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
kirill [66]
3 years ago
14

Pls help! its 20pts! brainliest, rattings, thanks, etc...

Chemistry
2 answers:
s344n2d4d5 [400]3 years ago
6 0

4: A - CO2

5: D- Magnesium chloride

6: A- Electrons are shared in a covalent bond

7: C- 12

I hope this helped :)

Brainliest?

Misha Larkins [42]3 years ago
5 0

Question 4: The first one

Question 5: The fourth one

Question 6: The first one

Question 7: The third one

You might be interested in
The melting point of table salt is 801 degrees celsius. is this a physical or chemical property?
Valentin [98]
It is a Physical property because like water it changes into a ice cube but it can be melted into water or be turned back into an ice cube.
5 0
3 years ago
Can anyone please help me with my chemistry homework? It’s about molarity. I can’t message anyone here because I’m new to brainl
GREYUIT [131]

Answer:

ok sure

Explanation:

4 0
3 years ago
Write the balanced chemical equation between H2SO4H2SO4 and KOHKOH in aqueous solution. This is called a neutralization reaction
const2013 [10]

Answer:

0.185M sulfuric acid

Explanation:

Based on the reaction:

H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O

<em>1 mole of sulfuric acid reacts with 2 moles of KOH</em>

Initial moles of H₂SO₄ and KOH are:

H₂SO₄: 0.750L ₓ (0.470mol / L) = <em>0.3525 moles of H₂SO₄</em>

KOH: 0.700L ₓ (0.240mol / L) = <em>0.168 moles of KOH</em>

The moles of sulfuric acis that react with KOH are:

0.168mol KOH ₓ (1 mole H₂SO₄ / 2 moles KOH) = 0.0840 moles of sulfuric acid.

Thus, moles that remain are:

0.3525moles - 0.0840 moles = <em>0.2685 moles of sulfuric acid remains</em>

As total volume is 0.700L + 0.750L = 1.450L, concentration is:

0.2685mol / 1.450L = <em>0.185M sulfuric acid</em>

8 0
3 years ago
How many moles of N2 are need to fill a 35 L tank at standard temperature and pressure?
Tems11 [23]

1.56 moles of N2 are needed to fill a 35 L tank at standard temperature and pressure. Details about moles can be found below.

<h3>How to calculate number of moles?</h3>

The number of moles of a substance can be calculated using the following formula:

PV = nRT

Where;

  • P = pressure
  • V = volume
  • n = number of moles
  • R = gas law constant
  • T = temperature

At STP;

  • T = 273K
  • P = 1 atm
  • R = 0.0821 Latm/molK

1 × 35 = n × 0.0821 × 273

35 = 22.41n

n = 35/22.41

n = 1.56mol

Therefore, 1.56 moles of N2 are needed to fill a 35 L tank at standard temperature and pressure.

Learn more about number of moles at: brainly.com/question/14919968

#SPJ1

4 0
2 years ago
One of the method used for the manufacturing of steel is the
Norma-Jean [14]
The answer is B. Centrifugation
7 0
3 years ago
Other questions:
  • Juan inflates a balloon and then releases its end to let the balloon go free as air comes out. The balloon then flies around the
    9·2 answers
  • You and your friend live in different states and plant identical hydrangea bulbs in your garden. When they bloom, you send each
    13·2 answers
  • What is the correct way to show sodium chloride in aqueous solution? A.NaCl (s) B.NaCl (w) C.NaCl (as) D.NaCl (aq)
    9·2 answers
  • The specific heat of a certain type of cooking oil is 1.75 J/(g⋅°C). How much heat energy is needed to raise the temperature of
    11·1 answer
  • An FM radio station has a wavelength of 2.813 m . Convert this length to feet.
    5·2 answers
  • What is the chemical symbol for dynamite?
    15·2 answers
  • 1.
    5·1 answer
  • Describe how naturally<br> acidic rainwater can affect a<br> mountain of limestone.
    13·1 answer
  • PLEASE HELP AND SHOW WORK ASAP!
    14·1 answer
  • Can an intermediate appear as a reactant in the first step of a reaction mechanism?.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!