If the atomic number of an element is 16, what is the element's identity?
What is its atomic mass

Answers

Answer 1

Answer: The element is sulfur and the atomic mass is 32.07

Explanation: wasn’t sure what you were asking so gave you both


Related Questions

Which of the following happens to the particles when the temperature of liquid water drops?
kinetic energy decreases
kinetic energy increases and then decreases
kinetic energy increases
kinetic energy stays constant

Answers

Answer:

The Kinetic energy decreases

Explanation:

because the speed of the molecules slows down.

2. Platinum metal has a density of 21.4 g/mL. If the block measures 3 cm, by 0.03 m, by 40 mm
how much does it weigh in milligrams?

Answers

Answer:

80mg

Explanation:

Given parameters:

Density of Platinum metal = 21.4g/mL

Dimension of the metal  = 3cm by 0.03m by 40mm

Unknown:

Weight of the metal in milligrams?

Solution:

Density is the mass per unit volume of a substance.

Mathematically;

          Density  = [tex]\frac{mass}{volume}[/tex]

Volume of the platinum metal  = l x w x h

 Let us convert the dimension of the metal to the same unit;

            3cm x 0.03m x 40mm

    convert to cm;

           100m = 1cm

           0.03m  = [tex]\frac{0.03}{100}[/tex]   = 0.0003cm

     -- 40mm;

            1mm = 0.1cm

           40mm  = 40 x 0.1  = 4cm

Volume of the metal  = 3 x 0.0003 x 4  = 0.0036cm³

1mL = 1cm³; so volume  = 0.0036mL

     Mass of the metal  = 21.4 x 0.0036  = 0.08g

       1g  = 1000mg

     0.08g  = 0.08 x 1000 = 80mg

       

20 mL of a gas at 200K is heated until the new volume is 55 mL. What is the final temperature of the gas?

answer options:
4.0 K
5.5 K
400K
550 K

Answers

Answer:

550 K

Explanation:

Given the following data;

Original Volume, V1 = 20mL

Original Temperature, T1 = 200K

New Temperature, V2 = 55mL

To find new temperature T2, we would use Charles' law.

Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Charles is given by;

[tex] VT = K[/tex]

[tex] \frac{V1}{T1} = \frac{V2}{T2}[/tex]

Making T2 the subject of formula, we have;

[tex]T_{2} = \frac{V2}{V1} * T_{1}\\[/tex]

Substituting into the equation;

[tex]T_{2} = \frac{55}{20} * 200\\T_{2} = \frac{11000}{20}\\T_{2} = 550K[/tex]

Therefore, the new temperature is 550K.

how many moles of Fe(OH)2 are required to produce 7.4 moles of Fe3(PO4)2

Answers

Answer:

22.2 mol

Explanation:

Considering the reaction stoichiometry, 22.2 moles of Fe(OH)₂ are required to produce 7.4 moles of Fe₃(PO₄)₂.

The balanced reaction is:

3 Fe(OH)₂ + 2 H₃PO₄ → Fe₃(PO₄)₂ + 6 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

Fe(OH)₂: 3 moles H₃PO₄: 2 molesFe₃(PO₄)₂: 1 mole H₂O: 6 moles

Then you can apply the following rule of three:  if by reaction stoichiometry 1 mole of Fe₃(PO₄)₂ requires 3 moles of Fe(OH)₂, 7.4 moles of Fe₃(PO₄)₂ require how many moles of Fe(OH)₂?

[tex]amount of moles of Fe(OH)_{2} =\frac{7.4 moles of Fe_{3} (PO_{4} )_{2} x3moles of Fe(OH)_{2} }{1mole of Fe_{3} (PO_{4} )_{2} }[/tex]

amount of moles of Fe(OH)₂= 22.2 moles

Finally, 22.2 moles of Fe(OH)₂ are required to produce 7.4 moles of Fe₃(PO₄)₂.

Learn more:

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Explain What is an elementary reaction and how is it related to a reaction mechanism

Answers

Answer:

The sequence of individual steps, or elementary reactions, by which reactants are converted into products during the course of a reaction is called the reaction mechanism. The overall rate of a reaction is determined by the rate of the slowest step, called the rate-determining step.

Explanation:

All of the different organisms interacting in a pond make up
1.) a community
2.)the water cycle
3.) a population
4.) the habitat

Answers

Answer:

they would make up a population

Explanation:

all the inhabitants of a particular town, area, or country.

the population of frogs are very difficult to catch

1). A community is the answer

Plants prevent a) soil erosion by wind or water b) soil erosion due to a forest station c) The loosening of soil and they bind the soil with the help of the roots

Answers

Answer:

The loosening of soil and they bind the soil with the help of the roots

Explanation:

Here, we want to know how plants prevent erosion by wind or water.

The way they do this is by binding the soil with their roots such that it will not be easy for the erosion agent to erode the surface.

How they do this is by making sure that the soil

particles are binded together with their roots which helps to keep the particles of the soil intact and not eroded

Answer:

c

Explanation:

help me please !! is it A,B,C, or D ???

Answers

Ok, after doing an immense amount of research I came up with the most logical answer.

A. Is indicated by a negative enthrall sign.

Reasoning: an endothermic reaction is ice melting and the energy being more than its surroundings. Not specified to ice but as an example, ice is endothermic. That puts d and b out of the running leaving you left with a and c.

When I searched up enthalpy, it said “When a substance changes at constant pressure, enthalpy tells how much heat and work was added or removed from the substance.” Which is similar to c, right? Yeah, meaning both a and c are similar in that aspect.

The reason I decided to go with a is because heat is NOT released into the surrounding, exothermic reactions release energy and heat into the surrounding.

What is the correct name and HELPPP!!
What is the name and formula of an ionic compound containing the element with the
atomic number of 5 bonded to Carbonate? *
Boron Carbonide; B2(CO3)3
Boron Carbonate; B,CO,
Boron Carbide; B,CO,
Boron Carbonate; B2(CO3)3

Answers

Answer:

Boron Carbonate; B₂(CO₃)₃

Explanation:

For names, carbonide does not exist; that rules out the first option. Carbide refers to just a carbon atom, not carbon and oxygen as in the polyatomic ion carbonate. That rids us of the third option. We are left with boron carbonate with the formula BCO or boron carbonate with the formula B₂(CO₃)₃.

Recall the carbonate polyatomic ion's formula: CO₃²⁻

Thus BCO cannot be the formula.

Option 4 is your answer, Boron Carbonate; B₂(CO₃)₃.

To further check your answer, observe the oxidation states of boron and the polyatomic ion carbonate. Boron can exist in oxidation states of either 2+ or 3+, and carbonate is only 2-; in this formula, boron will exhibit a 3+ state to balance out with carbonate.

2x3+ = 6+; 3x2- = 6-

6+ + 6- = 0; balanced


3. What is the electron configuration of the following elements?
Lithium
Calcium
Copper
Strontium
Potassium
sodium

Answers

Answer: Lithium ( 3),Calcium (20),Copper (29),Strontium (38),Potassium (19),Sodium (11)

Explanation:

please someone answer and help :) ​

Answers

13. D
14. A
15. C
16. B
17. F
18. E

Match each term with the correct description below.
1. what is a charged atom that has gained one or more electrons?

2. What substance is held together by ionic bonds?

3. What metal and nonmetal transferrers electrons?

4. What particle has electrons that are shared unequally?

5. What forms when atoms share electrons by covalent bonds?

6. What two nonmetals share electrons?

7. What charge atom that has lost one or more electrons?

8. What two or metals "pooling" electrons?

a. metallic bond

b. covalent bond

c. anion

d. ionic bond

e. molecule

f. cation

g. compound

h. polar molecule

Answers

Answer:

1. anion

2. compund

3. ionic bond

4. polar molecule

5. molecule

6. covalent bond

7. cation

8. metallic bond

Explanation:

An electric current is passed through a sample of water, causing the
sample to break down into oxygen and hydrogen. Given this information,
what is the correct classification of water?

Answers

Answer:

A compound

Explanation:

The water is best classified as a compound. When a substance is broken down into elemental composition or units, they are said to be a compound.

An element is a distinct substance that cannot be split up into simpler substances. Compound are substances composed of two or more kinds of atoms  joined together in a definite grouping. The properties of compounds are distinct and different from those of the individual elements that are combined in its make - up. So, the water when broken down to elements is a compound.

A student wants to investigate competition between two organisms. For the investigation, it
is most important that the student should choose organisms that
O require the same resources.
O reproduce at the same rate.
O are both active during the day.
o have the same adaptations.

(help please!!! due today!!!)

Answers

Answer:

i think that the answer is B

Explanation:

If a student wants to investigate competition between two organisms in an ecosystem the organisms should have same adaptations and use same resources.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

Learn more about ecosystem,here:

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Select the correct answer

Giving brainliest

Answers

Answer:

I'm gonna say A and B

Explanation:

Not sure though

Hope I helped :)

Please help... awarding 20 points and brainiest if correct.

Answers

Answer:

CH4

- 4 electron

- 0 electron

- the geometry of Ch4 is tetrahedral

AlF3

- 3 electron

- 0 electron

- the geometry is trigonal planar

CCl4

- 4 electron

- 0 electron

- the geomotry is tetrahedral

SeH2

- 2 electron

- 2 electron

- the geometry is V shape

Please answer fast!!!!!!!The table shows the distance that car 2 traveled during three trials. What is the average distance traveled by car 2 without a bumper? Be sure to show your work.


Trial 1 Trial 2 Trial 3

25, 27, 29

Answers

Answer: 25 + 27 + 29 = 81

81 divided by 3 = 27

your answer is 27

Explanation: you add them all together then however many numbers there are is how you divide it

Answer:

81 and 27 i think

Explanation:

The three types of symbiosis are ___ and ___

Answers

Answer:

mutualism,commensalism and parasitism

Answer:

mutualism, commensalism, and parasitism

1375 J of heat energy are added to a 50.0 g sample of copper, which increases temperature from 22.8 C to 94.2 C. Calculate the specific heat of copper.

Answers

Answer:

0.385 J/g°C

Explanation:

Using the following formula, the specific heat of an elemental substance can be calculated:

Q = m × c × ∆T

Where;

Q = quantity of heat (J)

m = mass (g)

c = specific heat capacity (J/g°C)

∆T = change in temperature (°C)

Based on the given information, Q = 1375J, m = 50g, initial temperature = 22.8°C, final temperature = 94.2°C, c =?

Q = m × c × ∆T

1375 = 50 × c × (94.2 - 22.8°C)

1375 = 50 × c × 71.4

1375 = 3570c

c = 1375/3570

c = 0.3851

c = 0.385 J/g°C

Water is the only substance that can dissolve polar solutes. True or False?

Answers

Answer:

false!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Explanation:

I WILL GIVE BRAINLIEST TO YOU IF YOU ANSWER THIS (I KNOW THE ANSWER, SO IF YOU SOLVED WRONG, I WONT GIVE BRAINLIEST) SO YOU BETTER GIVE CORRECT ANSWER OR IM NOT GOING TO GIVE BRAINLIEST

Answers

Answer:

Corona Virus outbreak

Question 2
1 pts
Which of the following bonding types requires a TRANSFER of valence
electrons between two or more atoms?
Covalent
o lonic
Hydrogen
O Metallic

Answers

Answer:

I want to say its Lonic Bonding.

Explanation:

Ionic bonding is the complete transfer of valence electron(s) between atoms.

help it's chemistry ​

Answers

Answer:

wavelength = wave velocity/frequency.

Explanation:

c

 is a constant. It is usually given as

3.00

×

10

8

m/s or

3.00

×

10

10

cm/s rounded to three significant figures.

Wavelength is measured in meters, centimeters, nanometers, etc...).

Frequency has a unit of

1/s

which means

1

cycle per second. It is also given the unit Hertz (Hz) in honor of German physicist Heinrich Hertz who proved the existence of electromagnetic waves.

1

Hz

=

1/s

.

1. Which best represents a compound?

Answers

Answer:

D

Explanation:

The one that best represents a compound is answer "D" because you compounds are chemically bonded and are always together.

What order do they go in plz someone help

Answers

Continental crust, oceanic crust, mantle , outer core , and inner core.
Oceanic crust, continental crust, mantle, the inner and outer core. Hope this helped and I hope it’s right!

i need this ASAP i will give brainliest :)



Which term is defined as the ratio of the speed of light in a vacuum to the speed of light in the material it is passing through?

Answers

Answer:

I really dont know i just guessed :(

Explanation:

Answer:

index of refraction

Explanation:

How many grams are in a 3.1E21 atom sample of vanadium

Answers

there are 50.9415 grams in vanadium


hope that helps :)

The half-life of carbon-14 is about ____________ years.

Fill in the blank.

Answers

The half-life of carbon-14 is about 5730 years

Answer:

5730 years

Explanation: for more on radiocarbon dating.) and hence explain why the amount of carbon-14 in the sample decays by half over any period of 5730 years.

Which air is driest? Air Temp 30F Dew-point 29F, Air Temp 77F Dew-point 19F, Air Temp 66F Dew-point 60F, or Air Temp 50F Dew-point 36F

Answers

Answer:

Air Temp 77F Dew-point 19F

Explanation:

Quiz

The dew point can be described as the temperature required by the air to be cooled. The driest air will have a higher dew point, therefore, at an air temperature of 66°F and a dew point of 60°F. Therefore, option (C) is correct.

What is dew point?

The dew point can be defined as the temperature at which air should be cooled to become saturated with water vapor assuming constant air pressure and water content.

Moisture capacity will decrease below the dew point. Airborne water vapor will condense to form liquid water or dew. Dew develops on the surface and occurs through contact with a cooler surface.

The dew point is called the frost point when the temperature is below the freezing point because frost is produced by deposition rather than a condensation of water.

The humidity also impacts the dew point. The dew point increases when there is higher moisture in the atmosphere.  Therefore, the higher dew point refers to less humid air or drier.

To learn more about dew point, here:

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What is better Music,Cartoons,Games,Anime,Knowledge Or Relaxation.

Answers

Answer:

anime

Explanation:

Games are the best to play
Other Questions
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