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
aalyn [17]
3 years ago
11

Someone help1!1!1!1!!!!!

Chemistry
1 answer:
alisha [4.7K]3 years ago
7 0
The question is cut off in the picture
You might be interested in
What are some of the main features found on the Sun’s surface. Describe these features in detail.
vodomira [7]
Sun spots- dark circles on the sun’s surface that I believe are areas of cooler temperatures.
Solar flares- arcs of fire that leap from the sun’s surface. Nothing special, they’re a daily roumaine for the sun
7 0
3 years ago
Please help with this, i don't really get how to do this
LuckyWell [14K]
#4 and #5:
To find pH given concentration of H+ or H30+
pH = - log (H+ or H30+ M)

To find pH given concentration of OH-
Since you already found the pH for this (in #4), you subtract #4's answer from 14.
14 - (pH) = pOH
8 0
3 years ago
2. A block of aluminum with a mass of 140g is cooled from 98.4oC to 62.2oC with a release of 1137J of heat. From these data, cal
NeTakaya
Q =  M * C *ΔT

Q / <span>ΔT  = M

</span>Δf - Δi =  98.4ºC - 62.2ºC = 36.2ºC
<span>
C = 1137 J / 140 * 36.2

C = 1137 / 5068

C = 0.224 J/gºC</span>
8 0
3 years ago
For each molecule, specify the polarity of the bonds and the overall polarity of the molecule.
olasank [31]
Each Be–Cl bond is polar because the two atoms have different electronegativities. The number of outer atoms (2) and lone pairs on the central atom (0) indicate that this molecule has a linear geometry. The bonds in a linear molecule are symmetric, and so their dipoles cancel out.

Each O–H bond is polar because the two atoms have different electronegativities. The number of outer atoms (2) and lone pairs on the central atom (2) indicate that this molecule has a bent geometry. The bonds in a bent molecule are asymmetric, and so their dipoles do not cancel out. In addition, the asymmetric arrangement of the lone pairs on O further contribute to the dipole of this molecule.

An O–O or O=O bond is nonpolar because the two atoms have the same electronegativity. Because there is no overall polarity in O2, the molecule is nonpolar.
5 0
3 years ago
"how many molecules of carbon dioxide exit your lungs when you exhale 5.00 × 10−2 mol of carbon dioxide, co2?"
IrinaVladis [17]
We are going to use Avogadro's constant to calculate how many molecules of

carbons dioxide exist in lungs:

when 1 mole of CO2 has 6.02 x 10^23 molecules, so how many molecules in

CO2 when the number of moles is 5 x 10^-2

number of molecules = moles of CO2 * Avogadro's number

                                     = 5 x 10^-2  * 6.02 x 10^23

                                     = 3 x 10^22 molecules 

∴ There are 3 x 10^22 molecules in CO2 exist in lungs 
5 0
3 years ago
Read 2 more answers
Other questions:
  • How a strontium salt emits colored light​
    9·1 answer
  • Evidence of a chemical change would be a ___________________. Question options: spinning top. rusting car fender. spilled bucket
    15·1 answer
  • If you have one mole of alumibum atoms, what would the mass be
    9·1 answer
  • (a) 4.12 x 10^15 atoms U
    6·1 answer
  • A women steps in front of a child to keep him from running off which term best describes this example
    6·1 answer
  • Water droplets forming on a window on a cool day is an example of evaporation
    12·2 answers
  • Help please really need help
    6·1 answer
  • If atoms contain charged particles, why do they not have a charge?
    10·1 answer
  • 1) Compounds Y and Z both have the formula C9H18.
    8·1 answer
  • B) Wax is a solid at room temperature. Air is a gas. Air's density is 1.30kg/m³
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!