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
Alexus [3.1K]
2 years ago
9

Which has a larger electronegativity? Ge or Pb Ge or Fe Zn or Se

Chemistry
1 answer:
Usimov [2.4K]2 years ago
3 0
1. Ge
2. Fe
3. Zn
Remember, electronegativity decreases down a group (vertically) and increases across a period (horizontally) on the periodic table. :)
You might be interested in
If a tree dies and the trunk remains undisturbed for 13,750 years, what percentage of the original 14c is still present? (the ha
defon

Answer:

18.94%.

Explanation:

  • The decay of carbon-14 is a first order reaction.
  • The rate constant of the reaction (k) in a first order reaction = ln (2)/half-life = 0.693/(5730 year) = 1.21 x 10⁻⁴ year⁻¹.
  • The integration law of a first order reaction is:

<em>kt = ln [A₀]/[A]</em>

k is the rate constant = 1.21 x 10⁻⁴ year⁻¹.

t is the time = 13,750 years.

[A₀] is the initial percentage of carbon-14 = 100.0 %.

[A] is the remaining percentage of carbon-14 = ??? %.

∵ kt = ln [Ao]/[A]

∴ (1.21 x 10⁻⁴ year⁻¹)(13,750 years) = ln (100.0%)/[A]

1.664 =  ln (100.0%)/[A]

Taking exponential for both sides:

5.279 = (100.0%)/[A]

<em>∴ [A]</em> = (100.0%)/5.279 = <em>18.94%.</em>

8 0
2 years ago
PLEASE HELP ME ON THIS ​
lisabon 2012 [21]

Answer:

The conductance will increase as the concentration of the electrolyte is increased.  

Explanation:

The ions are what carry the charges from one electrode to another.  The more there are, the easier it is for electrons to get across the solution of electrolyte,

3 0
2 years ago
How much heat does your body lose when 6.35 g of sweat evaporates from your skin at 25 ∘C ? (Assume that the sweat is only water
ziro4ka [17]

Answer:

15.52 kj

Explanation:

H2 O   mole wt ~ 18 gm

6.35 gm   is    6.35 gm /18 gm/mole  = .353 moles of H2O

.353 moles * 44 kj/mole =

5 0
2 years ago
Attempt 3 An irregular lump of an unknown metal has a measured density of 5.50 g/mL. The metal is heated to a temperature of 153
shepuryov [24]

Answer:

i think it's 20.0mL

Explanation:

i learned this question in class

4 0
3 years ago
How many half lives would pass if a mass of copper-66 decayed for 51 minutes? The half life of Cu-66 is 5.10 minutes.
Sveta_85 [38]
Divide 51 by 5.1, it's 10 half lives
4 0
3 years ago
Other questions:
  • What instrument is used to collect humidity data?
    5·1 answer
  • An uncharged atom of mercury has an atomic number of 80 and an atomic mass of 200. This atom has ________ protons, ________ neut
    9·1 answer
  • 14 billion years (roughly the age of the universe) to seconds. (Assume there are 365 days in a year.)
    12·1 answer
  • Volume is the quantity of two-dimensional space occupied by a liquid, solid, or gas.
    5·2 answers
  • Carbon monoxide gas reacts with hydrogen gas to form methanol via the following reaction: CO(g)+2H2(g)→CH3OH(g)CO(g)+2H2(g)→CH3O
    10·1 answer
  • Following a volcanic eruption which event is usualy the last one to be observed
    13·2 answers
  • For each system listed in the first column of the table below, decide (if possible) whether the change described in the second c
    9·1 answer
  • A word used to describe if one substance can be dissolved in another
    12·1 answer
  • Q1 - How would you balance the following equation: N₂ + O₂ N₂O₅
    11·1 answer
  • the countercurrent arrangement of the two limbs of the loop of henle becomes a multiplier of electrolyte concentration due to wh
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!