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
jeka57 [31]
3 years ago
11

Which two columns have identical data? What do these two columns suggest about the identity of elements?

Chemistry
1 answer:
Gnesinka [82]3 years ago
3 0

Answer:

Explanation:

Atomic number and number of protons have identical data. These two columns suggest that the atomic number is the same as the number of protons in an atom.

You might be interested in
What is moment and its calculations ​
PIT_PIT [208]

Answer:

Moment=Force x Pivot

Explanation:

A moment is the turning effect of a force. Moments act about a point in a clockwise or anticlockwise direction.

Law of moments:

When an object is balanced (in equilibrium) the sum of the clockwise moments is equal to the sum of the anticlockwise moments.

How to calculate moments:

Moment=Force x Pivot

3 0
3 years ago
If the original solution contained 0.12 mol hcl, what amount of hcl, in moles, will remain when the reaction is complete? 1.4 g
horsena [70]
First, we have to know the reaction between HCl and Zn. This is a single replacement reaction as shown below:

2 HCl + Zn → ZnCl₂ + 2  H⁺

The molar mass for zinc is 65.38 g/mol. Convert mass to moles and compute for moles of HCl needed to completely react.

Mole of Zn = 1.4 g * 1 mol/65.38 g = 0.0214 moles Zn
Moles of HCl reacted =  0.0214 mol Zn * ( 2 mol HCl/1 mol Zn) = 0.0428 mol
Moles HCl remaining = 0.12 - 0.0428 = 0/077 moles HCl
8 0
3 years ago
Read 2 more answers
An oil company located a area of oil sands and began an analysis of two possible extraction methods. The oil is heavy oil, makin
Rus_ich [418]
The cost for CHOPS is in the sand and the extraction of the oil from sand.
The cost for SAGD is the generation of steam.
The benefit for CHOPS is the low cost.
The benefit for SAGD is high extraction efficiency.
The other factors that could affect the decision are fuel cost and the required purity of the oil.
7 0
3 years ago
Which TWO substances are among the six most abundant elements in living things.
Stels [109]

Answer:

B) nitrogen

Explanation:

bc i searched it up

7 0
3 years ago
Read 2 more answers
a length of #8 copper wire (radius = 1.63 mm) has a mass of 24.0 Kg and a resistance of 2.061 Ohm per Km. What is the over all r
lubasha [3.4K]
V = m / ρ 
<span>V = (23,200/8.96) × 1000 </span>
<span>V = 2,589,285.71 mm³ </span>

<span>Now we have volume and given the radius we can solve for its length. </span>
<span>L = V/πr² </span>
<span>L = (2,589,285.71/(π×1.63²))/1×10^6 </span>
<span>L = 0.31 km </span>

<span>So </span>
<span>R = rL </span>
<span>R = 2.061(0.31) </span>
<span>R = .6389 Ω </span>

<span>End.</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following describes a covalent bond?
    5·2 answers
  • Draw a chair conformation for cis-1-bromo-2,4-dimethylcyclohexane showing equatorial and axial positions at the carbon atoms bea
    9·1 answer
  • A substance whose water solution does not conduct an electric current is called an
    6·1 answer
  • Why is hydronium ion not an electrophile
    12·1 answer
  • What are the chemical properties of Carbon?
    13·1 answer
  • A gas in a balloon at constant pressure has a volume of 185 mL at -125*C. What is its volume at 31.0*C? Show all work including
    10·1 answer
  • Which energy changes are associated with a liquid freezing? Energy is released as potential energy increases. Energy is absorbed
    11·1 answer
  • Everything in the universe that we can detect is either matter or ___________.
    7·1 answer
  • Which environment is characterized by high temperature and low humidity
    5·2 answers
  • when (z)-3-methylhex-3-ene undergoes hydroboration-oxidation, two isomeric products are formed. draw one of the products. draw t
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!