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
Naddik [55]
2 years ago
15

Alex cut a pizza into 8 equal slices. He removed 2 of the slices of pizza. What is the measure of the angle made by the missing

Chemistry
1 answer:
Firlakuza [10]2 years ago
4 0

Answer: 90 degrees.

Explanation:

You might be interested in
An element crystallizes in a face-centered cubic lattice. If the length of an edge of the unit cell is 0.408 nm, and the density
V125BC [204]

Answer:

Au

Explanation:

For the density of a face-centered cubic:

Density = \dfrac{4 \times M_w}{N_A \times a^3}

where

M_w = molar mass of the compound

N_A= avogadro's constant

a^3 = the volume of a unit cell

Given that:

Density (\rho) = 19.30 g/cm³

a = 0.408 nm

a = 0.408 \times 10^{-9} \times 10^{2} \ cm

a = 4.08 \times 10^ {-8} \ cm

∴

19.3 = \dfrac{4 \times M_w}{(6.023 \tmes 10^{23})\times (4.08 \times 10^{-8})^3}

M_w= \dfrac{19.3\times (6.023 \times 10^{23})\times (4.08 \times 10^{-8})^3}{4}

M_w=197.37 \ g/mol

Thus, the molar mass of 197.37 g/mol element is Gold (Au).

4 0
3 years ago
What state of matter has a definite shape and volume.
anastassius [24]

Solids have a definite shape and volume. They are always the same shape no matter what they are contained in; their volume is also the same because they don't change unless you add or take away from it.

____________________________________________________________

Liquids have an indefinite shape but definite volume. They expand to fill out the space they are contained in, but their volume doesn't change unless you take out or add more of the liquid.

Gases have an indefinite shape and volume. Gases expand to fill out the space they are in and also don't have a clear shape because they are not always in one form.

3 0
3 years ago
Is salt a compound or mixture?
Anna11 [10]
Table salt is an ionic compound :)
 
Rate and Thanks!
5 0
3 years ago
Read 2 more answers
Which would best help will give brainlist first 1
son4ous [18]
It would definitely be hand lense
3 0
3 years ago
Read 2 more answers
How much (Q) heat is needed to melt 35 g of iodine? Hf = 61.7 J/g.
aev [14]

Taking into account the definition of calorimetry and latent heat, a heat of 2159.5 J is needed to melt 35 g of iodine.

<h3>Calorimetry</h3>

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

<h3>Latent heat</h3>

Latent heat is defined as the energy required by a quantity of substance to change state.

When this change consists of changing from a solid to a liquid phase, it is called heat of fusion and when the change occurs from a liquid to a gaseous state, it is called heat of vaporization.

The heat Q that is necessary to provide for a mass m of a certain substance to change phase is equal to

Q = m×L

where L is called the latent heat of the substance and depends on the type of phase change.

<h3>Heat needed to melt iodine</h3>

In this case, you know:

  • m= 35 g
  • L=61.7 \frac{J}{g}

Replacing in the definition of latent heat:

Q= 35 g× 61.7 \frac{J}{g}

Solving:

<u><em>Q=2159.5 J</em></u>

Finally, a heat of 2159.5 J is needed to melt 35 g of iodine.

Learn more about calorimetry:

brainly.com/question/14057615

brainly.com/question/24988785

brainly.com/question/21315372

brainly.com/question/13959344

brainly.com/question/14309811

brainly.com/question/23578297

#SPJ1

8 0
2 years ago
Other questions:
  • The student plans to conduct a spectrophotometric analysis to determine the concentration of Cu2+(aq) in a solution. The solutio
    9·1 answer
  • These elements look like steps on the periodic table. They share properties of both metals and nonmetals. Computer chips contain
    9·1 answer
  • Can someone please help me with this question? I don't understand it
    9·2 answers
  • What minimum energy is required to excite a vibration in HCl?
    7·1 answer
  • The numbers used in a balanced chemical equation to represent the number of particles of
    7·1 answer
  • What are the representative elements? Where are they located
    15·1 answer
  • The _____ rate is the number of particles that react in a given time to form products.
    7·2 answers
  • Does anyone know this???
    9·1 answer
  • What is woven into farbic?​
    12·1 answer
  • ch3)2c(oh)ch2ch3 skeletal structure, Functional groups, compound type &amp; alcohol class if it’s an alcohol
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!