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
Zolol [24]
2 years ago
11

What element does “X” represent in Figure 1?

Chemistry
1 answer:
vredina [299]2 years ago
6 0

Answer:

Argon

Explanation:

It's atomic number is 18

hope that's it

You might be interested in
Which statement accurately compares the trends in atomic number and atomic mass in the periodic table
Tresset [83]

Answer: is C

Explanation:

Both the atomic mass and the atomic number increase from left to right

6 0
3 years ago
Read 2 more answers
How does sand cause weathering?
Ivahew [28]
Sand doesn't directly cause weathering because sand is made via weathering. When rocks get weathered they become sand. But maybe when the sand and wind work together they might be able to weather some rocks
6 0
3 years ago
Read 2 more answers
What is the ph of a solution that is .75 m in sodium acetate and .50 m in acetic acid? (ka for acetic acid is 1.8*10^-5?
inna [77]

Answer:

4.921.

Explanation:

  • It is an acidic buffer solution;

∵ pH = pKa + log[salt]/[acid].

<em>∴ pH </em>= - log(1,8 x 10⁻⁵) + log[0.75/0.50] = 4.745 + 0.1761 = <em>4.921.</em>

8 0
3 years ago
What is the pressure of 5.0 mol nitrogen gas in a 2.0 L container at 286 K
g100num [7]
The "Ideal Gas Law Equations" is 
PV=nRT
P= Pressure (in Pascals)
V=Volume (in Liters)
n=amount, or <u>n</u>umber (in moles)
R= 8.3145 \frac{Pascals*Liters}{Moles*Kelvin} or \frac{PaL}{molK}
T= Temperature (In Kelvin)

P= \frac{nRT}{V}

Plug into the equation and you're good!
P=\frac{nRT}{V}
P =\frac{(5mol)(8.3145)(286K)}{2L}
P=5944.8675Pa

If your teacher cares about sig figs,
2 sig figs (significant figures)
P=5900Pa

For other units of pressure,
1 atm = 760 mmHG = 760 Torr = 101326 Pa = 1.01325 bar<u />
5 0
3 years ago
DDT was banned in The United States because it what?
Nat2105 [25]
Because it is toxic to humans if absorbed or consumed.
4 0
3 years ago
Other questions:
  • In a simplified model of a hydrogen atom, the electron moves around the proton nucleus in a circular orbit of radius 0.53 × x10−
    10·1 answer
  • The process of isotopes breaking down and emitting particles, such as alpha or beta, to form a new substance.
    14·2 answers
  • What is the energy of a photon with wavelength of 670.8?
    15·1 answer
  • A sample of gas has a mass of 827 mg . Its volume is 0.270 L at a temperature of 88 ∘ C and a pressure of 975 mmHg . Find its mo
    11·1 answer
  • Complete these equations for the ionization of an Arrhenius acid or base in water. Include the states of the products.
    15·1 answer
  • Calcium reacts with hydrochloric acid,HCI, to make calcium chloride and hydrogen gas (H2).
    15·1 answer
  • A sample of a compound containing only carbon and hydrogen was burned to produce 1.36g of water and 5.22g of carbon dioxide. Cal
    15·1 answer
  • Do equal volumes of the same gas at the same temperature and pressure contain equal numbers of molecules (number of moles)?
    7·1 answer
  • A molecule is made up of more than one element ?
    12·1 answer
  • Determine the mass of 10g of CaCO3​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!