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
schepotkina [342]
3 years ago
9

HELP IM CONFUSED I GIVE BRAINLIEST

Chemistry
1 answer:
alisha [4.7K]3 years ago
7 0

Answer:

I⁻ , Sr²⁺ , K⁺

Explanation:

refer to the periodic table and memorize trends in charges.

You might be interested in
29. What is E for a system which has the following two steps:
jasenka [17]

Answer:

Zero

Explanation:

Recall that;

E = q + w

Where;

q = heat, w = work done

When heat is absorbed by the system q is positive

When heat is evolved by the system q is negative

When the system does work, w is negative

When work is done on the system w is positive

Step 1

ΔE1= 60 KJ + 40 KJ = 100KJ

Step 2

ΔE2= (-30 KJ) + (-70 KJ) = (-100) KJ

ΔE1 + ΔE2= 100KJ + (-100) KJ = 0KJ

4 0
3 years ago
Select all the correct answers.
Archy [21]

Answer:

The chemical formula for ammonium hypochlorite is NH4ClO.

The chemical formula for ammonium nitrate is NH4NO3.

Explanation:

These two are correct

4 0
3 years ago
Which is an element?<br> A: H20<br> B: NaCl<br> C: Mg<br> D: CO
Talja [164]
The answer is option D "CO." Co also known as Cobalt is the 27th element on the periotic table. It was discovered in <span>1735, it's boiling point is 3200 k.</span>

Atomic mass: 58.9332
Protons: 27
Neutrons: 32
Electrons: 27

Hope this helps!

3 0
3 years ago
Read 2 more answers
A scientist finds that one volume of an unknown gas X combines with two volumes of another gas Y to form two volumes of a new ga
MariettaO [177]

Answer:

Gas X

Explanation:

The given reaction can be written in the form of chemical equation as shown below as:

X+2Y\rightarrow 2XY_2

According to law of conservation of mass, the moles of each substance in the reaction must be equal on both reactant and product side.

Also, the question asks for the gas which is diatomic. XY_2 cannot be diatomic as the formula contains 3 atoms.

Between gas X and gas Y , <u>X has to be diatomic for the reaction to balance </u>as:

X_2+2Y\rightarrow 2XY_2

3 0
4 years ago
Since children of the first union/marriage have the trait the great- grandparents do not have the trait they must have been carr
stira [4]

Answer:

a.true

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which methods will help you properly identify pH with indicator paper? Check all that apply. Set a piece of pH paper in front of
    12·2 answers
  • Matter is anything that has mass and takes up space. Which units of measurement can you use to describe these two properties?
    8·2 answers
  • What is the mass of ice that is melted by 755 J of heat melt a piece of ice?
    5·1 answer
  • If a farmer wants to increase the health of his crops, he could apply a nitrogen-based fertilizer. why is nitrogen important to
    15·1 answer
  • What caused the bonding of two atoms which undergo an ionic bond?
    13·1 answer
  • Charles Lyell believed that:
    10·1 answer
  • Which of the following is a product of the photosynthesis reaction?
    7·2 answers
  • What role do plants play in reducing carbon dioxide in the atmosphere? How can plants play a role in combating climate change?
    6·1 answer
  • PLEASE HELP!!!!!!!!!!!
    12·1 answer
  • 12)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!