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
docker41 [41]
3 years ago
11

A blood sample is diluted by placing 0.2ml of the blood in a tube and filling the tube to the 5ml mark with a solution. what per

cent of the solution represents whole blood?
Chemistry
1 answer:
MariettaO [177]3 years ago
6 0
V₀=0.2 ml
v=5 mL

a=100v₀/v

a=100×0.2/5=4%

4%
You might be interested in
4. If an experimental value for a given observation was 415 nm while the theoretical value
Alex

Answer: % error of observation is 4.77%

Explanation:

Given:

Observation value = 415nm

theoretical value= 435.8nm

Percent error of observation = theoretical value- observation value/ theoretical value x 100 %

= 435.8-415/435.8= 0.04772 x 100 = 4.77%

therefore % error of observation is 4.77%

7 0
3 years ago
I will give brainliest to correct answer - no links
WINSTONCH [101]

Answer:

C - 23cm

Explanation:

6 0
3 years ago
Read 2 more answers
The atomic number of an atom is always equal to the number of its what ??
Marianna [84]
The answer is protons and electrons! Hope this helps :D
3 0
3 years ago
Read 2 more answers
Which reaction has a positive δs°? question 6 options:
Nastasia [14]
B. Because there are 3 molecules in right and 2 molecules in the left, so entropy rises.
3 0
3 years ago
During combustion, methane yields carbon dioxide and water. The unbalanced equation for this reaction is:CH4(g)+O2(g) → CO2(g)+
almond37 [142]

Answer:

CH₄(g)  +  2O₂(g) → CO₂(g)  +  2H₂O(l)

Mole ratios for the balanced equation be:

1:2, 2:1, 1:1, 1:2, 2:2

Explanation:

CH4(g)+O2(g) → CO2(g)+ H2O(l)

To balance a chemical equation, you must have the same mole of each element in both sides of the reaction (reactant side and product side)

CH₄(g)  +  2O₂(g) → CO₂(g)  +  2H₂O(l)

2 C

8 H

8 O

In  both side.

It takes 1 mole of methane to react with 2 mole of oxygen in order to produce 1 mol of dioxide and 2 mole of water.

Mole ratios for the balanced equation be:

Mole ratios for the balanced equation be:

1:2, 2:1, 1:1, 1:2, 2:2  - We should compare each compound

1 mol methane → 2 mole of oxygen

2 mole of oxygen → 1 mol of methane

2 mole of oxygen → 1 mol of dioxide

1 mole of dioxide → 1 mol of Methane

2 mole of water → 2 mole of oxygen (the same as opposite)

1 mol methane →  2 mole of water

2 mol of water → 1 mol of methane

4 0
3 years ago
Other questions:
  • For this experiment you want to prepare a 0.10 m solution of sodium hydroxide. how many grams of sodium hydroxide must be added
    5·1 answer
  • Zygote fungi spores can survive very harsh conditions
    12·1 answer
  • Which physical method can separate a mixture of steel ball bearings and marbles ?
    6·2 answers
  • Given that:2NO (g)→N2 (g)+O2 (g)N2 (g)+O2 (g)+Cl2 (g)→2NOCl (g) has an enthalpy change of −180.6 kJ has an enthalpy change of 10
    12·1 answer
  • Which of the following statements correctly describe(s) the driving forces for diffusion of Na+ and K+ ions through their respec
    6·1 answer
  • How many significant figures are in 31400
    5·1 answer
  • Please...help!
    10·1 answer
  • Please help
    15·2 answers
  • When molybdate (MoO3) and Zinc (Zn) are heated together they react in this equation:
    7·1 answer
  • What will happen if carbon dioxide is captured?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!