Chemistry High School

Balance the following chemical equation

Answers

Answer 1

hello:) The answers are in the picture below. I’m not sure how to explain but hope it helps :)

Related Questions

What volume do 4.96 moles of O2 occupy at STP?

Answers

Answer: Step 1: List the known quantities and plan the problem. Known. 4.96 moles O2; 1 mol = 22.4

Explanation: I hope that helped.

How many atoms are in 2.12 moles of C₂H₆

Answers

Answer:

1.28 x 10²⁴atoms

Explanation:

Given parameters:

Number of moles of C₂H₆ = 2.12moles

Unknown:

Number of atoms = ?

Solution:

A mole of a substance is used to quantity the number of atoms or other particles in a substance.

1 mole of a substance = 6.02 x 10²³ atoms

To solve this problem;

2.12 moles of the C₂H₆ will contain 2.12 x 6.02 x 10²³ atoms

= 1.28 x 10²⁴atoms

If lamp 1 is unscrewed from its holder, what will happen to lamp 2 and why?

Answers

If lamp 1 is unscrewed from its holder then lamp 2 will not glow because these two lamps are in series order and if we terminate it then in the whole circuit the current will stop flowing and therefore the connection is interrupted and lamp 2 will not glow

Hope it help
Mark me as brainliest

In order for sodium to have 8 valence electrons it would need to either gain _____ electrons or lose _____ electron.

Answers

Answer:

Explanation:

sodium has 1 valence electron because of its place on the periodic table. a trick to use is included in the picture below to find out how many valence electrons an element has. to get from 1 to 8 we add 7.

I hope this helps :))

i need to know what word goes into that the words are in each sentence plz help me i will give brainliest thank you :)

Answers

Answer:

im taking these points baby lol

Explanation:

i love you <3

True or False: There are more air particles in a closed syringe when the air is compressed.

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True I think.......
....................

False /

Please give me biran

Plz I need help is the 2nd time I post this

Answers

Answer:

2--->C

6---->E

3---->D

4--->A

5--->B

1---->F

Explanation:

I think so, sorry if its wrong.

decrease in vapour pressure will cause?
A. an increase in boiling point
B. a decrease in boiling point
C. no effect

Answers

Answer:

A. an increase in boiling point

Explanation:

A decrease in vapor pressure will cause an increase in the boiling point of a substance.

An increase in vapor pressure will decrease the boiling point.

Vapor pressure is a measure of the tendency of a liquid to change into gaseous form. The boiling point is the temperature at which the vapor pressure equals the atmospheric pressure. When vapor pressure reduces, there would be an elevation of the boiling point. This is why pressure cookers causes water to boil faster because they lower the boiling point.

Help fast... thanks I’ll give you brainliest

Answers

Answer:

Graph E matches description 3 (the car is accelerating).

Explanation:

When the graph increases, the line is turned up (graph E). So when something accelerates, it is going to increase. In this case, it would increase by speed.

Which of the following contains the most atoms?
24.305 g Mg
39.098 gk
21.62 g B
9.0122 g Be

Answers

Explanation:

9.0122 g be Maybe, sorry i don't think so

In the above , the sample of B 21.62 g of boron contains the most atoms because it has approximately 2 moles, while the other samples have only 1 mole each.

What is atoms

The molar mass of each element can be found on the periodic table.

The molar mass of Mg (magnesium) is about 24.305 g/mol.The molar mass of K (potassium) is about 39.098 g/mol.The molar mass of B (boron) is approximately 10.81 g/mol.The molar mass of Be (beryllium) is about 9.0122 g/mol.

To calculate the number of moles in each sample, we divide the mass of each sample by its respective molar mass:

For Mg: Number of moles = 24.305 g / 24.305 g/mol = 1 moleFor K: Number of moles = 39.098 g / 39.098 g/mol = 1 moleFor B: Number of moles = 21.62 g / 10.81 g/mol ≈ 2 molesFor Be: Number of moles = 9.0122 g / 9.0122 g/mol = 1 mole

Therefore, the sample with 21.62 g of boron (B) contains the most atom

Answers

Answer:

melting and boiling points

Explanation:

The technique for determination of melting and boiling points will also be described in this unit. Pure solid and liquid compounds possess sharp melting and boiling points. Therefore, melting and boiling points of a compound

An element X that has 15 protons and 15 electrons, loses three
electrons to form an ion.
What will be the charge on the ion?
What will be the number of protons and electrons in the ion?

Answers

Answer:

12 electrons and 15 protons.

Explanation:

The element having 15 electrons and 15 protons have atomic number 15. We know that when an atom lose or gain the electron ions are formed.

Anion formation:

Anion is formed when electron is accept by an atom.

X + e⁻ → X⁻

Cation formation:

Cation is formed when electron lose be an atom.

X → X⁺ + e⁻

The given atom loses 3 electrons thus oxidation number will be +3 and cation is formed.

X → X³⁺ + 3e⁻

Now element X have 15 protons and 12 electrons.

An element found in groups 3-12 of the periodic table is classified as a[n]

Answers

Answer:

Transition Metals

Explanation:

Hope this helped :)

What type of mass movement has materials that move in a single mass or block

Answers

Answer:

The correct answer is slump

Explanation:

slump, which occurs when rock and soil slide quickly down a steep slope. Such mass movement is common where road builders have cut highways through hills or mountains.

Answer:

slump

Explanation:

2021 edge

The purpose of copper chloride and water. Please answer !!!!!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!!!!!

Answers

Copper choruses purpose is its used as a catalyst for organic and inorganic reactions , mordant for dyeing and printing textiles, pigment for glass and ceramics, wood preservative, disinfectant, insecticide, fungicide, and herbicide. (Not sure if you want the actual purpose of water or not)

A solution is made by dissolving
3.60 g of sodium chloride in water to
a final volume of 115 mL solution.
What is the weight/weight % or
percent by mass of the solute?
Use 1.00 g/mL for the density of the solution.

Answers

Answer: 3.13%

Explanation:

Answer:

3.13

Explanation:

Which of these is a molecular ingredient that could be used in a wall-filling material ?

C6H6
Na6Ba6
NeNa
HCl

Answers

Answer:

C6H6 is the appropriate answer.

Explanation:

Answer:

c6h6

Explanation:

20 points. ASAP!
So u separated Sand and salt from a mixture through evaporation and filtration. Now what is your observations and decision?

Answers

Answer:

When two or more substances, that do not react chemically, are blended together,

the result is a mixture in which each component retains its individual identity and

properties.

The separation of the components of a mixture is a problem frequently encountered

in chemistry. The basis of the separation is the fact that each component has a

different set of physical and chemical properties. The components are pure substances

which are either elements or compounds. Under the same conditions of pressure and

temperature, the properties of every sample of a pure substance are identical. Each

sample melts at the same temperature, boils at the same temperature, has the same

solubility in a given solvent, etc.

can someone tell me the answer

Answers

Balanced I believe, an equation needs to be balanced to obey the laws of conservation of mass

CO2 is a ____________________

Group of answer choices

1.compound

2.element

3.mixture

4.solution

Answers

Answer:

CO2 is a compound

hope it helps

What are the four most important elements on earth?
hellum
carbon
water
nitrogen
O oxygen
hydrogen

Answers

Answer:

These four atomic elements are oxygen, carbon, hydrogen, and nitrogen.

Explanation:

hope it helps....

Answer:

Nitrogen/Carbon/Oxygen/Hydrogen

Explanation:

I believe those would be the most important because:

Nitrogen - Composing 78% of earths atmosphere.

Carbon - Building blocks for all known life.

Oxygen - We breath it as well as it composes 21% of our atmosphere.

Hydrogen - Makes up a bunch of compounds (like water) that enable humans to live.

Knowing the gravity on the moon is 1.6m/s what is your weight?

Answers

Weight varies dramatically if we leave earths surface.On the moon for example acceleration due to gravity is only 1.67m/s2 A 1.0-kg mass thus has a weight of 9.8 N on Earth and only about 1.7 N on the moon

How are zinc and sodium alike?

A.they are both solids at room temperature.

B.they have the same hardness at room temperature.

C.they have the same boiling point.

D.they have the same color.

Answers

Answer: both are solid at room temperture

Explanation:

Answer:

Explanation:

explain the coin and feather experiment. what conclusion can be drawn from experiment

Answers

In a vacuum, the objects fall at the same rate independent of their respective masses. That means coin and feather both reach the ground at the same time in a vacuum. Larger objects experience more air resistance than smaller objects. Also, the faster an object falls, the more air resistance it encounters.

Note:

hope this helps

A bond in which two atoms share a pair of electrons is a ionic bond or covalent bond or metallic bond?

Answers

Answer:

Covalent

Explanation:

Ionic gives or takes electrons

Metallic isn't really a "type" of bond

(b)Calculate the number of moles of CuSO4 that were in the impure sample of CuSO4(s) .

(c) In addition to the number of moles of CuSO4 calculated in part (b) , what other quantity must be measured in order to calculate the mass percentage of CuSO4 in the impure sample of CuSO4(s) ?

Need help now

Answers

Answer:

The questions are incomplete

Explanation:

(b) This question is incomplete. However to calculate the number of moles of CuSO₄ present in the impure sample. The formula below can be used;

number of moles = mass of CuSO₄ present in the impure sample ÷ molar mass of CuSO₄

(c) This question is also incomplete. However, to calculate the mass percentage of CuSO₄ present in the impure sample of CuSO₄, the formula below can be used.

Mass percentage of CuSO₄ =

mass of CuSO₄ present in the impure sample/mass of impure CuSO₄ × 100

Thus, the mass of the impure sample must be measured also since the actual mass of the CuSO₄ present in the impure sample must have been measured before calculating the number of moles.

Ajay bought bottle that was labelled as distilled water. He suspected it to be tap water. What test he could use without adding any chemical in it to find out for sure?

Answers

Answer:

Ajay should pass electric current through the water and connect a bulb to the circuit. If the bulb glows, it means that the water is tap water or else, it is distilled water.

Explanation:

This is because tap water contains little impurities like ions of some salts etc., which help in the conduction of electricity. But, distilled water is pure water and doesn't have any ions present in it. So, it doesn't conduct electricity.

Hope this helped

Ajay can test the distilled water by performing the electricity conduction test.

Distilled water has been the water that has an absence of ions and electrolytes. It has been a poor conductor of electricity.

The tap water has been constituted with minerals, electrolytes, and impurities, which results in the addition of conductivity to the water.

To test whether the water has been distilled or not, the circuit test can be performed The water has dipped wires connected with a battery and a bulb. the distilled water is a poor conductor did not allow the bulb to glow. However, with tap water bulb glow.

Thus, to test the water to be distilled or tap, the electricity conduction test has been performed.

For more information about distilled water, refer to the link:

https://brainly.com/question/2403536

calculate the mass of sodium trioxocarbonate(iv) produced by the complete decomposition of 16.8g of sodium hydrogen trioxocabonate(iv)

Answers

Answer:

question for you how does this app work old tell me

2 moles or 168 g of sodium hydrogen trioxocarbonate produce 106 g of sodium trioxocarbonate. Thus 16.8 g of sodium hydrogen trioxocarbonate will produce 10.6 g of sodium trioxocarbonate.

What is decomposition?

Decomposition is a type of chemical change in which the a compound decompose or break into its constituent compounds or molecules.

The decomposition of sodium hydrogen trioxocarbonate is written as follows:

[tex]2NaHCO_{3} \rightarrow Na_{2} CO_{3} + H_{2}O +CO_{2}[/tex]

According to this equation 2 moles or 168 g of sodium hydrogen trioxocarbonate produce 106 g or one moles of sodium trioxocarbonate. Molar mass of sodium bicarbonate is 84 g thus 2 moles are 168 g.

Thus, the mass of sodium trioxocarbonate formed from 16.8 g of sodium hydrogen trioxocarbonate is calculated as follows:

mass of product = 16.8 × 106 /168 g

= 10.6 g.

Hence, Thus 16.8 g of sodium hydrogen trioxocarbonate will produce 10.6 g of sodium trioxocarbonate.

To find more about decomposition reactions, refer the link below:

https://brainly.com/question/8009068

#SPJ2

What does one mole of H2O correspond to?
A.
6.02 × 1023 molecules of H2O
B.
6.02 × 1023 atoms of H and 6.02 X 1023 atoms of O
C.
6.02 × 1023 atoms of O
D.
6.02 × 1023 atoms of H
E.
6.02 × 1023 × 2 atoms of H

Answers

Answer:

Its A

Explanation:

Just took the test and got a 100%

Heat being transferred from a hot pan to our food while cooking is an example of... *

conduction
convection
radiation
transpiration

Answers

A.conduction i hope it helps

Answer:

conduction

Explanation:

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