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
LekaFEV [45]
3 years ago
11

In what ways might the Ring of Fire have changed in shape and size throughout time?

Chemistry
1 answer:
user100 [1]3 years ago
7 0

Explanation:

this question tion is so hard sorry but I can't do is sorry

You might be interested in
Examine the analogy and how it compares a part to a whole. Link : chain :: atom : _[blank]_​ what option best completes this ana
Rzqust [24]

A link is a part of a chain and an atom is a part of a molecule. It is also a part of a compound. Your answer should be molecule and/or compound

7 0
3 years ago
Read 2 more answers
How many moles of hydrogen are in 5.2 moles of c7h18
alexandr1967 [171]
The percentage of hydrogen in C7H18 is calculated as follows:
[18/(12*7+1*8)]*100=18%
The amount of hydrogen in 5.2moles is given by:(18/100)*5.2=0.94moles
6 0
3 years ago
Read 2 more answers
Question 3 (1 point)
irina1246 [14]

false

Explanation:

i took the test

4 0
3 years ago
Read 2 more answers
Coke is an impure form of carbon that is often used in the in-dustrial production of metals from their oxides. if a sample of co
olasank [31]
The reaction equation is:
<span>2CuO(s) + C(s) </span>→ <span>2Cu(s) + CO</span>₂<span>(g)

First, we determine the number of grams present in one ton of copper oxide. This is:
1 ton = 9.09 x 10</span>⁵ g

We convert this into moles by dividing by the molecular mass of copper oxide, which is:
9.09 x 10⁵ / 79.5 = 11,434 moles

Each mole of carbon reduces two moles of copper oxide, so the moles of carbon required are:
11,434 / 2 = 5,717 moles of Carbon required

The mass of carbon is then:
5,717 x 12 = 68,604 grams

The mass of coke is:
68,604 / 0.95 = 72,214 g

The mass of coke required is 7.22 x 10⁴ grams
5 0
3 years ago
Which represents the balanced nuclear equation for the beta plus decay of C-11?
slavikrds [6]
Nuclear reaction: ¹¹C → ¹¹B + e⁺(positron) + ve(electron neutrino).<span><span><span><span>
</span></span></span></span>Beta decay is radioactive decay<span> in which a beta ray and a neutrino are emitted from an atomic nucleus.
There are two types of beta decay: beta minus and beta plus. In beta minus decay, neutron is converted to a proton and an electron and an electron antineutrino and in beta plus decay, a proton is converted to a neutron and positron and an electron neutrino, so mass number does not change.</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • One process used to obtain freshwater from salt water is
    6·1 answer
  • Which scientist was a great influence to others when he developed the heliocentric model about how the planets orbited the Sun?
    15·1 answer
  • The process of burning means to react a substance with <br><br> is oxygen
    11·1 answer
  • In the reaction 2K + 2H2O→2KOH + H2 , which compound has an element ratio of 2:1 ?
    10·2 answers
  • Is "A finger got cut off" a inherited or acquired or both.
    11·2 answers
  • Which one??........LMK
    13·1 answer
  • What is the name of Na3N?<br> HELP PLEASEEEE !!!!
    5·1 answer
  • PLEASE PLEASE HELP!!!!
    11·1 answer
  • 40.0 L of oxygen were collected at 10°C and<br> 758 mm of Hg. Calculate its volume at STP.
    15·1 answer
  • The temperature of a sample of liquid water changes from 50°C to 30°C. Which statement best explains the change that
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!