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
finlep [7]
3 years ago
9

Need help asap

Chemistry
1 answer:
zzz [600]3 years ago
5 0
Question 4 is C. 13 I believe
You might be interested in
Between 2014 and 2016, more than 25,000 children in Flint, Michigan, drank water that was contaminated with lead from lead pipes
-Dominant- [34]

Answer:

Regularly test the water in residents' homes.

Explanation:

The only way to know if tap water contains lead is to do tests to determine the levels of that metal in the water. Therefore, the state is under an obligation to constantly conduct such tests in the resident´s homes and thus determine whether the water supplied is fit for human consumption.  

The state after the tests must guarantee the population the treatment of the water to reduce the levels of lead. The main pipes that contain lead pipes must be changed, as well as those parts of the service connections made of lead.

5 0
3 years ago
Pls help me with this question
Drupady [299]
The answer is c hopefully I helped you
4 0
3 years ago
g Given that 50.0 mL of 0.100 M magnesium bromide reacts with 13.9 mL of silver nitrate solution according to the unbalanced equ
ipn [44]

Answer:

0.719M AgNO₃

Explanation:

Based on the reaction:

MgBr₂ + 2AgNO₃ ⇄ 2AgBr + Mg(NO₃)₂

<em>1 mole of magnesium bromide reacts completely with 2 moles of AgNO₃</em>

<em />

To find molarity of AgNO₃ solution we need to determine moles of AgNO₃ and, as molarity is the ratio of moles over liter (13.9mL = 0.0139L). Now, to determine moles of AgNO₃ we need to use the reaction, thus:

<em>Moles AgNO₃:</em>

<em />

Moles of MgBr₂ are:

50.0mL = 0.050L * (0.100mol / L) = 0.00500 moles of MgBr₂.

As the silver nitrate reacts completely and 2 moles of AgNO₃ reacts per mole of MgBr₂:

0.00500 moles MgBr₂ * (2 moles AgNO₃ / 1 mole MgBr₂) =

0.0100 moles of AgNO₃ are in the solution.

And molarity is:

0.0100 moles AgNO₃ / 0.0139L =

<h3>0.719M AgNO₃</h3>
3 0
3 years ago
Uranium in the isotope below had 140 nutrons​
Brut [27]

Answer:

It has 140 neutrons because Mass number= No of protons + no of neutrons

4 0
3 years ago
How many moles of hci are needed to form 230 moles of ci2?
LekaFEV [45]
<span>The answer is 335 dm³.</span>
4 0
3 years ago
Other questions:
  • as the temperature on a sample of gas with a constant volume increases, the pressure _____. decreases stays the same increases
    15·1 answer
  • Acid precipitation dripping on Limestone produces Carbon Dioxide by the following reaction:
    9·2 answers
  • What will molecules do at -272 degrees celsius​
    5·1 answer
  • Technetium 99 releases a gamma ray
    7·1 answer
  • Identify the spectator ions in this reaction. Check all that apply. 2H+ + CrO4– + Ba2+ + 2OH– Ba2+ + CrO4– + 2H2O H+ CrO4– Ba2+
    10·2 answers
  • How is the Scientific Method used in science?
    15·1 answer
  • Take a look at this dandelion. The yellow flower on the right is _______ pollinated and the seeds on the left are transported by
    15·2 answers
  • Find ionic compounds ​
    10·1 answer
  • 1. Describe the general procedure on how to wash glassware used for organic lab experiments. Also, include what the common solve
    5·1 answer
  • What is the molecular formula of each compound?<br> (c) Empirical formula HgCl (m = 5 472.1 g/mol)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!