Please help! I don’t have a time limit, so take you’re time!

Answer:

I think you would pretty much get the answer wrong.

You won´t get full credit. sorry for your wrong test answer, :(

Explanation:

The correct answer would be copper and mercury do NOT react with hydrochloric acid.

Answer:

In a solid, they're really close together and vibrate a LITTLE, in a liquid they're kinda close together but change movement because water will change shape depending on the container they're in. For gas they are spread far from each other and vibrate A LOT

Explanation:

Answer:

4s, 3d, 4p

Explanation:

(3d,4s,4p) and (4p, 3d, 4s) both are decreasing energy, while (4s,4p,3d) is incorrect order it should be (4s,3d,4p).

Answer:

1 = one

2 = fluorine

3 = Bromine

4 = increase

5 = first increaseas and then decreases

hope it helps

Answer:

the final reaction

Explanation:

a chemical reaction is caused from the two reactants

Answer:

There are a number of ways that you could investigate the effect of changing the temperature on the rate of a reaction in Chemistry. ... This includes using apparatus safely, and monitoring chemical changes.

Explanation:

There are three main methods of measuring rate:

measuring the volume of gas given off by a reaction over time.

measuring the loss of mass of a reaction over time when a gas is produced.

Answer: When they do, they transfer some of their energy. The energy is transferred from particle to particle. It is sort of like a row of dominoes falling over. In this process, thermal energy moves through a substance. It can even move into other nearby substances. In Figure above, conduction occurs between particles of the metal in the pot. It also occurs between particles of the pot

Explanation:

Answer:

Because you can see the stars everynight pretty much, but the planets you need a telescope for. Plus, the planets are moving everynight making night and day so they all move! :)

Explanation:

Hope this helps! Brainliest plz?

Answer:

the atom is held together by the electrostatic attraction between the positively charged nucleus and the negatively charged electrons surrounding it, the stability within chemical bonds is also due to electrostatic attractions.

Explanation:

Answer:

Some type of bond (example: hydrogen bonds between water)

Polarity can also hold atoms together

hope this Helped!

Answer:

lets just say he got pay back btw it's lunar eclipse babe

Explanation:

Answer:

A

Explanation:

Just took the quiz

The irregularity of the chart means that, monitoring concentrations of pollutants has been ineffective.

The EPA is the environmental protection agency which takes care of the set limits of pollutamts that are released into the environment. The chart shows the monitoring of the concentrations of pollutants over a period of time.

We can see tat the chart is so irregular. The irregularity of the chart means that, monitoring concentrations of pollutants has been ineffective.

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Answer:

A few elements combine to make many compounds.

Explanation:

The heading of the reading is 'Few elements, many Compounds'. The reading has focused on the process involved in the formation of elements and compounds. In the Hawaiian Islands the elements are found in abundance. These elements combine together to form compounds. The mountains, greenery, rocks and living matter are made up of many elements and compounds. The elements present helps in forming various compounds.

Answer:

The correct answer to your Question is B.

Explanation:

Hope you have a great day :)

The substance from the options that will dissolve most rapidly is : ( B ) Powdered sugar in hot water.

Increase in temperature, state of solute and volume will determine the rate at which solubility occurs. The powdered sugar is in less solid state when compared to sugar cubes and therefore will dissolve most rapidly in hot water than a sugar cubes in hot water.

Hence we can conclude that The substance from the options that will dissolve most rapidly is : ( B ) Powdered sugar in hot water.

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Explanation:

The enzyme 's active site binds to the substrate. Increasing the temperature generally increases the rate of a reaction, but dramatic changes in temperature and pH can denature an enzyme, thereby abolishing its action as a catalyst. ... When an enzyme binds its substrate it forms an enzyme-substrate complex.

Answer:

13.7 degrees.

Explanation:

Answer:

Explanation:

In order to have a full shell it needs eight. It is easier to gain three electrons instead of losing five. Therefore phosphorus tends towards P3−

Answer:

pretty sure they're called groups

Answer:

250 ml

Explanation: I got it right on the lab.

The size of the volumetric flask that would you use to create a 1.25 M solution using 29.75 g of MgCl₂ is 250mL.

How do we calculate volume of the solution?

Volume (V) in liter of the solution will be calculated by using the molarity (M) formula as:

M = n/V, where

n is the moles of the solute and it will be calculated by using mass as:

n = W/M, where

W = given mass

M = molar mass

Moles of 29.75g of MgCl₂ = 29.75g / 95g/mol = 0.313 mol

Given that molarity of solution = 1.25M

On putting values on the equation of molarity we will get the value of volume as:

V = 0.313 / 1.25 =  0.2504 L = 250mL

For the preparation of 250 mL of MgCl₂ solution we required the volumetric flask of 250 mL.

Hence volumetric flask of 250mL is required.

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Answer: a. 249.5 g/mol

b. 1.996 g

c. Measure 1.996 g of [tex]CuSO_4.5H_2O[/tex] and dissolve in water until the volume is 400 ml

Explanation:

Molar mass is the sum of atomic masses of all the elements present.

Thus molar mass of [tex]CuSO_4.5H_2O[/tex] = 1(63.5)+1(32)+4(16)+5(18) = 249.5 g/mol

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

To calculate the number of moles for given molarity, we use the equation:

[tex]\text{Molarity of the solution}=\frac{\text{given mass of solute}\times 1000}{\text {Molar mass of solute}}\times \text{Volume of solution in ml}}[/tex]

[tex]0.02mol/L=\frac{x\times 1000}{249.5g/mol\times 400}[/tex]

[tex]x=1.996 g[/tex]

c. We need to measure 1.996 g of [tex]CuSO_4.5H_2O[/tex] and dissolve it in water to make the volume 400 ml.

Answer:

Sam's average speed  = 2.22 m/s

Explanation:

The average speed refers to the speed with which a distance is covered within a particular time duration. The average speed of a moving object can be obtained by summing up all the varying speeds as the object moves from one point to another, within a particular time frame.

Sams average speed can be calculated using this formula:

Average speed = distance / time

Distance covered = 2000 meters

Time taken to cover the distance = 9:15 am - 9:00 am = 15 minutes = 15 X 60 seconds = 900 seconds

Sam's average speed = 2000meters / 900 secs = 2.22 m/second

Answer: tell me

Explanation:

i do not no

In modern times, we know that the elements in a given group (also known as a family or column) have the same number of valence electrons, with ground state configurations having a consistent pattern, for instance:

F 1s2 2s2 2p5, Cl 1s2 2s2 2p6 3s2 3p5, Br 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5, etc.

Of course, the ground state configurations play a major role in determining how an element reacts and what compounds it forms. Thus, the elements in a given group have similar properties.

The structure of the table also predicts how the properties vary. For instance, atomic radius increases down a group as does metallic character.

Explanation:

Answer:

They are both building blocks

Explanation:

DNA builds up life while legos build things

Answer:

C

Explanation:

Answer:

True

Explanation:

Generally makes sense.

Answer:

chlorine

General Electronic configuration of the group number 2 elements is, . General Electronic configuration of the group number 17 elements is, . From this we conclude that the chlorine is the element which has the greatest number of valence electrons available for bonding. Hence, the correct option is, Chlorine

Explanation:

Explanation:

group 18

MARK AS BRAINLIST ANSWER PLEASE

Answer:

To remove waste products

Explanation:

I think

Answer:

to remove waste products

Answer: There are about 0.28 molecules in 43.9 g of carbon tetrachloride. If you are rounding up, it would be 0.3

Explanation:

Answer:

103 so easy so free dogwater

Explanation:

Mass percentage does not have any unit as numerator and denominator contains the same unit. The mass of  rock is 2.56×10⁶g when it contains 1.0 x 10³ kg of iron in it.

Mass percentage represents the the percentage of each element that is making a particular compound.

Mathematically,

Percentage of mass = (component’s mass ÷ total mass) x 100%

Percentage of mass of ferric oxide is =  78% by mass in rock

From this we can interpret the following

100 g of rock contains = 78gram ferric oxide

(100÷78)g of rock contains= 1 gram of ferric oxide

mass of iron in rock =1.0 x 10³ kg = 1.0 x 10⁶ g

(100÷78)×1.0 x 10⁶ g of rock  = 1.28×10⁶g of ferric oxide

now 1 mole of ferric oxide contains 2 atoms of iron, so the total mass of iron is 1.28×10⁶g ×2=2.56×10⁶g of iron.

Therefore the mass of  rock is 2.56×10⁶g when it contains 1.0 x 10³ kg of iron in it.

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Answer:

The balls in Pair 2 have a greater mass than the balls in Pair 1.