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
Marysya12 [62]
3 years ago
9

True or false: Some parasites have complex life cycles where they live in different species of hosts at different stages

Chemistry
2 answers:
Fiesta28 [93]3 years ago
7 0

Answer:

True there are a few.

Explanation:

GrogVix [38]3 years ago
6 0

Answer:

true

Explanation:

You might be interested in
What is the concentration of x2??? in a 0.150 m solution of the diprotic acid h2x? for h2x, ka1=4.5??10???6 and ka2=1.2??10???11
lutik1710 [3]
The first dissociation for H2X:
                        H2X +H2O ↔ HX + H3O
initial                0.15                     0      0
change             -X                     +X      +X
at equlibrium 0.15-X                  X        X
because Ka1 is small we can assume neglect x in H2X concentration
     Ka1      = [HX][H3O]/[H2X]
4.5x10^-6 =( X )(X) / (0.15)
X = √(4.5x10^-6*0.15) 
∴X = 8.2 x 10-4 m
∴[HX] & [H3O] = 8.2x10^-4
the second dissociation of H2X
        HX + H2O↔ X^2 + H3O
    8.2x10^-4          Y         8.2x10^-4
Ka2 for Hx = 1.2x10^-11
Ka2       = [X2][H3O]/[HX]
1.2x10^-11= y (8.2x10^-4)*(8.2x10^-4)
∴y = 1.78x10^-5
∴[X^2] = 1.78x10^-5 m


4 0
3 years ago
What is the chemical formula for magnesium hydroxide?
ioda

Answer:

the chemical formula of magnesium hydroxide is Mg(OH)2

5 0
2 years ago
Read 2 more answers
A textbook measures 250 mm long, 225 mm wide and 50 mm thick. What is the volume of this book in mm3? What is the volume of this
Dvinal [7]

Answer:

2.81 × 10⁶ mm³

2.81 × 10⁻³ m³

Explanation:

Step 1: Given data

Length (l): 250 mm

Width (w): 225 mm

Thickness (t): 50 mm

Step 2: Calculate the volume of the textbook

The book is a cuboid so we can find its volume (V) using the following expression.

V = l × w × t = 250 mm × 225 mm × 50 mm = 2.81 × 10⁶ mm³

Step 3: Convert the volume to cubic meters

We will use the relationship 1 m³ = 10⁹ mm³.

2.81 × 10⁶ mm³ × 1 m³ / 10⁹ mm³ = 2.81 × 10⁻³ m³

6 0
2 years ago
Ill give u brainliest pls help i only have until 1:00!
OLEGan [10]

Perhaps when they are trying to find the distance of an asteroid to the Earth to find out whether or not it is a hazard to Earth.

7 0
3 years ago
Read 2 more answers
Where is the carbon in a temperate
tangare [24]

In the high temperate

8 0
3 years ago
Other questions:
  • If you are given the number of molecules in an unidentified chemical compound can you calculate the number of moles in this samp
    5·2 answers
  • ___in Earth’s___ is the up and down movements of plastic-like material within that layer.
    14·1 answer
  • Which of the following equations is balanced in a basic solution? A. ClO-(aq) + 2H-(aq) + 2e- Cl-(aq) + H2O(l) B. ClO-(aq) + H2O
    8·2 answers
  • Which statements about gravity are true
    12·1 answer
  • Rocks that originated from the liquid phase are classified as
    7·2 answers
  • Now describe the properties of the compound you picked(gold). Compare the properties of the compound with the properties of the
    9·1 answer
  • Law of electrolysis was given by<br>a.lamark. b.Ostwald<br>c.Faraday. d.Arrhenius<br>​
    7·1 answer
  • True or false, the four units that must always be used when using the ideal gas law are liters, atm, Kelvin, and grams
    13·1 answer
  • Which buffer system is found in the human body?
    6·2 answers
  • Near Tatooine's famous Mos Eisley Space port you found a 774.92 mL block of gold. What is the mass in kilograms of this block? H
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!