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
jolli1 [7]
2 years ago
9

Answer the question below ​

Chemistry
1 answer:
goldenfox [79]2 years ago
7 0

Answer:

Be

Explanation:

Reactivity increases from left to right and decreases from the top of the column to the bottom of column

You might be interested in
a chemist dissolves 0.564 moles of manganese (IV) oxide (MnO2) in water, and adds enough water to make 0.510 L of solution. Calc
ladessa [460]

Answer:

The molarity of the solution is 1.1 \frac{moles}{liter}

Explanation:

Molarity is a measure of the concentration of that substance that is defined as the number of moles of solute divided by the volume of the solution.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

molarity=\frac{number of moles of solute}{volume}

Molarity is expressed in units \frac{moles}{liter}

In this case

  • number of moles of solute= 0.564 moles
  • volume= 0.510 L

Replacing:

molarity=\frac{0.564 moles}{0.510 L}

Solving:

molarity= 1.1 \frac{moles}{liter}

<u><em>The molarity of the solution is 1.1 </em></u>\frac{moles}{liter}<u><em></em></u>

4 0
2 years ago
Which molecule is shown below?
antoniya [11.8K]

Answer:

D. 3-methylheptane

Explanation:

7 0
3 years ago
Read 2 more answers
Are these synthesis decomposition single replacement or double replacement?
marishachu [46]

Answer:

1. Synthesis

2. Decomposition

3. Single replacement

4. Synthesis

5. Decomposition

6. Synthesis

Explanation:

Kind of a hard picture to look at but let me define each chemical reaction:

Synthesis:

a + b ---> ab   In synthesis elements/compounds come together to form new                compounds

Decomposition:

ab ---> a + b   In decomposition a compound breaks down to form 2 elements/compounds

Single replacement:

a + bc ---> b + ac   In a single replacement one element/compound takes the place of another element/compound.

Double replacement

ab + cd ---> ad + bc In a double replacement 2 compounds exchange different elements/compounds.

Now, let's go through the assignment

1. P + O2 --> P4O10  This is a synthesis reaction because the two elements (P and O) came together to form one compound.

2. HgO ---> Hg + O2  This is a decomposition reaction because HgO broke into separate elements Hg and O.

3. Cl2 + NaBr ---> NaCl + Br2  This is a single replacement reaction because chlorine (Cl) replaced the spot of bromine (Br) to bond with sodium (Na).

4.  Mg + O2 ---> MgO  This is a synthesis reaction because two elements (Mg and O) came together to form one compound.

5. Al2O3 ---> Al + O2  This is a decomposition reactions because Al2O3 broke into separate elements Al and O.

6. H2 + N2 ---> NH3  This is a synthesis reaction because two elements (H and N) came together to form one compound.

<em>I hope this helps!!</em>

<em>- Kay :)</em>

7 0
2 years ago
Determine whether each of the following cations is acidic or pH-neutral.
riadik2000 [5.3K]

Answer:

1. Acidic

2.Acidic

3, Acidic

All are acidic

5 0
3 years ago
"What is salt composed of?" Maria wondered. She took a microscope from the cabinet in her science classroom, put some salt on a
Dmitrij [34]
<span>No. Salt, like all matter is composed of atoms.</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • By what factor does [h+ ] change for each ph change? (a) 3.20 units
    15·1 answer
  • What option would this be? The following equation is a example of _______ decay.
    6·1 answer
  • If 24.6 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 301 Kelvin and 1.01 atmosph
    11·1 answer
  • Sodium chloride was dissolved in water to produce a 1.5M solution. Explain what this concentration tells us about the NaCl solut
    14·1 answer
  • Lead is listed below zinc in the activity series.
    15·2 answers
  • The development of nuclear power has provided electricity for less money, but at a cost. What may be considered a "cost" of nucl
    12·2 answers
  • 1) ΔS depends not merely on q but on ______ . Although there are many possible paths that could take a system from its initial t
    12·1 answer
  • Which of the following combination of elements would result in covalent compound? * W X Y Z Vand X Wand Z Y and Z Wand y​
    11·1 answer
  • a solution is prepared by dissolving 55g of CaCl2 into 300g of water. if the Kf of water is -1.86 c/m, shat is the freezing poin
    12·1 answer
  • After writing and balancing the equation, what's the next step in using bond energies to calculate the enthalpy of a reaction? Q
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!