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
aniked [119]
3 years ago
8

Please help I will mark brainliest

Chemistry
1 answer:
Lubov Fominskaja [6]3 years ago
8 0

Explanation:

light blue is the answer second one

You might be interested in
A longer growing season is a result of
vredina [299]

Answer: <u><em>Hope this helps</em></u>

<u><em /></u>

<h3>Explanation:</h3><h3> <u><em>The growing and flowering seasons of plants will start earlier as a result of an earlier spring caused by warmer conditions. The growing and flowering season will most likely also last longer, resulting in increased plant growth.</em></u></h3><h3><u><em /></u></h3>
5 0
4 years ago
Read 2 more answers
what is the percent by mass of a solution that contains 30 grams of potassium nitrite in 0.5 kilograms of water?
Makovka662 [10]

Answer:

5.66 %.

Explanation:

<em>mass percent is the ratio of the mass of the solute to the mass of the solution multiplied by 100.</em>

<em />

<em>mass % = (mass of solute/mass of solution) x 100.</em>

<em></em>

mass of potassium nitrite = 30.0 g,

mass of the solution = mass of water + mass of potassium nitrite = 500.0 g + 30.0 g = 530.0 g.

<em>∴ mass % = (mass of solute/mass of solution) x 100</em> = (30.0 g/530.0 g) x 100 = <em>5.66 %.</em>

5 0
3 years ago
Determine the moles of solute in a 350g solution that is 2.5 molal.
mariarad [96]

Answer:

0.875 moles solute

Explanation:

You can find the moles of the solute using the molality ratio:

Molality = moles solute / mass (kg) solution

After converting the mass to kilograms, you can plug the values into the ratio and simplify to find the moles.

1,000 g = 1 kg

  350 g              1 kg
--------------  x  ---------------  =  0.35 kg solution
                        1,000 g

Molality = moles solute / mass solution

2.5 m = moles solute / 0.35 kg

0.875 = moles solute

6 0
2 years ago
Which of the following is a primary cause of LO/TO accidents?
Marianna [84]
<h2>Answer:</h2>

The correct answer is

A) Regular operation

<h2>Explanation:</h2>

Even those workplaces that have established LO/TO processes face challenges, including: Lack of specific procedures written for each piece of equipment identifying all energy sources and energy isolation devices. Lack of comprehensive safety training for everyone in the workplace. Incorrect tag use.

So, regular operation is the primary cause of LO/TO accidents.

3 0
3 years ago
Read 2 more answers
1. Copper (__) is an element on the periodic table.
user100 [1]

Answer:  Cu

Explanation: It is Cu because the origin of the word Copper comes from the latin word "Cuprum".

3 0
4 years ago
Other questions:
  • A material that is dissolved in another material
    6·1 answer
  • Which event triggered the onset of the Great Depression of the 1930s?
    8·2 answers
  • Can you add more points to question pls
    7·1 answer
  • Most of the volume of an atom is occupied by the ?
    7·1 answer
  • Iron is ___<br> A, FE<br> B,CU<br> C,K<br> D, CA
    7·2 answers
  • The Ka of a certain indicator is 4 ×10−7. The color of HIn is green and that of In− is red. A few drops of the indicator are add
    8·1 answer
  • Where is the only place the weak necular force can be seen
    7·2 answers
  • What is the concentration of H+ at pH 4 in moldm-3 ?
    5·1 answer
  • Why are detergents bad for the environment?​
    6·1 answer
  • What type of energy transfer occurs as a coiled spring is released
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!