1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Setler79 [48]
3 years ago
7

Indicate the SI base units or derived units that are appropriate for the following measurements:

Chemistry
1 answer:
Alisiya [41]3 years ago
7 0

Answer:

The units of SI: meter, kilogram, second, Kelvin

Explanation:

(a) The length of a marathon race: meter (m)

(b) The mass of an automobile : kilogram (kg)

(c) The volume of a swimming pool : cubic meter (m^3)

(d) The speed of an airplane : (m/s)

(e) The density of gold : (kg/m^3)

(f) The area of a football field : square meter (m^2)

(g) The maximum temperature at the South Pole on April 1,1913: Kelvin (K)

You might be interested in
URGENT PLEASE HELP!!
Orlov [11]

Answer:

Liters per second is 0.2 LPS

Liters per hour is 720

Explanation:

Divide the litres by the time, than multiply the time of an hour (in seconds) and than multiply the lps by time of an hour in seconds.

3 0
3 years ago
Iron pyrite, FeS2, is known as Fool's Gold because it is a shiny yellow solid which is similar in appearance to gold. Iron pyrit
kobusy [5.1K]

Answer:

Explanation:

The algebraic sum of all the oxidation numbers of all atoms in a neutral compound is zero.

In order to know the formula of the negative Sulfur ion in pyrite, we must determine its oxidation state.

Let us make the make the oxidation number of sulfur = x

Therefore, FeS₂:

                      +2 +2x = 0

                      +2 = -2x

                       x = -1

The formula of the negative ion is S⁻

4 0
3 years ago
PLEASE HELP! How many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (II) nitra
cricket20 [7]
The mass of Fe(NO3)2 you have is 245 g * 0.805 = 197.23 g 

<span>The molar mass of Fe(NO3)2 is 179.85 g/mole so you have 1.0966 moles </span>

<span>From the balanced equation, that is the number of moles of Fe you make since both Fe(NO3)2 and Fe have a 3 in front of them. </span>

<span>The mass of Fe is 1.0966 moles * 55.85 g/mole (atomic mass of iron) = 61.246 g. From the information you are given, your answer should be in 3 sig figs so 61.2 g </span>

<span>Moles of HCl = 8.2 L * 3.5 mole/L = 28.7 moles </span>

<span>From the balanced equation, you need 1/2 the moles of zinc as you have of HCl so you need 14.35 moles. </span>

<span>To get the mass of zinc, multiply moles of zinc by its atomic mass = 938.2 g. From the information given, your answer should be in 2 sig figs so I would report it as 9.4 * 10^2 g, that clearly shows 2 sig figs.</span>
5 0
4 years ago
What statement is incorrect about this oxidation-reduction reaction? 2 SO2(g) + O2(g) → 2 SO3(g) What statement is incorrect abo
Leno4ka [110]

Answer:

The incorrect statement is: SO₂ gains electrons                      

Explanation:

A chemical reaction that involves the simultaneous transfer of electrons between two chemical species, is known as the redox reaction.

Given chemical reaction: 2SO₂(g) + O₂(g) → 2SO₃(g)

In this redox reaction, S is present in +4 oxidation state in SO₂ and +6 oxidation state SO₃. Whereas, O is present in 0 oxidation state in O₂ and -2 oxidation state in SO₃.

<u>Therefore, SO₂ loses electrons and thus gets oxidized. Whereas, O₂ gains electrons and thus gets reduced. </u>

<u>In this reaction, SO₂ is the reducing agent and O₂ is the oxidizing agent.</u>

6 0
3 years ago
Given the atomic weights of carbon, 12.01; hydrogen, 1.01; and oxygen, 16.0, what is the molar mass of glucose (CÃHÌ¿OÃ)?
Dimas [21]
Your chemical formula of glucose is messed up. It is C6 H12 O6. 
So, to get it, you simply multiply the number of atoms of C H and O by their atomic weights each and add all of them together to get the molar mass of glucose.

3 0
3 years ago
Other questions:
  • The next 11 questions are related to the titration of 40.00 mL of a 0.0900 M acetic acid solution with 0.0700 M KOH. Assume that
    7·1 answer
  • A liquid has a<br> volume and a<br> sha<br> shape.<br> fixed<br> variable
    14·2 answers
  • Which of the following will occur soon after a population of prey increases slightly in size?
    9·1 answer
  • How does temperatures affect the density of ocean water?
    7·2 answers
  • The map shows the distribution of three species of organisms observed during a population survey. Identify the pattern of distri
    8·2 answers
  • Electrochemistry - Equilibrium
    8·1 answer
  • Complete and balance the molecular equation for the reaction of aqueous iron(III) nitrate, Fe ( NO 3 ) 3 , and aqueous lithium h
    8·1 answer
  • _______ reach the surface first during an earthquake.
    13·1 answer
  • Someone please help me with the two I got wrong
    10·2 answers
  • Coffee shops sell paper coffee<br> cups with cardboard sleeves<br> for customer safety. Why?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!