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
goblinko [34]
3 years ago
10

A lab technician mixes a 0.730 M solution of sodium bromide (NaBr) and water. The volume of the solution is 135 milliliters.

Chemistry
2 answers:
GarryVolchara [31]3 years ago
6 0

Answer: 10.1

Explanation:

Ivenika [448]3 years ago
3 0

Answer:

We need 10.14 grams of sodium bromide to make a 0.730 M solution

Explanation:

Step 1: Data given

Molarity of the sodium bromide (NaBr) = 0.730 M

Volume of the sodium bromide solution = 135 mL = 0.135 L

Molar mass sodium bromide (NaBr) = 102.89 g/mol

Step 2: Calculate moles NaBr

Moles NaBr = Molarity NaBr * volume NaBr

Moles NaBr = 0.730 M * 0.135 L

Moles NaBr = 0.09855 moles

Step 3: Calculate mass of NaBr

Mass NaBr = 0.09855 moles * 102.89 g/mol

Mass NaBr = 10.14 grams

We need 10.14 grams of sodium bromide to make a 0.730 M solution

You might be interested in
The radioactive substance cesium-137 has a half-life of 30 years. The amount At (in grams) of a sample of cesium-137 remaining a
stealth61 [152]

<u>Answer:</u> The amount of sample left after 20 years is 288.522 g and after 50 years is 144.26 g

<u>Explanation:</u>

We are given a function that calculates the amount of sample remaining after 't' years, which is:

A_t(t)=458\times (\frac{1}{2})^{\frac{t}{30}

  • <u>For t = 20 years</u>

Putting values in above equation:

A_t(t)=458\times (\frac{1}{2})^{\frac{20}{30}

A_t(t)=288.522g

Hence, the amount of sample left after 20 years is 288.522 g

  • <u>For t = 50 years</u>

Putting values in above equation:

A_t(t)=458\times (\frac{1}{2})^{\frac{50}{30}

A_t(t)=144.26g

Hence, the amount of sample left after 50 years is 144.26 g

6 0
3 years ago
Help me. correct answer will be marked as brnlst
Vlada [557]

Answer:

PCI3

Explanation:

It does not obey the octet rule on the nitrogen atom.

5 0
2 years ago
Read 2 more answers
Which element is being represented by the electron configuration below? [Ar] 4s2 3d3
Nina [5.8K]
Answer:
chromium (Cr)
4 0
3 years ago
“NH4VO3” is a... <br><br> Symbol <br><br><br> Name <br><br><br> Chemical formula
shepuryov [24]

Answer:

its a chemical formula, it has numbers and symbols

3 0
3 years ago
Read 2 more answers
Which part of atom is responsible for chemical bonding
yulyashka [42]

Answer:

electrons are responsible for the chemical bonding

6 0
3 years ago
Other questions:
  • Which of these would DECREASE the solubility of a solid in water?
    7·1 answer
  • How does the size of the atoms relate to how reactive it is?
    7·2 answers
  • Which ppower source directs the electrons from oxidation reduction reations to flow through a device to give the device power?
    11·1 answer
  • A primary amine contains a five-membered carbon ring. The degree of unsaturation for the five-membered carbon ring is equal to t
    6·1 answer
  • Which environmental changes occur fastest? oil spill changing seasons global warming pond succession Previous hurry plzz
    5·1 answer
  • Alkaline Earth Metals chemical properties on the periodic table
    11·1 answer
  • The most laterally placed of the three erector spinae components, the ___________ group, is composed of three parts: cervical, t
    8·2 answers
  • If everyone on the planet used the same amount of resources as an average American, what percent of the Earth would need to be u
    10·1 answer
  • 3. A property that does NOT depend on the amount of matter such as density, color, temperature. A. Intensive B. Extensive​
    6·1 answer
  • A scientist proposes that an iron bar be divided into smaller and smaller pieces. what occurs during this process? select the wo
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!