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
vladimir1956 [14]
2 years ago
6

Need answer for this within 1 hour plzz or will fail:(

Chemistry
1 answer:
masya89 [10]2 years ago
6 0

Answer:

I think #1 is b, but if you believe its A i say go for it depending on your confidence :)

Explanation:

You might be interested in
If 18.1 mLmL of 0.800 M HClM HCl solution are needed to neutralize 5.00 mLmL of a household ammonia solution, what is the molar
AnnyKZ [126]

Answer:

Concentration of ammonia = 3M

Explanation:

The reaction for the question is a neutralization reaction between HCl and NH₃

The chemical equation for the reaction is given as

HCl + NH₃ → NH₄CL

1       :     1          1

Volume of HCl = 18.1ml = 0.0181L

Volume of NH₃ = 5ml= 0.005L

Molar concentration of HCl=0.8M

Molar Concentration of NH₃ =?

Number of moles(n)= Molar concentration × Volume

n = C × V

n of HCL= 0.8 × 0.0181

n = 0.01448moles

Since mole ration for the reaction from the balanced equation above is 1:1,

n of NH₃ = 0.01448

molar concentration (C) of NH₃ = n/v

C of NH₃ = 0.01448/0.005

C of NH₃=2.896

C OF NH₃ =3M

4 0
3 years ago
NEED HELP ON 17,18,19,20,21,22,23. ONLY IF YOU ARE POSITIVE ABOUT THE ANSWER!!!!
Alex777 [14]

Answer:

17. D. Chemical change

18. C. Cell wall

19. D. To transfer matter and energy within and between organisms.

20. A. Transporting materials

21. C. Carbon dioxide

22. A. Cellular respiration

23. C. Produce food and give off oxygen

Explanation:

I have been able to supply the correct answers. The cell wall functions as a structure that provides structural support and protection to the cell. It is tough, flexible and at times rigid. In a chemical change, new materials with new properties are manufactured. So, the process of photosynthesis is a chemical change.

The endoplasmic reticulum actually transports material. It transports materials like protein and lipids made within the cell and sends it to where they are needed.

Carbon dioxide  is the the gas that animals give off and plants use it during photosynthesis. Cellular respiration involves the activities that result to the breaking down of food in order to release energy.

8 0
3 years ago
A Transair plane is flying east at 275 km/h. A Worldair plane is flying west at 275 km/h. Are the two planes flying at the same
finlep [7]
I think thier speed may differ relatively due the movement of wind on each sides. itz very obvious that they change even the time of the day may count

4 0
4 years ago
If 5.0 grams of sucrose, C12H22O11, are dissolved in 10.0 grams of water, what will be the boiling point of the resulting soluti
GaryK [48]

Answer : The boiling point of the resulting solution is, 100.6^oC

Explanation :

Formula used for Elevation in boiling point :

\Delta T_b=i\times k_b\times m

or,

T_b-T^o_b=i\times k_b\times \frac{w_2\times 1000}{M_2\times w_1}

where,

T_b = boiling point of solution = ?

T^o_b = boiling point of water = 100^oC

k_b = boiling point constant  = 0.52^oC/m

m = molality

i = Van't Hoff factor = 1 (for non-electrolyte)

w_2 = mass of solute (sucrose) = 5.0 g

w_1 = mass of solvent (water) = 10.0 g

M_2 = molar mass of solute (sucrose) = 342.3 g/mol

Now put all the given values in the above formula, we get:

(T_b-100)^oC=1\times (0.52^oC/m)\times \frac{(5.0g)\times 1000}{342.3\times (10.0g)}

T_b=100.6^oC

Therefore, the boiling point of the resulting solution is, 100.6^oC

5 0
3 years ago
Which list correctly aligns the levels of organisms from the least to the most complex? A. organ → system → tissue → cell B. tis
enyata [817]
It should be D, cells are parts, tissue is part and organ is part of a system.

6 0
3 years ago
Read 2 more answers
Other questions:
  • How is the weight of an object in a spaceship near the moon related to the distance that the spaceship is from the moon? A) Ther
    10·2 answers
  • Use the drop-down menu to complete the statement. The atoms in a ... have a definite volume, but move quickly enough to overcome
    7·2 answers
  • Will mark brainliest!
    10·1 answer
  • 14 km is how many centimeters?
    12·1 answer
  • To make lemonade, a recipe requires 4 lemons, 30 ounces of sugar, and 2 pints of water. From an average lemon one can squeeze ou
    15·1 answer
  • How many moles are represented by 9.34 x 1021 sodium atoms
    7·1 answer
  • La cantidad de materia que compone un sistema y que no varia de un lugar a otro se llama?
    9·1 answer
  • NO LINKS PLEASE!
    5·1 answer
  • Graphite, an allotrope of carbon, is converted into cubic diamond through a process that may take a billion years or longer. As
    11·1 answer
  • How many grams of carbon dioxide are produced by complete combustion of 5 grams of c5h10
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!