Chemistry High School

Just need the two blanks filled :)

Answers

Answer 1

Answer:

Dont answer this question its an online exam question

Explanation:

Related Questions

Fill in the blank. (Copper has a charge of 2+)
Cu+ AgNO3 → Ag +

Answers

Answer:

Cu(NO3)2

Explanation:

Cu+AgNO3--->Ag+Cu(NO3)2

[tex]Cu+AgNO_3[/tex] → [tex]Ag+Cu(NO_3)_2[/tex] is the complete reaction.

What is a chemical reaction?

A chemical change occurs when two or more substances combine to form a new substance.

[tex]Cu+AgNO_3[/tex] → [tex]Ag+Cu(NO_3)_2[/tex] is the complete reaction.

Copper and silver nitrate react to form cupric nitrate and silver.

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1. Which of the following best explains the motion of the box on the table?

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Answer:

The box is at rest

Explanation:

not moving object

HELLPPPPPP PLEASEEEE!!!!!

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The first one is have increased kinetic energy
(This is because the molecules gain more heat and therefore more kinetic energy)

The last one is lose energy
(This is because there is now less heat and therefore less energy)

1. Increased kinetic energy
2. Lose energy

please help i don’t know this at all i am in a test

Answers

B . 5N in the opposite direction

balance the following equation FeC²+Cl². FeCl³

Answers

Answer:

this equation is not proper see that where is the reactant.

Explanation:

give give a proper question and I will

if fecl2 + c2 gives a fecl3 where does the carbon compound go

Answer:

2FeCl2 + Cl2 → 2FeCl3

Explanation:

Shale is a sedimentary rock that can can be metamorphosed into slate by

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The soft, clay-rich rock known as shale, when subjected to pressure becomes a harder rock called slate. ... Even coal can be metamorphosed; bituminous (soft) coal, a sedimentary rock, can be changed into anthracite, or hard coal.

Heellllp plzz
thanks

Answers

Answer:

Tap test

Explanation:

Answer:

the rest dont sound as reasonable to me so i would say C

Explanation:

build a prototype or test model of the invention

Answers

What invention I want to help you but I am confused

Please please help
1. If you have 400 grams of water, how many moles do you have?
2. If you have 300 grams of carbon, how many moles do you have?

Answers

Answer: 6 moles of Carbon.

Explanation: One mole of Carbon is equal to 12 grams of Carbon, so you would divide 72 by 12 and the answer would be 6.

Which of the following keeps the planets in their orbits in the Solar System?
A friction
B gravity
C magnetism
D pressure

Answers

Answer:

B- gravity

Explanation:

Gravity is a force in which everything in the universe is trying to pull everyother thing towards themsef. Here, the sun's gravity keeps the planet in orbit.

I hope im right! !!

HELP ASAP!!!!!!!
Nieko purchases a box of granola cereal that has a mass of 0.312 kg. When he gets
home, he sorts the cereal into groups: oats, raisins, and nuts. Next, he measures the
mass of each group. What will Nieko find when he adds together the mass of each
group?

Answers

Answer:

girlll we got da same question we need help

Nieko purchases a box of granola cereal that has a mass of 0.312 kg, then according to law of conservation of mass, the mass of each group is 0.312 kg.

What is law of conservation of mass?

According to law of conservation of mass the mass in isolated system can neither be created nor destroyed by chemical reaction and physical transformation but it transfer from one form to another.

When wood burn the mass of soot, gases and ashes is equal to the original mass of charcoal and the oxygen when it first created is one of the best example of law of conservation of mass.

Thus, Nieko purchases a box of granola cereal that has a mass of 0.312 kg, then according to law of conservation of mass, the mass of each group is 0.312 kg.

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which question is the student most likely trying to answer?

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Answer:

Explanation:

2. Each type of atom is called an element. Which part of the atom give the
atoms its Identity?

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The smallest particle of an element which is indivisible and takes part is chemical reaction as a whole without division is called an atom.

the three fundamental particles that identify the atoms are protons, neutrons and electrons.

3. Which of these statements is false?
A. Electrons have a negative charge
B. Electrons have a mass of 1 amu
C. The nucleus of an atom is positively charged
D. The neutron is found in the nucleus of an atom

Answers

the answer is B. ......

two oxides, X and Y are added seperately to dilute sulfuric acid and dilute sodium hydroxide. X reacts with dilute sulfuric acid but Y does not react. Y reacts with aqueous sodium hydroxide but X does not react. which type of oxide are X and Y ?

Answers

Answer:

Explanation:

x basic and metallic while y is acidic

The study of chemicals is called chemistry.

The correct answer is B.

The compound which has oxygen in it is called oxide. According to the question, the element is react with the acid and base.

The X only reacts with the acidic compound but not basic compound hence the element X is basic in nature. while Y only reacts with the basic compound, not X, hence the Y element is acidic in nature.

Therefore, the correct answer is B.

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How much heat does it take to move 45 g of ice at -25°C to water at 31°C?

Answers

i am only in 6th grade i dont know this

Help plz pozlzlzksj help

Answers

Answer:

increase moles of gas inside

Explanation:

Answer:

Its ( C )- Decrease the temperature of the gas inside the basketball

Explanation:

To make sure the balloon doesn't inflate so much it bursts you should NOT completely inflate the balloons when you know the temperature will increase!

An reading of 8 on the pH scale is indicative of?

Answers

Answer:

Basic or alkaline

Explanation:

ph 7 is neutral

below 7 is acidic

above 7 is basic or alkaline

Answer:

[tex]\boxed {\boxed {\sf Weak \ base}}[/tex]

Explanation:

The pH scale which classifies a solution's acidity or basicity.

A pH below 7 is acidic. This means it has more hydrogen ions. A pH equal to 7 is neutral. This has equal hydrogen and hydroxide ions.A pH above 7 is basic. This has more hydroxide ions.

We are given a reading of 8. This is above 7, but not much greater. Therefore, it could be classified as a weak base.

How can a paperclip float on water? Use the
word 'surface tension' in your answer,

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It seems to defy the laws of physics, but a paper clip made of steel can indeed float on the water surface. The high surface tension helps the paper clip - with much higher density - float on the water.

20 points to whoever can answer these 3 questions correctly

Answers

Answer:

1.true

2.2

3. false

Explanation:

.........

What does 10% humidity in a weather report indicate?
A)the level of humidity is high.
B)the level of humidity is low.
C)the level of humidity is moderate.
D)the air can not hold anymore water.

Answers

Answer:

the humidity is the % of water in the air and it is out of 100% of the air. so 10/100 is low

Answer:

Explanation:

30%-50% is considered moderate. Anything below 30% is considered dry, anything above 50% is considered high. I hope this helps!

There are three bulbs powered by a battery. What will happen if the middle light burns out.

Answers

Answer:

ABC

Explanation:

A thick, oily liquid found deep in the earth that is refined and used as a source for gasoline is called _____________?
Petroleum
Reserve
Lumber
Coal

Answers

It would be A, Petroleum.

Hope this helped!

-William

A solution of 0.220 g of KIO3 is prepared in 50 ml volumetric flask. 2.00 mL of this solution is pipetted into a beaker with 8.00 ml distilled water, to give 10 ml of diluted KIO3. To this, 10.00 mL of starch sulfite was added. What would be the initial concentration of IO3- in this final solution

Answers

Answer:

0.00044 g/mL

Explanation:

First, 0.220 g of KIO₃ are dissolved in 50 mL, so the concentration at this point is:

0.220 g / 50 mL = 0.0044 g/mL

Then 2.00 mL of this solution are added to 8.00 mL of water (final volume = 10.00 mL). We calculate the concentration of the resulting solution:

0.0044 g/mL * 2.00mL / 10.00mL = 0.00088 g/mL

Finally, to this 10 mL solution, another 10.00 mL were added. Thus the KIO₃ (or IO₃⁻) concentration is:

0.00088 g/mL * 10.00mL / 20.00mL = 0.00044 g/mL

please answer as quick as possible

Q2. Which of the following elements is an alkali metal
A Potassium
B Chlorine
C Neon
D Krypton

Answers

Answer:

A - potassium........ M

Answer:

POTASSIUM

Explanation:

In a rate law the rate constant k, depends on which condition?

Answers

Answer:

Temperature is the awnser

The answer is temperature

ok so can someone help me with my guy problems

Answers

Answer:

ofc! whats ur question my guy

Explanation:

Answer:

sure

Explanation:

During ANY type of phase change, which of the following is TRUE? *

1. The temperature changes
2. The energy increases
3. The energy decreases
4. The temperature stays the same

Answers

the ones that are true are 1,2

In a flexible container, when the temperature of a gas increases, the volume of the gas will increase.

Please select the best answer from the choices provided

T
F

Answers

Answer:

true

Explanation:

hope this helps, I took the test too

elect the correct answer.

Which atom or ion is the largest?

A.
K
B.
K+
C.
Ca
D.
Ca2+
E.
Li

Answers

Answer:

Ca2+ I'm not sure hahahahhahah

Answer:

hope it is helpful..

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