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
Arte-miy333 [17]
2 years ago
7

HELP 100 PONTS GIVING BRAINLIEST

Chemistry
2 answers:
Oksana_A [137]2 years ago
7 0

Answer:

Hello!

Explanation:

I didn´t know if you knew, but there is no attachment. :)

DochEvi [55]2 years ago
3 0

Answer:

Didn’t give me a picture m8???

You might be interested in
An excess of mg(s) is added to 100.ml of 0.400 m hcl. at 0c and 1 atm pressure, what volume of h 2 (g) can be obtained?
ra1l [238]
The balanced equation for the reaction between Mg and HCl is as follows
Mg + 2HCl --> MgCl₂ + H₂
stoichiometry of HCl to H₂ is 2:1

number of HCl moles reacted - 0.400 mol/L x 0.100 L = 0.04 mol of HCl
since Mg is in excess HCl is the limiting reactant 
number of H₂ moles formed - 0.04/2 = 0.02 mol of H₂

we can use ideal gas law equation to find the volume of H₂
PV = nRT 
where 
P - pressure - 1 atm x 101 325 Pa/atm = 101 325 Pa
V - volume
n - number of moles - 0.02 mol
R - universal gas constant - 8.314 Jmol⁻¹K⁻¹
T - temperature in Kelvin - 0 °C + 273 = 273 K
substituting these values in the equation 

101 325 Pa x V = 0.02 mol x 8.314 Jmol⁻¹K⁻¹ x 273 K
V = 448 x 10⁻⁶ m³
V = 448 mL 
therefore answer is 
c. 448 mL 
5 0
3 years ago
Find the volume of 56.0 grams of O2
N76 [4]

Answer:

39.2 L at STP

Explanation:

Convert the grams to moles first by dividing 56.0 by the molar mass of O2 (32.0) then convert to volume by multiplying by 22.4.

= 39.2 L

5 0
3 years ago
What does the number next to ions signify?
dusya [7]
<span>The number next to the simbol of the element ions (as a superscript) means the number of charges of the ion. For example N (+),, where (+) is a superscript means that the charge of the ion is 1+. S(2-), where (2-) is a superscript, means that the charge of the ion is (2-). OH (-), where (-) is a superscript, means that the charge of OH ion is (1-) . </span>
6 0
3 years ago
How does the composition of water molecule affect its charge
kolezko [41]
It is make the molecule polar.
7 0
3 years ago
Read 2 more answers
A package of chips weighs 45 grams. How much is that in kilograms?
Slav-nsk [51]

Answer:

1000g=1kg

45g=?

45/1000

0.045kilograms

5 0
3 years ago
Other questions:
  • The flask contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.160 M NaOH. It requires 18.
    11·1 answer
  • Give the name of the following molecule
    13·2 answers
  • Which of the following apply to gases. Select all that apply.
    10·1 answer
  • Name four products of incomplete combustion<br><br> Which 4?<br><br> 1.<br> 2.<br> 3.<br> 4.
    7·1 answer
  • Identify each section of the periodic table.<br><br> metals<br> nonmetals<br> metalloids
    6·2 answers
  • If molecules move from one place to another inside of a cell, which type of communication is this?
    14·1 answer
  • Lividity in a dead body is caused by capillaries decaying due to de-oxygenation.
    7·2 answers
  • Which changes when gases condense to form liquids
    12·1 answer
  • The average monthly temperatures for January, April, July, and October in Baltimore, Maryland are graphed below. These averages
    10·1 answer
  • What protects the cells of plants
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!