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
stellarik [79]
3 years ago
14

PLZ HELPPPP

Chemistry
2 answers:
Dmitrij [34]3 years ago
8 0

Answer:

Explanation:

It has to be less than 100% efficient. There is always some cost in changing one form of energy to another especially if work is involved.

AlladinOne [14]3 years ago
6 0

Answer:

every real machine must be less than 100 because of the force that overcome friction

You might be interested in
A child has blue eyes whereas his mother has brown eyes. Which of the following explains why the child has blue eyes? Some diet
Gre4nikov [31]

Answer:

A piece of DNA from the father carried the trait for blue eye color

4 0
3 years ago
Read 2 more answers
For the reaction H2(g) + I2(g) 2HI(g), Kc = 50.2 at 445ºC. If [H2] = [I2] = [HI] = 1.75  10-3 M at 445ºC, which one of these st
Soloha48 [4]

Answer: C) The concentration of HI will increase as the system approaches equilibrium.

Explanation:

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as K_c

K is the constant of a certain reaction when it is in equilibrium, while Q is the quotient of activities of products and reactants at any stage other than equilibrium of a reaction.

For the given chemical reaction:

H_2(g)+I_2(g)\rightarrow 2HI(g)

The expression for Q_c is written as:

Q_c=\frac{[HI]^2}{[H_2]^1[I_2]^1}

Q_c=\frac{(1.75\times 10^{-3})^2}{(1.75\times 10^{-3})^1\times (1.75\times 10^{-3})^1}

Q_c=1.00

K_c=50.2

Thus as K_{eq}>Q , the reaction will shift towards the right i.e. towards the product side.

3 0
4 years ago
the lewis dot structure rule states that S=N-A. recall that A represents the TOTAL number of valence electrons available from al
Afina-wow [57]

Answer: oh i thought i knew it nvm im sorry love

Explanation:

6 0
3 years ago
In the 1700s and 1800s. royalty in Europe often married their close relatives: furthermore, recessive genetic diseases such as h
satela [25.4K]

Answer:

Hi

Inbreeding increases the chances of transmission to the next generation of types of inherited diseases. Our genome is made up of two copies of each gene, one inherited from our father and one from our mother. In order for autosomal recessive diseases to be found, the two copies of the gene need to be mutated. If only one of the copies is mutated and the other is not, the person is a carrier but does not manifest any of the clinical symptoms of the disease. One of these diseases is hemophilia. An example of this is Prince Leopold, he was the first real member affected by hemophilia, in this case hemophilia B. When one of the proteins necessary for blood clotting is missing, the wounds take much longer to heal. Small cuts are not usually a problem, but major injuries can cause bleeding.

The defective gene in people who suffer from this type of hemophilia is called F9, and it is located on the X chromosome. That means it has an inheritance linked to sex. Women have two X chromosomes (XX), while men have an X chromosome and one Y (XY). Since hemophilia alleles are recessive, two defective alleles are needed in women to suffer from the disease, while only one is needed in men. Therefore, the disease is much more common in men. The most frequent hemophilia is that of type A and is due to a defect in coagulation factor VIII, whose gene also has an inheritance linked to sex.

Explanation:

4 0
3 years ago
How low the freezing point can be depressed depends on the
Rainbow [258]
Answer is c I believe
5 0
4 years ago
Read 2 more answers
Other questions:
  • Explain why the replacement of the glutamic acid by valine changes the way that molecules of b-globin interact with each other.
    12·1 answer
  • What is the [OH] if the pH is 4.7<br>A. 4.7<br>B. 5.0<br>C. 4.7 x 10 -10<br>D. 5.0 x 10 -10​
    9·1 answer
  • What is the potential energy when you roll a object down a ramp
    5·2 answers
  • Define the term coordinate covalent bond and give an example. <br><br> please help, thank you :)
    10·1 answer
  • : Name the parts of transverse waves?
    7·1 answer
  • Which statement describes how Earth compares to the moon?
    6·2 answers
  • Magnesium element has three isotopes: 24Mg, 25Mg, and 26Mg. The natural abundance of the isotopes on Earth is 78.99% 24Mg with a
    13·1 answer
  • For the reaction Na2CO3+Ca(NO3)2⟶CaCO3+2NaNO3 how many grams of calcium carbonate, CaCO3, are produced from 79.3 g of sodium car
    6·1 answer
  • Question 8
    11·2 answers
  • 1. Related to the number of particles in a gram of
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!