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
arlik [135]
3 years ago
15

Mrs. Sail's class wanted to observe a local pond. The class collected some pond water to analyze. When they placed a drop of the

water under a microscope, they saw many microorganisms in the water. The pond water looked clear when they collected it in the jar, so what could explain the presence of these organisms? A) They must have grown in the jar overnight. B) The microorganisms are too small to be seen with the naked eye. C) Somehow, the jar was contaminated on the way from the pond to the class. D) The microorganisms only inhabit a very small section of the lake, and the class got lucky.
Chemistry
2 answers:
olasank [31]3 years ago
8 0

B) the microorganisms are to small too see with the naked eye

LiRa [457]3 years ago
3 0

B. its more of a reliable answer because it's true. You cant see it with the naked eye if you had to put in under a microscope.



I might be wrong.

You might be interested in
What pressure, in atm, would be exerted by 0.023 grams of oxygen (O2) if it occupies 31.6 mL at 91
Vikentia [17]

Answer:  A pressure of 0.681 atm would be exerted by 0.023 grams of oxygen (O_2) if it occupies 31.6 mL at 91^{o}C.

Explanation:

Given : Mass of oxygen = 0.023 g

Volume = 31.6 mL

Convert mL into L as follows.

1 mL = 0.001 L\\31.6 mL = 31.6 mL \times \frac{0.001 L}{1 mL}\\= 0.0316 L

Temperature = 91^{o}C = (91 + 273) K = 364 K

As molar mass of O_2 is 32 g/mol. Hence, the number of moles of O_2 are calculated as follows.

No. of moles = \frac{mass}{molar mass}\\= \frac{0.023 g}{32 g/mol}\\= 0.00072 mol

Using the ideal gas equation calculate the pressure exerted by given gas as follows.

PV = nRT

where,

P = pressure

V = volume

n = number of moles

R = gas constant = 0.0821 L atm/mol K

T = temperature

Substitute the value into above formula as follows.

PV = nRT\\P  \times 0.0316 L = 0.00072 mol \times 0.0821 L atm/mol K \times 364 K\\P = \frac{0.00072 mol \times 0.0821 L atm/mol K \times 364 K}{0.0316 L}\\= 0.681 atm

Thus, we can conclude that a pressure of 0.681 atm would be exerted by 0.023 grams of oxygen (O_2) if it occupies 31.6 mL at 91^{o}C.

4 0
2 years ago
What words do scientist use to classify their ideas?​
Nady [450]

Answer:

taxonomy

Explanation:

6 0
3 years ago
2. An element is all the way through,​
elena55 [62]
?? Is that the whole question?
6 0
2 years ago
State whether it would be worthwhile to investigate finding a catalyst to use in this reaction under standard conditions and exp
mash [69]

Yes, it will be worthwhile to investigate finding a catalyst to use in this reaction under standard conditions because it is negative.

<h3>What is a Catalyst?</h3>

This is a substance which speeds up the rate of a chemical reaction by lowering the activation energy.

ΔG being negative indicates a a slow reaction which is why a catalyst under standard conditions should be used.

Read more about Catalyst here brainly.com/question/12507566

#SPJ1

3 0
2 years ago
Many homeowners treat their lawns with CaCO3(s) to reduce the acidity of the soil. Write a net ionic equation for the reaction o
Aliun [14]

Many homeowners treat their lawns with CaCO3(s) to reduce the acidity of the soil. The net ionic equation for the reaction of CaCO3(s) with a strong acid, HCl (I chose HCl because it is a strong acid) is CaCO3(s) +2 HCl(aq) → CaCl2(s) + H2O(aq) + CO2(g).

3 0
3 years ago
Other questions:
  • What is scientific notation
    11·1 answer
  • Which of the following is the correct rank of increasing electron affinities (from less exothermic to more exothermic)? Select t
    10·1 answer
  • is the atomic mass of chlorine represented by the mass of the most common naturally occurring isotope in chlorine?
    11·1 answer
  • Why does a cell phone have more mass than a feather?
    10·1 answer
  • 6) What is located in the nucleus?
    8·1 answer
  • Raina is ready to start taking photographs at a crime scene after she secured the crime scene. Which photos should she take firs
    15·1 answer
  • Please help help ASAP Please help It’s do in a 1 hour What conclusion can you draw about the relationship between physical activ
    8·2 answers
  • How many O atoms are in 4C₆H₁₂O₆
    8·1 answer
  • Under what conditions will a gas be most likely to exhibit the ideal gas properties predicted by the ideal gas law?
    15·1 answer
  • When a reaction mixture reaches chemical equilibrium, ____.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!