by another in point mutations; other changes involve the insertion or deletion of one or more nucleotides.
Errors in DNA replication or the harmful effects of mutagens, such as chemicals and radiation, which react with DNA and alter the architecture of individual nucleotides, are the two main causes of mutations.
The mutations occurred during reproduction most probably passes to the offspring as new a trait and commonly results in a genetic disorder. In some occasional cases these genetic variations can lead to silent or good characteristics.
Find more on mutations:
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When managed for human consumption, a renewable resource represents a balance between an ecosystem’s health and human needs. A resource that is renewable is readily available or easily replenished, but often requires management in order to prevent depletion.
What is an example of a renewable resource that needs to be closely managed?
A) wind B) solar C) timber D) coal
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Answer:
C) Timber
Explanation:
"Let's look more closely at renewable natural resources. They are the ones that can grow again. Trees are a good example. If cut down, they can regrow from seeds and sprouts."
The empirical formula of a compound is CH3- The molecular formula of this compound could be C2H6 CH4 C3H6 C2H4
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Answer:
C2H6
Explanation:
cooking gas
pure substances or mixtures
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Answer: Cooking gas is a Mixture
Explanation:
A pure substance is a substance which contains definite composition of only one type of component. Hence, it cannot be separated by physical means.
On the other hand, a mixture is a substance which contains two or more than two types of components and they can be separated by physical means as well.
Cooking gas is a made up of a combination of different hydrocarbons (methane, ethane , butane etc) and thus is a mixture.
N2+ 3H2 → 2NH3
How many moles of hydrogen, H2, are needed to react with 2.0 moles of
nitrogen, N2?
( pls give explanation :] )
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This is because you have to use the molar ratio (in this case, it is, 1 : 3) so
2 x 3 = 6 moles
how many grams of the parent isotope are left in the sample after three half lives?
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Think about the equation for kinetic energy, KE - mv?. Given that an increase in temperature increases kinetic
energy, what would happen to the particle speed if the temperature of the room was increased?
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Answer:
The correct answer would be - the speed of particles will increase and move faster.
Explanation:
As we know and also given that increase in temperature leads to an increase in kinetic energy that is used by particles and the speed of the particles move faster.
However, the mass of the particle is the main factor that is responsible for the speed of the particles and the temperature at which they are present. High temperatures and small particles lead to an increase in the speed of particles.
The number of O's on reactant side of the equation is
6 Mg + 2 PO₃ ➔ ? MgO + 2 P
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Please Be Honest
Rate 1-10
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HELPPPPP!!!
Which of the elements below is considered a metalloid?
a Arsenic
b Iron
c Iodine
d Barium
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Answer: a) arsenic
Explanation:
answer:
a. arsenic
explanation:
arsenic is classified as a metalloid because it has some properties similar to a metal and others of a non-metal.
good luck :)
hopefully, this helps
have a great day !!
Which of the following is a synthetic material that can be used as an inhibitor? *
Coal
Enzymes
Preservatives
Plastic
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Answer: Enzymes
Explanation: entzymes are natural catalysts, e.g. Amylase is an enzyme
Balance these equations
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Answer:
I have made it in above picture
hope it helps
Answer:
a is 2
b is 2
c is 2
d1 is 4
d2 is 2
Explanation:
Helppp pleaseee
How many hydrogen atoms are indicated by the formula (NH4)2C7H10O2?
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Answer:
The correct answer is - 18.
Explanation:
The number of hydrogen atoms is indicated by the formula (NH4)2C7H10O2 that has two parts (NH4)2 and C7H10O2 then
Number of hydrogen atoms in (NH4)2 = 4*2= 8
number of H atoms in C7H10O2 = 10
then the total number of atoms = 10+8
= 18.
Thus, the correct answer is = 18 hydrogen atoms.
Pls what is the difference between the mass number and atomic number
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A saturated solution of copper (II) hydroxide is prepared in a beaker by adding the solid to water and stirring. When the solution is
prepared, crystals of copper (ll) hydroxide remain on the bottom of the beaker.
Which change will cause the molar solubility of copper (II) hydroxide to increase?
A)addition of solid copper chloride
B)
addition of solid sodium hydroxide
C)
addition of aqueous hydrochloric acid
D)
dilution of the solution by addition of water
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Answer:
addition of aqueous hydrochloric acid
Explanation:
The solubility of copper (ll) hydroxide in water is negligible. This implies that the substance is only slightly soluble in water.
However, the addition of aqueous hydrochloric acid leads to the following reaction;
Cu(OH)2 + 2HCl ---------> CuCl2 + 2H2O
Copper II chloride is soluble in water hence the crystals dissolve when stirred. and the molar solubility increases.
Please help with this question, the options are circled in yellow.
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2. — a solid forms
3. — the colour changes
4. — energy is released
5. — the odor changes
Silver has a charge of +1.
A 29 gram piece of jewellery made of silver is lefr out on a counter for two weeks. At the end of the two weeks, there is a layer of residue on the jewellery (product), and its mass is 31 grams. Explain this increase in mass.
PLEASE HELP!!!
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The sulfur comes from hydrogen sulfude from air pollution this may result in an increase in mass or you can say: When iron or any other metal oxidizes, oxygen from the air combines with the iron to make iron oxide or rust. So the weight increases, due to the increased weight of oxygen which has combined with the iron either one they are both correct.
Hope this helped ya
name the type of chemical bonding involved in the formation of ammonium ion from ammonia
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Answer:
When the ammonium ion, NH4+, is formed, the fourth hydrogen is attached by a dative covalent bond
Explanation:
because only the hydrogen's nucleus is transferred from the chlorine to the nitrogen. The hydrogen's electron is left behind on the chlorine to form a negative chloride ion.
can yall please help answer these two ?
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Answer:
19) Refraction will be the answer.
20) Diffuse reflection will be the answer.
Diffuse refraction
How many molecules of hydrogen chloride gas could theoretically be produced at STP by reacting 34.7 liters of hydrogen gas at STP with excess chlorine gas?
H2 + Cl2 à HCl (not balanced)
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Answer:
69.4
Explanation:
There isn't one, I just took the test.
1. Al Einstein drives north 3 blocks, then turns east and drives 3
blocks. Al then turns south and drives 3 blocks.
a. Plot Al's trip on the graph
b. How could Al have made his traveling distance shorter
while maintaining the same displacement?
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distance time graphs are made by plotting data for time and what?
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Answer:
A distance-time graph shows how far an object has travelled in a given time. Distance is plotted on the Y-axis (left) and Time is plotted on the X-axis (bottom).
Pls answer I will mark brainiest!!!
Look at the dots around each symbol and the energy levels from the resources above
Be specific with your responses for each question. Your teaching the reader via answers!
Please answer the following questions:
Why does Na(sodium) have only one dot?
Why do none of these diagrams show more than 8 dots?
What relationship do you notice between the dots in these two charts?
The number of dots that hydrogen and helium have in their dot diagram is the same as the number of electrons shown for them on the Periodic Table. Why? (Hint: OCTET RULE)
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Hi! I'd love to help you if I can. Is there a picture that was provided? I'm sure I can assist you, but there seems to be some missing information.
Which event is caused by gravity?
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Answer:
C
Explanation:
Cause waves causes gravity to make higher waves
Calculate the percentage by mass of oxygen in trioxonitrate (v) acid, (HNO3). [ H=1, N=14, O=16]
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Answer:
Percentage by mass of oxygen = 76.20% (Approx)
Explanation:
Given:
HNO3
H=1, N=14, O=16]
Find:
Percentage by mass of oxygen
Computation:
HNO3
Total mass = 1 + 14 + 3(16)
Total mass = 63
Mass of oxygen = (3)(16) = 48
Percentage by mass of oxygen = [48/63]100
Percentage by mass of oxygen = 76.20% (Approx)
how many moles of oxygen are needed to
completely react with 8 moles of zinc?
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Answer:
I Hope it help you and Please mark me as Brilliant
Explanation:
Consider this balanced chemical equation:
2 H2 + O2 → 2 H2O
We interpret this as “two molecules of hydrogen react with one molecule of oxygen to make two molecules of water.” The chemical equation is balanced as long as the coefficients are in the ratio 2:1:2. For instance, this chemical equation is also balanced:
100 H2 + 50 O2 → 100 H2O
This equation is not conventional—because convention says that we use the lowest ratio of coefficients—but it is balanced. So is this chemical equation:
5,000 H2 + 2,500 O2 → 5,000 H2O
Again, this is not conventional, but it is still balanced. Suppose we use a much larger number:
12.044 × 1023 H2 + 6.022 × 1023 O2 → 12.044 × 1023 H2O
These coefficients are also in the ratio of 2:1:2. But these numbers are related to the number of things in a mole: the first and last numbers are two times Avogadro’s number, while the second number is Avogadro’s number. That means that the first and last numbers represent 2 mol, while the middle number is just 1 mol. Well, why not just use the number of moles in balancing the chemical equation?
2 H2 + O2 → 2 H2O
is the same balanced chemical equation we started with! What this means is that chemical equations are not just balanced in terms of molecules; they are also balanced in terms of moles. We can just as easily read this chemical equation as “two moles of hydrogen react with one mole of oxygen to make two moles of water.” All balanced chemical reactions are balanced in terms of moles.
Example 8
Interpret this balanced chemical equation in terms of moles.
P4 + 5 O2 → P4O10
Solution
The coefficients represent the number of moles that react, not just molecules. We would speak of this equation as “one mole of molecular phosphorus reacts with five moles of elemental oxygen to make one mole of tetraphosphorus decoxide.”
Test Yourself
Interpret this balanced chemical equation in terms of moles.
N2 + 3 H2 → 2 NH3
Answer
One mole of elemental nitrogen reacts with three moles of elemental hydrogen to produce two moles of ammonia.
Which molecule has the most atoms?
A. CO2
B. N202
C. CO
D. H₂O S
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N202 ~ 4 atom
CO ~ 2 atom
H2OS ~ 3 atom
B
PLEASE HELP , 2-8 please
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2. valence electrons
3. a bond formed when atoms share one or more pairs of electrons.
4. chemical formula
5. a. calcium - 2
b. carbon - 4
c. sulfur - 6
6. a. electrons
7. the elements that make up water can't be split into a simpler form, but water can. water is a liquid at room temperature, oxygen and hydrogen are gases at room temperature.
8. because it is made of oxygen and hydrogen and one is partially negative and one is partially positive.
explanation: you’re welcome.
Calculate: A. Mercury has a specific Heat Capacity of 0.14 J/goC. How much heat is needed to raise the thermometer temperature 15 oC to 95 oC. There is 5 g of mercury in the thermometer.
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Answer:
[tex]\boxed {\boxed {\sf 56 \ Joules}}[/tex]
Explanation:
We are given the mass, specific heat, and temperature, so we must use this formula for heat energy.
[tex]q=mc \Delta T[/tex]
The mass is 5 grams, the specific heat capacity is 0.14 Joules per gram degree Celsius. Let's find the change in temperature.
ΔT= final temperature - initial temperature ΔT= 95°C - 15°C = 80°CWe know the variables and can substitute them into the formula.
[tex]m= 5 \ g \\c= 0.14 \ J/ g \ \textdegree C \\\Delta T= 80 \ \textdegree C[/tex]
[tex]q= (5 \ g )( 0.14 \ J/ g \ \textdegree C ) ( 80 \ \textdegree C)[/tex]
Multiply the first numbers. The grams will cancel.
[tex]q= 0.7 \ J/ \textdegree C(80 \ \textdegree C )[/tex]
Multiply again. This time the degrees Celsius cancel.
[tex]q= 56 \ J[/tex]
56 Joules of heat are needed.
Which of the following is a shape that has two foci?
A. A ray
OB. A sphere
O C. A circle
D. An ellipse
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Answer:
It is D.
Explanation: