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
alukav5142 [94]
3 years ago
15

1. the inner core of the is mostly of the earth is mostly made of

Chemistry
2 answers:
Sladkaya [172]3 years ago
7 0

first one is d second is a and 3rd one is A

jeka943 years ago
5 0
The first one is d and the second is b i think a nd. the last one is b too
You might be interested in
Choose all the statements that are true for Relative Age Dating.
Lorico [155]

Answer:

Which one goes in the absolute dating column, relative column, and both.

Lesson 4.07: Relative and Absolute Dating DIRECTIONS: Use the facts below to complete the chart for Relative and Absolute Dating.

1. The Law of Superposition – the age of an object may be determined by the depth at which it is found, the deeper the object is in the Earth, the older it is.

2. Gives scientist an exact age of a rock fossil.

3. Scientist use their knowledge of the half-life of carbon and uranium isotopes to measure the age of the rock or fossil .

4. Used to determine the age of an object, when there is no record of a living thing.

5. Gives the approximate age of a fossil or artifact.

6. Used by scientist to determine the age of a fossil or artifact.

7. Estimates the order of geological or prehistoric events, but cannot be used to determine when these events have occurred.

8. Measures the decay of a rock or fossil to measure the age.

3 0
2 years ago
Toluene (C7H8) and nitric acid (HNO3) are used in the production of trinitrotoluene (TNT, C7H5N3O6), an explosive. C7H8 + HNO3 =
olga55 [171]
  The mass in grams  of nitric  acid that is required  to react  with 454g C7H8 is 932.72  grams

     calculation
find the  moles  of C7H8  used
moles = mass/molar mass

= 454 g/92  = 4.935  moles

balanced reacting  equation

C7H8  +3 HNO3  = C7H5N3O6  +3 H20
by  use of mole ratio between  C7H8  to  HNo3  which is  1:3  the moles of  HNO3  =4.935  x3 = 14.805  moles

mass of HNo3  =  moles  x molar mass
= 14.805  x 63  = 932.72  grams

part B

the  mass of  C7H5N3o6 = 2045.5 grams

calculate the moles of C7H8
= 829 g/92  g/mol  = 9.011  moles

by use of mole  ratio  between C7H8 to C7H5N3O6  which is  1:1  the moles of  C7H5N3O6  is also  = 9.011  moles

mass of  C7H5N3O6  is therefore  =  moles x molar mass

=9.011 x227  = 2045.5 grams
8 0
3 years ago
Which of the following occupies a volume?<br><br> solids<br> liquids<br> gases<br> all of the above
nataly862011 [7]
Solids occupy a volume
7 0
3 years ago
Read 2 more answers
Bright headlights show objects how far away
bija089 [108]

well according to what i know....headlights only let you see about 350 feet ahead...hope it helps :)

7 0
3 years ago
Read 2 more answers
Porcelain x has much smaller crystals in it than porcelain Y. suggest a reason for that
Artyom0805 [142]

Answer: 22

Explanation:

6 0
2 years ago
Other questions:
  • When nitrogen is removed from a sample of air by the process of nitrogen fixation, what happens to the total pressure of the sam
    5·1 answer
  • A student using this technique finds that when putting a hot piece of metal into a calorimeter which contains 35.070g of water,
    7·1 answer
  • Why BF3 acts as a Lewis acid???
    9·2 answers
  • Described uranium (a type of nuclear fuel)​
    10·1 answer
  • What are common chemicals used for lemons include fertilizer pesticide fungicide and herbicide chemicals that are typically util
    13·1 answer
  • Which element is probably most like carbon
    13·1 answer
  • 33.75 g of copper are reacted with 117.5 g silver nitrate. How much excess reactant would be unused or left over( in grams)?
    11·1 answer
  • Which of the following is a property that only a gas would have?
    14·1 answer
  • Please help with this question
    11·2 answers
  • 4.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!