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
Helen [10]
3 years ago
5

I will give BRAINIEst please!!! help meeee omg

Chemistry
1 answer:
Alexxandr [17]3 years ago
4 0

Answer:

(a)57.48 percent (b) 29.45 percent

Explanation:

copper(II) bromide is 29.45 percent copper and 71.54 percent bromine. so the first element percentage composition is always the percentage composition of the compound.

that goes same with sodium hydroxide. it  is 57.48 percent sodium, 40 percent oxygen, and 2.52 percent hydrogen.

You might be interested in
Write the expression for the equilibrium constant Keq for the reaction below: 2CO(g) + O2(g) ⇔ 2CO2(g) a. [CO2] / [CO] [O2] b. [
kodGreya [7K]

Answer: The answer is NOT A. [CO2] / [CO] [O2]

just took the test and I chose A. The test did not tell me the correct answer. Sorry.

Explanation: NOT, I REPEAT NOT: A. [CO2] / [CO] [O2]

5 0
3 years ago
Which will cause an increase in the reaction rate between molecules?
Mariana [72]
I think it's B. Molecules collide more frequently
3 0
3 years ago
if the climate warmed which of the following would be caused by rising temperatures? .a. an increase in sea levels. b. an increa
Klio2033 [76]

A warming climate can cause seawater to expand and ice over land to melt, both of which can cause a rise in sea level. Storm surge on a Louisiana highway shows the effects of rising sea levels. Many people are interested in climate change and how a changing climate will affect the ocean.

5 0
3 years ago
How many electrons will metals generally have in their outer shell
Goshia [24]

Answer:

1 - 3

Explanation:

- Look to see where metals are on the periodic table then look at what group they are in. The group tells you the number of valence electrons. Ex. 1A has one valence electron.

- Hope this helped! If you need a further explanation please let me know.

3 0
3 years ago
Chemistry screen shot below plzzzzzzz help i've been stuck forever
Oxana [17]

Answer:

True

Explanation: Imagine the Electrons is by the nucleus which give more energy.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Fter a radioactive atom decays, it is the same element that it was before with no measurable change in mass. Which kind of decay
    8·2 answers
  • Hydrochloric acid and sodium hydroxide will produce which two compounds
    8·1 answer
  • A level chem naming isomers​
    13·1 answer
  • You know that an unlabeled water bottle contains at least some water. You measure the freezing point of the unknown substance an
    10·2 answers
  • Please answer this question for meeeeeeeeeee pleeeeeeeeeease!
    5·1 answer
  • Help me please will give brainliest
    12·1 answer
  • What enzymes Break it down sugar ???
    5·1 answer
  • a solution of HCI contains 36 percent HCI,by mass and calculate the mole fraction of HCI in the solution?​
    14·1 answer
  • Which term describes energy stored in the bonds between atoms?
    14·1 answer
  • Uranium hexafluoride is a solid at room temperature, but it boils at 56C. Determine the density of uranium hexafluoride at 60.C
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!