Chemistry College

pls help I I alot of HELP​

Pls Help I I Alot Of HELP

Answers

Answer 1

Answer:

They need more oxhygen to fraction to incresse

Explanation:

Related Questions

In a chemical reaction, [_____] are the substances present after the reaction.

Answers

Answer:

Products

Explanation:

PLEASE HELP
This picture represents a model of:



Question 5 options:

Oxygen


Calcium


Boron


Neon

Answers

Answer:

The picture represents oxygen.

Explanation:

There are two notable ways you can figure this out:

1) Since there are eight protons, you can automatically know that you are looking for an element with an atomic number of 8. This is because the atomic number is the number of protons in an atom.

2) You can also note the number of electrons on the outer shell. These are called valence electrons. You can then see that the element has 6 valence electrons. Beginning with Lithium on the periodic table and count by ones going from left to right in period 2 of the periodic table until you get to 6. What element is that? It is indeed oxygen.

Answer:

Oxygen

Explanation:

Neons contain 8 protons and 10 ELECTRONS

Boron contains 5 protons an 5 electrons

calcium contains 20 electrons an 0 protons

Using the van der waals equation, the pressure in a 22.4 L vessel containing 1.50 mol of chlorine gas at 0.00 c is____________atm. (a= 6.49L^2-atm/mol^2, b=0.0562 L/mol)
A. 1.50
b. 0.676
c. 0.993
d. 1.48
e. 1.91

Answers

Answer:

D. 1.48atm

Explanation:

Van der waals equation is given as:

(P +an²/v²) (v - nb) = nRT

Where;

P = pressure (atm)

V = volume (L)

R = gas constant (0.0821 Latm/molK)

a and b = gas constant specific to each gas

T = temperature (K)

n = number of moles

According to the given information; V = 22.4L, T = 0.00°C (273.15K), R = 0.0821 Latm/molK, a = 6.49L^2-atm/mol^2, b = 0.0562 L/mol, n = 1.5mol

Hence;

(P + 6.49 × 1.5²/22.4²) (22.4 - 1.5×0.0562) = 1.5 × 0.0821 × 273.15

(P + 6.49 × 2.25/501.76) (22.4 - 0.0843) = 33.638

(P + 0.0291) (22.316) = 33.638

22.316P + 0.649 = 33.638

22.316P = 33.638 - 0.649

22.316P = 32.989

P = 32.989/22.316

P = 1.478

P = 1.48atm

Need help on 17,19,20 please.

Answers

Answer:

c, maybe d, and I think b.

Explanation:

Im sorry if wrong

An object on top of a building has a GPE of 23,048j and a mass of 39kg, What is the height of the object

Answers

Answer:

59.1 m

Explanation:

The height of the object can be found by using the formula

[tex]h = \frac{p}{mg } \\ [/tex]

where

p is the potential energy

m is the mass

h is the height

g is the acceleration due to gravity which is 10 m/s²

From the question we have

[tex]h = \frac{23048}{39 \times 10} = \frac{23048}{390} \\ = 59.0974...[/tex]

We have the final answer as

59.1 m

Hope this helps you

When discussing distances between the solar system, which term do we use
A. Actual distance
B. Relative Brightness
D. Realtive distance

If its right you get brainless
I'm in 5th grade

Answers

Actual distance it simple because Ik built differently obviously so like duhhhhhhhhh

In a climatological sense, dryness is a function of both annual rainfall and ________.
This a geology question.

Answers

Answer:

In a climatological sense, dryness is a function of both annual rainfall and evaporation

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