the number of cobalt atoms in 0.00103 mole of cobalt​

Answers

Answer 1
It’s is 2.75 g of cobalt

Related Questions

From the video " Are Wormholes The Answer To Time Travel?", how are worm holes described?

Answers

In the video "Are Wormholes The Answer To Time Travel?"Wormholes have been described as hypothetical space-time tunnels or bridges connecting two different locations in space-time allowing faster-than-light travel or perhaps time travel.

What does the video for "Are Wormholes the Answer to Time Travel" Say?

Investigating the question of whether wormholes can be used for time travel is "Are wormholes the answer to time travel?" The film explains that wormholes are hypothetical constructs that can join two different points in space-time, allowing travel faster than the speed of light and even time travel.

The video discusses the characteristics of wormholes, including their size, shape, and possible existence. In the film, several ideas and models, such as Einstein's theory of general relativity and the idea of ​​negative energy, have been put forward by physicists and other scientists to explain the potential of wormholes.

Therefore, in the video "Are Wormholes The Answer To Time Travel?"Wormholes have been described as hypothetical space-time tunnels or bridges connecting two different locations in space-time allowing faster-than-light travel or perhaps time travel.

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Which of the following is an example of an insoluble substance being added to water?

When added to water, the substance quickly falls to the bottom and then dissolves.
The substance has disappeared after being poured into the water.
The substance makes the water cloudy and then forms a layer on top of the water.
The water remains clear after the substance is stirred into the water with a spoon.

Answers

Answer:

Explanation: “Insoluble” generally means that a substance does not dissolve in water. Some examples include: sand, fats, wood, metals, and plastic. When we put them in water and try to mix them, they will not dissolve.

Explanation:

c) Which one of the following compounds will react with perrhenic acid? Tick one box.

ethane
hydrochloric acid
potassium carbonate
sodium chloride

Answers

Answer:

I believe is the correct answer

Explanation:

hydrochloric

Pots A and B both have plain soil, bean seeds, and the same amount of light. Pot B receives more water (see table). After 50 days the plants are measured. Based on the data, which of the following conclusions can NOT be drawn from the data table?




A plant that receives more water will have more mass

The amount of water a plant receives affects its growth

The taller a plant is, the more mass it has

A plant that receives more water will grow t

Answers

A. water per day: 20 m/ height: 24cm/ mass: 3.1g B. Water per day: 60 ml/ height: 24cm/ mass: 9.6g

I think that the answer to this question is the third option. These two plants are of the same height but plant B has more mass. So therefore the statement is not true.

If this is a multiple-choice, then I would also select the fourth option along with the third. Plant B received more water, but it is the same height as plant A.

I hope my answer is satisfactory, and that I was of help to you.

-Toremi

What does Earth rotate on? (2 points)

a
Its axis

b
Its continents

c
Its countries

d
Its poles

help asap i'll give u 100 points and brainliest

Answers

The earth rotates on its axis so it’s A

Answer:

its axis

Explanation:

the earth rotates on its axis 24 hrs a day in relation to the sun.

What are 3 types of insects that belong to Phylum ?

Answers

Answer:

3 examples are beetles, a fly, and bees. Others include ants lady bugs and butterflies

Explanation:

Explain what the color change indicated about the changes in the concentrations of Co(H2O)62+ and CoCl42– in each trial.
Trail one
starting color: purple
added 3 drops of Hcl(aq)
end color:blue

Trail two
start color is :blue
added 3 drops of AgNOv3(aq)
and White stuff forms at the bottom.
end color is: light pink

Answers

Addition of HCl  leads to te formation of blue CoCl4^2– while the addition of AgNO3 leads to the formation of pink  Co(H2O)6^2+.

What is equilibrium?

Dynamic equilibrium is said to have been attained in a reaction when the rate of forward reaction is equal to the rate of reverse reaction. Now we have the equilibrium as shown in the image attached.

When we add HCl as in trial 1, the equilibrium position is shifted to the left and blue CoCl4^2– is formed. When we add AgNO3, the Cl^- is precipitated out of solution and the equilibrium shifts towards the left to yield pink Co(H2O)6^2+.

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Spring tides happen 2 times each month at the _and_phases

Neap tides happen 2 times each month at the _and_phases​

Answers

Answer:

Spring tides happen 2 times each month at the New and Full phases

Neap tides happen 2 times each month at the First Quarter and Third Quarter phases

Determine whether Z is a “poison”. Explain your reasoning.

Answers

The substance Z will be a poison if it produces adverse effects on th body even in small quantities.

What is a poison?

A poison is a substance which when ingested into the body of an organism causes harm or injury to that organism.

Poisons can be in gaseous, solid or liquid form.

Poisons may be natural or synthetic in nature.

The characteristics of poison include:

The produce adverse effects in the body they are toxic even in small amounts

Therefore, the substance Z will be a poison if it produces adverse effects on th body even in small quantities.

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What are the steps of natural selection?

Answers

Answer:

The five steps involved in the process of natural selection are

Variation • Inheritance • Selection • Time • Adaptation

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•Expert•

Brainly Community Contributor

Neon and argon are both in Group 18 of the periodic table. Which property do they most likely share (
O silver color
O strong odor
O metallic texture
O low or no reactivity

Answers

Explanation:

low or no reactivity ....

Neon and argon are both in Group 18 of the periodic table. The property that they are most likely to share is low or no reactivity. The correct option is d.

What are argon and neon?

A chemical element found in the periodic table is argon. It is the third most common gas in the atmosphere and has an atomic number of 18.

In the periodic table, neon is a chemical element. It is a monatomic, noble gas with the atomic number 10 that is found in the environment.

Although a few liquid molecules do rise to the top, the vast majority stay close to the bottom. Furthermore, the molecules in the gas phase move more swiftly than those in the liquid phase.

Therefore, the correct option is d, low, or no reactivity regarding the mutual property of argon and neon.

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Which of the compounds below will dissociate in water? Check all that apply.

Ba(NO3)2
CaSO4
CO2
H2CO3
Mg3(PO4)2

Answers

The compounds that can dissociate in water from the options given below are;

Ba(NO3)2

CaSO4

Mg3(PO4)2

What is dissociation of compounds?

Dissociation of compound is the process by which compounds degraded into smaller unit which can also recombine to form larger one in another condition.

When ionic compounds dissociate in water, the water molecules separate the ionic crystal. This is because of the attraction between the positive and negative ions in the crystal.

Therefore, The following compounds dissociate in water.

Ba(NO3)2

CaSO4

Mg3(PO4)2

Learn more about dissociation of compounds here.

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Why are water and hydrogen peroxide different substances even though they are both made up of hydrogen and oxygen atoms?

Answers

Maybe they have a different number of hydrogen and oxygen atoms they’re made up of? Just a guess tbh

what do all fossils fuels have in common

Answers

[tex] \mathrm\pink{Almost \: all \: fossils \: are \: in \: sedimentary \: rocks.} [/tex]

2H2O --> 2H2 + O2 If you begin with 20 grams of H2O, how many moles of O2 are produced?

Answers

Answer:

17.78 gm

Explanation:

2 H20 mole weight = 36 gm

   which leads to 32 gm   O2

36 / 32   =  20 / x      x = 17.78 gm

Adjust the alkalinity from 70 ppm to 100 ppm in a 250. 000 gallon pool using sodium bicarbonate

Answers

For an adjustment of the alkalinity from 70 ppm to 100 ppm in a 250,000 gallon pool using sodium bicarbonate, the amount of added chemical  is mathematically given as

X=105lbs

What is the amount of added chemical?

Generally, the equation for the Chemical added  is mathematically given as

X=requred usage*desired change/10ppm*pool of gallon/10000

Therefore

X=1.4*(100-70/10)*(250000/10000

X=105lbs

In conclusion, the added chemical

X=105lbs

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Explain the difference between current electricity and magnetism.

Answers

Answer:

Electricity can be present in a static charge, while magnetism's presence is only felt when there are moving charges as a result of electricity. In simple words, electricity can exist without magnetism, but magnetism cannot exist without electricity.





HOPE THIS HELPS, HAVE A GREAT DAY!!~

Explanation:

Solve
A gas occupies 9 L at a temperature of 325K. What is the volume at 450?
O 125L
ОЗК
O 302
O 87 L

Answers

The volume of a gas that occupies 9 L at a temperature of 325K is 12.46L.

How to calculate volume?

The volume of a given gas can be calculated using the following Charle's law equation:

V1/T1 = V2/T2

Where;

T1 = initial temperatureT2 = final temperatureV1 = initial volumeV2 = final volume

V1 = 9LV2 = ?T1 = 325KT2 = 450K

9/325 = V2/450

325V2 = 4050

V2 = 4050/325

V2 = 12.46L

Therefore, the volume of a gas that occupies 9 L at a temperature of 325K is 12.46L.

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Balancing Chemical equations
20.​

Answers

Answer:

Count each type of atom in reactants and products. ...

Place coefficients, as needed, in front of the symbols or formulas to increase the number of atoms or molecules of the substances. ...

Repeat steps 1 and 2 until the equation is balanced

Explanation:

Step 1: Coefficients Versus Subscripts. When approaching a chemical equation, it is important that you understand the difference between coefficients and subscripts. ...

Step 2: Sum the Atoms. ...

Step 3: Balance the First Element. ...

Step 4: Repeat for the Other Elements. ...

Step 5: Tips.

Answer:

2C6H6 + 15O2 = 12CO2 + 6H2O

Explanation:

This is a combustion reaction meaning a substance (in this case Benzene or C6H6) reacts with oxygen gas (O2) and releases energy in the form of light and heat.

so Benzene (C6H6) and Dioxygen (O2) are reactants meaning they are on the left side of the equation

Carbon Dioxide (CO2) and Water (H2O) are the products meaning they are on the right side of the equation

To balance an equation you need an equal amount of each element/compound/polyatomic on each side of the equation

so 2C6H6 + 15O2 = 12CO2 + 6H2O:

(2•6) = 12 C = (12•C) = 12 C ~ 12C = 12C

(2•6) = 12 H = (2•6) = 12 H ~ 12H = 12H

(15•2) = 30 O2 = [(12•2) • (6•1)] = 30 O2

~ 30 O2 = 30 O2

so the equation is now balanced

feel free to ask if you have any other questions

hope this helps :)

Helpppppppppppppppppp

Answers

Answer:

Ch4-Methane ( 5 atoms )

CO2- Carbon Dioxide ( 3 atoms )

H2O- Water ( 3 atoms )

2O2- Oxygen ( 2 atoms )

Which of the following describes carbohydrates?

Answers

Answer:

They are converted into glucose, they are a source of energy for the body

Explanation:

that's the answer

Complete:
If two or more elements or chemical compounds come into contact with one another and there is enough ________________present, a chemical change may take place.

a. When a substance undergoes a chemical change, the chemical ______________of the substance is altered.
b. A chemical change can also be called a chemical _______________.

Answers

if two or more elements or chemical compounds come into contact with one another and there is enough COMPOUND present, a chemical change may be take place.
A. PROPERTY
B.
CHEMICAL REACTION

Calculate the volume of a solution of 3.6 M NH4Cl needed to prepare 350.0 mL of 1.24M NH4CH
Select one:
a. 120 mL
b. 12.0 mL
c. 967 ml
d. 96.7 ml

How many grams of ammonium chloride are in the solution you created in the above problem Select one:
a. 23.28
b. 0.438
c 53.58
d. 232 23​

Answers

Answer:

select one :c

select two:d

Calculate the molarity of a solution prepared by diluting 7.0 mL of 4.0 M solution to a volume of 30 mL.

Answers

Considering the definition of dilution, the molarity of a solution prepared by diluting 7.0 mL of 4.0 M solution to a volume of 30 mL is 0.93 mL.

What is diluion

First of all, you have to know that when it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution.

Dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.

In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.

A dilution is mathematically expressed as:

Ci×Vi = Cf×Vf

where

Ci: initial concentrationVi: initial volumeCf: final concentrationVf: final volume

Molarity of the solution in this case

In this case, you know:

Ci= 4 M Vi= 7 mLCf= ?Vf= 30 mL

Replacing in the definition of dilution:

4 M× 7 mL= Cf× 30 mL

Solving:

(4 M× 7 mL)÷ 30 mL= Cf

Cf= 0.93 mL

In summary, the molarity of a solution prepared by diluting 7.0 mL of 4.0 M solution to a volume of 30 mL is 0.93 mL.

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Which state of matter of water is the most dense ?

A. Gaseous water vapor
B. Liquid water
C. Solid ice
D. Water and ice are equally dense.

Answers

The answer to that is (B. Liquid water)

A mutation can be defined as a change in an organism's

transcription.

phenotype.

genotype.

proteins.

Answers

Answer:

Genotype

Explanation:

A mutation is the change is DNA, aka the genotype

sodium oxide can react with water to produce sodium hydroxide. in the reaction, how many moles of sodium hydroxide will be produced.

Answers

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

How did Mesosaurus fossils get separated?
First, state your claim about how the Mesosaurus fossils got separated. Then, use evidence to support your claim. For each piece of evidence you use, explain how the evidence supports your claim. I need 2 reasoning and two pieces of evidence. help l will give you 15 points if they answer this now!

Answers

Answer: try thinking with your eyes close

Explanation:

Is god real I don’t really no but say yes

Answers

Answer:

Yes

Explanation:

We have been created by him therefore we would not have been created if there was no God.

Increasing ions in solution will decrease the pH of a solution, while increasing the. ions in solution will increase the pH of a solution. Fill the Blank
Help me!

Answers

Answer:

Increasing the H+/H3O+ will decrease the pH, while increasing the OH- ions will increase the pH

Explanation:

so pH=-log(H), which means that the smaller H gets to 0, the more the pH rises. The larger the H+ gets, the smaller the pH
if H is 1, then pH is 0
if H is 0.1, then pH is 1
if H is 0.01, then pH is 2
and so on
if H is 0.00000000000001, then the pH is 14
When OH goes up, H goes down, so
if OH is 0.00000000000001, then the ph is 0
if OH is 0.0000000000001, then the pH is 1
and so on
If the OH is 1, then the pH is 14

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