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
kaheart [24]
3 years ago
13

What tool does the US government use to keep track of inflation throughout the years?

Chemistry
2 answers:
Alchen [17]3 years ago
3 0
The answer is d the inflation scale
QveST [7]3 years ago
3 0
B. The Consumer Price Index
You might be interested in
Which beach will be most affected by wind erosion? Why ?
laila [671]

Answer: A

Explanation: There is a lot of sand that will blow and form dunes unlike option b

8 0
2 years ago
The molarity of a 4.200 L solution is 1.230 M Na2CO3. What is the mass of Na2CO3
Lerok [7]

Answer:

547.5g

Explanation:

To get the mass, you need moles.

moles = (molarity)(Liters)

moles = (1.230M)(4.200L) = 5.166 moles Na2CO3

Now, just use stoichiometry

molar mass of Na2CO3 = 2(mass of Na) + (mass of C) + 3(mass of O)

= 2(22.9) + 12.01 + 3(16) = 105.99g/mol

5.166moles(105.99g/mol)

= 547.544

But, the measurements given had 4 significant figures, so in chemistry we write:

547.5g

7 0
3 years ago
Aluminum metal and manganese (IV) oxide react to produce aluminum oxide and manganese metal. What mass of manganese (IV) oxide r
gayaneshka [121]

Answer: 1.77 kg of manganese (IV) oxide reacts to produce 1.12kg of manganese metal.

Explanation:

The balanced chemical equation is:

4Al+3MnO_2\rightarrow 2Al_2O_3+3Mn

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

moles of manganese = \frac{1.12\times 1000g}{55g/mol}=20.4mol

According to stoichiometry :

3 moles of Mn is produced by = 3 moles of MnO_2

Thus 20.4 moles of Mn is produced by =\frac{3}{3}\times 20.4=20.4moles  of MnO_2

Mass of MnO_2=moles\times {\text {Molar mass}}=20.4moles\times 86.9g/mol=1773g=1.773kg    (1kg=1000g)

Thus 1.77 kg of manganese (IV) oxide reacts to produce 1.12kg of manganese metal.

6 0
3 years ago
1) A 3dm vessel can withstand a maximum internal pressure of 35 atmosphere, what is the highest temperature it can be heated to,
matrenka [14]

Answer:

hbffbb bbfgh vgdggjudty

4 0
2 years ago
What is 20 times 200000000
iren [92.7K]

Answer: 4000000000

because 20X200000000=4000000000

4 0
2 years ago
Other questions:
  • What is the name for the point at which the indicator changes color in a titration?
    11·1 answer
  • Which factor distinguishes a metallic bond from an ionic?
    12·1 answer
  • A hypothetical element has two main isotopes with mass numbers of 62 and 65. If 66.00% of the isotopes have a mass number of 62
    15·1 answer
  • What is the mass in grams of 13.2 amu?
    15·1 answer
  • If the wavelength of light will cause electrons to be removed from the metal (creating the photoelectric effect). What is the ef
    10·1 answer
  • Do you have any ideas for a sodium poster project other than a salt shaker?
    7·1 answer
  • Water temperature is a factor that can affect hypoxic
    14·1 answer
  • Write the formula of the conjugate acid of HCO₂⁻.
    8·1 answer
  • How does the curing basically take place?
    13·1 answer
  • Write the cell notation for the voltaic cell that incorporates each of the following redox reactions:(b) Cu²⁺(aq) + SO₂(g) + 2H₂
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!