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
kozerog [31]
3 years ago
13

I need help please i need it today

Chemistry
1 answer:
creativ13 [48]3 years ago
8 0

Answer:

what help.....

i don't understand your question what help....

can you told me what help...

You might be interested in
When interviewed, Mr. Harrison was discussing barometric pressure and the low-pressure system moving in that may cause a change
Zarrin [17]

A meteorologist?? I could be totally wrong though! :)


6 0
2 years ago
Read 2 more answers
If we read the reaction as X + Y → Z + Q it is<br> A. endothermic<br> B. exothermic
Korvikt [17]
As you can see in the picture we have +ΔH so that means for this reaction we need to GET heat. so the answer is A. endothermic :))
i hope this is helpful
have a nice day 
4 0
3 years ago
Read 2 more answers
1. Why were atoms given the name of "atom" which means "unable to be cut?"
alexandr1967 [171]

Answer:

These particles were considered so small that they were unable to be cut

3 0
3 years ago
8. The standard enthalpy of formation of RbF(s) is –557.7kJ/mol and the standard enthalpy of formation of RbF(aq, 1 m) is –583.8
garri49 [273]

Explanation:

Given

The enthalpy of formation of RbF (s) is –557.7kJ/mol

The standard enthalpy of formation of RbF (aq, 1 m) is –583.8 kJ/mol

The enthalpy of solution of RbF = Enthalpy of RbF (aq) - Enthalpy of formation of RbF (s)

= -583.8 - (-557.7)  kJ/mol

= -26.1 kJ/mol

The enthalpy is negative which means that the temperature will rise when RbF is dissolved.

3 0
3 years ago
Define the term macromolecule
makkiz [27]

Explanation:

a molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.

4 0
2 years ago
Other questions:
  • Did I get the answer correct, and could someone possibly explain?
    14·1 answer
  • How does having no nucleus effect an rcbs life span?
    12·1 answer
  • Silicones can be oils or rubber-like materials depending on ________. Select one: A. the silicon-to-oxygen ratio B. the length o
    14·1 answer
  • Why are pennies good for simulating radioactive atoms? Check all that apply. Pennies have two sides—one to represent radioactive
    7·2 answers
  • Prior to the Industrial Revolution, the majority of the population in England consisted of the light colored variation. The dark
    6·1 answer
  • The diagram below shows the movement of Earth plates.
    5·2 answers
  • Which of the following polyatomic ions has a 3- ionic charge?
    11·1 answer
  • Why is water important to cells
    5·2 answers
  • How many of each kind of atom is in one molecule of water? 1 hydrogen atom and 2 oxygen atoms 1 hydrogen atom and 1 oxygen atom
    6·1 answer
  • Which form of emission is commonly not written in nuclear equations because they do not affect charges, atomic numbers, or mass
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!