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
Alja [10]
3 years ago
10

What is a unicellular organism?

Chemistry
2 answers:
Schach [20]3 years ago
3 0
An organism that consists of one cell
Paul [167]3 years ago
3 0
The answer is D An organism that consist of one cell
You might be interested in
Why would a scientist only use observations to formulate a theory rather than follow the scientific method?
Alenkinab [10]

Answer: Observation is essential in science. Scientists use observation to collect and record data, which enables them to construct and then test theories

Explanation:

7 0
2 years ago
The reaction nacl(s) → nacl(aq) is performed in a coffee cup calorimeter, using 100 ml of h2o(l) and 5.00g of nacl. if the tempe
MrRissso [65]

Since the density of water is 1 g /mL, hence there is 100 g of H2O. So total mass is:

m = 100 g + 5 g = 105 g

 

=> The heat of reaction can be calculated using the formula:

δhrxn = m C ΔT

where m is mass, C is heap capacity and ΔT is change in temperature = negative since there is a decrease

 

δhrxn = 105 g * 4.18 J/g°C * (-2.30°C)

δhrxn = -1,009.47 J

 

=> However this is still in units of J, so calculate the number of moles of NaCl.

 

moles NaCl = 5 g / (58.44 g / mol)

moles NaCl = 0.0856 mol

 

=> So the heat of reaction per mole is:

δhrxn = -1,009.47 J / 0.0856 mol

δhrxn = -11,798.69 J/mol = -11.8 kJ/mol

5 0
3 years ago
If 8.00 g NH4NO3 is dissolved in 1000 g of water, the water decreases in temperature from 21.00 degrees Celsius to 20.39 degrees
telo118 [61]

Answer:

25.7 kJ/mol

Explanation:

There are two heats involved.

heat of solution of NH₄NO₃ + heat from water = 0

q₁  +  q₂  =  0

n  =  moles of NH₄NO₃  =  8.00 g NH₄NO₃  ×  1 mol NH₄NO₃/80.0 g NH₄NO₃          

∴ n =   0.100 mol NH₄NO₃

q₁ = n * ΔHsoln = 0.100 mol * ΔHsoln

m  =  mass of solution  =  1000.0 g + 8.00 g  =  1008.0 g

q₂  =  mcΔT  = 58.0 g  ×  4.184 J°C⁻¹  g⁻¹  × ((20.39-21)°C) = -2570.19 J

q₁  +  q₂  =  0.100 mol  ×ΔHsoln  – 2570.19 J  =  0

ΔHsoln  =  +2570.19 J  /0.100 mol  =  +25702 J/mol  =  +25.7 kJ/mol

7 0
3 years ago
What is the difference between alkali metals and halogens?
Airida [17]
<h3>→soft and reactive metals. </h3>

Explanation:

<h3>Alkali metals are soft and reactive metals. They react vigorously with water and become more reactive. And other hand halogens are reactive non metals. ... Halogens can be solid, liquid, gaseous at room temperature and the melting point increase when they get bigger.</h3>

<h2>#CAREYINGTOLEARN❤️</h2>
4 0
2 years ago
Read 2 more answers
Electromagnetic waves that are harmful to living things are
Westkost [7]
B. both high energy and low energy waves
5 0
2 years ago
Other questions:
  • The proper protective equipment for working with hazardous chemicals in the lab includes close lab coat goggles and a fume Hood
    15·1 answer
  • Enter the net ionic equation for the reaction that occurs when aqueous hydrobromic acid and aqueous barium sulfide are mixed.
    9·1 answer
  • Why do tropical cyclones spawn around ? please include 5 sentences
    15·1 answer
  • What is stronger than steel but cowers from the sun?
    13·2 answers
  • A vehicle travels 2345 meter in 35 second toward the evening sun in the West. What is its speed? A. 47 m/s West
    10·1 answer
  • Nuclear decay is a first-order kinetics process. What is the half-life of a radioactive isotope if it takes 233 minutes for the
    9·1 answer
  • Which phrase describes a homogeneous catalyst?
    7·2 answers
  • According to the principle of the conservation of mass the mass of the sodium sulfate was the following PLS HELP I NEED TO TURN
    8·1 answer
  • If you have exactly 2.00 moles each, of two different substances, then which of the following must be true about the two samples
    10·1 answer
  • Chemical molecules that impart positional information through their concentration gradient are called
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!