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
jasenka [17]
3 years ago
9

Need help asap will give brainly

Chemistry
1 answer:
uranmaximum [27]3 years ago
4 0

Answer:

8. B

9. D

10. A

Explanation:

give brainliest pls ^-^

You might be interested in
Potassium permanganate, KMnO, and glycerin, C3H5(OH)3, react explosively according to the
Finger [1]

The volume of CO2 at STP =124.298 L

<h3>Further explanation</h3>

Given

Reaction

4 KMnO4, +4 C3H5(OH)5, -7K2CO3, + 7 Mn2O3, +5 CO2, + 16 H2O

701,52 g of KMnO4

Required

volume of CO2 at STP

Solution

mol KMnO4 (MW=158,034 g/mol) :

mol = mass : MW

mol = 701.52 : 158.034

mol = 4.439

mol CO2 from equation : 5/4 x mol KMnO4 = 5/4 x 4.439 = 5.549

At STP 1 mol = 22.4 L, so for 5.549 moles :

=5.549 x 22.4

=124.298 L

4 0
3 years ago
Please helpplease please..help
Vinil7 [7]

Answer:

vague symptoms are characteristic of an acute toxin, because of the of the lack of well defined consistency that these symptoms have in relation to the course of the disease progress.

3 0
3 years ago
The name 3-chloro-2-propylbutane is not an accepted name for the compound described. what would be the correct name for this com
Illusion [34]
The longest hydrocarbon chain in the given compound is hexane, therefore it is the parent chain to be considered with one methyl group attached to the 3rd carbon and one chloro attached on the 2nd carbon, therefore the name of the compound is 2-chloro-3-methylhexane
3 0
3 years ago
How many grams of calcium bromide are in 50.0 mL of a 0.25 M calcium bromide solution?
lianna [129]
C_{m}=\frac{n}{V_{r}}\\\\&#10;m=\frac{m}{M}\\\\&#10;C_{m}=\frac{m}{MV_{r}} \ \ \ \ \Rightarrow \ \ \ \ m=C_{m}MV_{r}}\\\\&#10;C_{m}=0.25\frac{mol}{L}\\&#10;M_{CaBr_{2}}=200\frac{g}{mol}\\&#10;V_{r}=50mL=0.05L\\\\&#10;m=0.25\frac{mol}{L}*200\frac{g}{mol}*0.05L= \emph{\textbf{2.5g}}
8 0
3 years ago
10. Air is a homogenous mixture of gases. Oxygen is 20% by volume of air typically. What
raketka [301]

Answer:

893 moles

Explanation:

An ideal gas at STP occupies 22.4 liters. Calculating Oxygen as if it were an ideal gas there are . 893 moles of Oxygen in 20.0 liters.

3 0
3 years ago
Other questions:
  • During respiration _____.
    10·2 answers
  • A water molecule consists of an oxygen atom and two hydrogen atoms covalently bonded in a bent shape. Oxygen however, attracts t
    6·1 answer
  • Which of the following does not necessarily describe ethics? A. Laws that all people must follow B. Guidelines for good behavior
    13·1 answer
  • Will essential oil penetrate through clothes
    13·2 answers
  • Label the dimensional analysis according to the stoichiometry problem: 12.2 mol of C5H6 combusts to form CO2 and H2O, how many m
    9·1 answer
  • Which one has more Thermal Energy? A cup of boiling water or a bathtub of warm water? Explain! Please answer if you can, thank y
    11·1 answer
  • Jimmie places a soccer ball on the ground and kicks it toward the goal. The ball moves along the ground toward the goal. Why doe
    7·2 answers
  • The waste product given off during photosynthesis is:
    5·2 answers
  • The electron configuration of an element describes _____. Multiple choice question. the relationship between the nucleus of an a
    8·1 answer
  • What is the best definition of weight​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!