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
kow [346]
3 years ago
14

Missing words please help me

Chemistry
2 answers:
Elina [12.6K]3 years ago
8 0

The first one is 206 then move, body, then protects, calcium,strong,blobs

kolezko [41]3 years ago
7 0
There are
206
bones in the human skeleton. Our bones are very
strong
the skeleton does three very important jobs. It helps us to
move
around, it supports the
body
and it
protects
the organs inside the body. Bones are made from
calcium
and they are very hard. They are
alive
and grow with us. Witought our skeletons, we would look like
blobs



You might be interested in
Calculate the cell potential at 25oC under the following nonstandard conditions: 2MnO4-(aq) + 3Cu(s) + 8H+(aq) ⟶ 2MnO2(s) + 3Cu2
baherus [9]

Answer:

1.346 v

Explanation:

1) Fist of all we need to calculate the standard cell potential, one should look up the reduction potentials for the species envolved:

(oxidation) Cu_{(s)} →Cu^{2+}_{(aq)} +2e E°=0.337 v

(reduction) MnO_{4 (aq)} + 3e + 4H^{+}_{(aq)}→MnO_{2 (aq)}+2H_{2}O E°=1.679 v

(overall) 2MnO_{4 (aq)}+3Cu_{(s)}+8H^{+}_{(aq)}→3Cu^{2+}_{(aq)}+2MnO_{2 (aq)}+4H_{2}O E°=1.342 v

2) Nernst Equation

Knowing the standard potential, one calculates the nonstandard potential using the Nernst Equation:

E=E^{0} -\frac{RT}{nF}Ln\frac{[red]}{[ox]}

Where 'R' is the molar gas constant, 'T' is the kelvin temperature, 'n' is the number of electrons involved in the reaction and 'F' is the faraday constant.

The problem gives the [red]=0.66M and [ox]=1.69M, just apply to the Nernst Equation to give

E=1.342 -\frac{298.15*8.314}{6*96500}Ln\frac{[.66]}{[1.69]}=1.346

E=1.346

5 0
3 years ago
HELP ASAP!! FILL IN THE BLANKS! will be brainliest!!!
Ludmilka [50]

Answer:

Don't mark me brainliest because of this but I'm pretty sure your supposed to give us the words because teachers don't give you things like that without the words you will the answer in with.

4 0
3 years ago
Read 2 more answers
2 characteristics and 2 differences for spiral and elliptical galaxies
Lerok [7]
Spiral galaxies have three main components: a bulge, disk, and halo (see right). The bulge is a spherical structure found in the center of the galaxy. This feature mostly contains older stars. The disk is made up of dust, gas, and younger stars. The disk forms arm structures. Our Sun is located in an arm of our galaxy, the Milky Way. The halo of a galaxy is a loose, spherical structure located around the bulge and some of the disk. The halo contains old clusters of stars, known as globular clusters<span>.
</span><span>
Elliptical galaxies are shaped like a spheriod, or elongated sphere. In the sky, where we can only see two of their three dimensions, these galaxies look like elliptical, or oval, shaped disks. The light is smooth, with the surface brightness decreasing as you go farther out from the center. Elliptical galaxies are given a classification that corresponds to their elongation from a perfect circle, otherwise known as their ellipticity. The larger the number, the more elliptical the galaxy is. So, for example a galaxy of classification of E0 appears to be perfectly circular, while a classification of E7 is very flattened. The elliptical scale varies from E0 to E7. Elliptical galaxies have no particular axis of rotation.

</span>
5 0
3 years ago
Read 2 more answers
Dicotyledonous plants<br>​
dlinn [17]

The dicotyledons, also known as dicots, are one of the two groups into which all the flowering plants or angiosperms were formerly divided. The name refers to one of the typical characteristics of the group, namely that the seed has two embryonic leaves or cotyledons.

8 0
2 years ago
The combustion of Ibuprofen C13H18O2 produces water and carbon
prohojiy [21]

Answer:

277.7 g of CO2

Explanation:

Equation of reaction

C13H18O2 + 11O2 ---> 13CO2 + 9H2O

From the equation of reaction

1 mole of ibuprofen produces 13 moles of CO2

Molar mass of ibuprofen is 206g

Molar mass of CO2 is 44g

13 moles of CO2 weighs 572g

Therefore, 100g of ibuprofen will produce (100×572)/206 of CO2

= 277.7g

6 0
3 years ago
Other questions:
  • Simple question. How many groups and how many periods are on the periodic table? Which directions do they go?
    5·2 answers
  • In a solution, the solvent is...
    5·2 answers
  • Which of the following describes a heterogeneous mixture?
    5·1 answer
  • Any solid that forms in a liquid during a chemical reaction is called a
    7·2 answers
  • How to turn form moles to grams​
    15·2 answers
  • Which two factors affect the amount of thermal energy an object has?
    15·1 answer
  • Bromine- is radioactive and has a half life of seconds. What percentage of a sample would be left after seconds? Round your answ
    14·1 answer
  • HIII , match these up for brainliest
    8·2 answers
  • Name ways we use technology in inner and outer space<br> 8th grade science btw
    9·1 answer
  • Calculate the percent composition by mass of each element in Al(OH)3. Use at least three significant figures.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!