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3 years ago

Chromium 6 is commonly referred to as?

Chemistry

1 answer:

sasho [114]3 years ago

5 0

Chromium 6 is commonly referred to as?
Hexavalent chromium

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Give the correct balanced equation for the single replacement reaction of magnesium with aluminum oxide. A) Mg + AlO → MgO + Al

solniwko [45]

Answer is "C".

Explanation

Single replacement reaction is a type of reaction which one reactant reacts with another and makes a product by replacing one element by another.

Mg (Magnesium) reacts with Al₂O₃ (Aluminium oxide) and produces MgO (Magnesium oxide) and Al (Aluminium) as products. Here Al is replaced by Mg. Reaction is
Mg + Al₂O₃ → MgO + Al

To balance the reaction equation, both left and right hand sides should have same number of atoms in each element.
Here,
Left Hand Side has Right Hand Side has
Mg = 1 atom Mg = 1 atom
Al = 2 atom Al = 1 atom
O = 3 atom O = 1 atom

First step : balance the O atoms in both sides. To do that "3" should be added before MgO.

Second step : After balancing O atoms, there will be 3 Mg atoms in right hand side. Hence to balance Mg atoms again "3" should be added before Mg in left hand side

Third step : as the final step balance the Al atoms by adding "2" before Al in the right hand side.

Then final balanced equation should be
3Mg + Al₂O₃ → 3MgO + 2Al

4 0

2 years ago

Read 2 more answers

Our blood which is made up of different types of cells is classified as what level of organization? *

beks73 [17]

Answer:

c.tissue

Explanation:

7 0

2 years ago

Read 2 more answers

3g of clean mg ribbon and 8g of clean copper metal was burnt separately in equal volume of air and both mass reacted completely

dsp73

Answer:

gshshs

Explanation:

bshsjskskehhshs

5 0

2 years ago

Calculate the percent by mass of a solution of Ca(NO3)2 that has 22.63 g dissolved in 896.92 g of water.

never [62]

Hey there!

To calculate the percent by mass of the Ca(NO₃)₂ we need to find the total mass first by adding.

896.92 + 22.63 = 919.55

In total, the solution is 919.55 grams.

To find the percent of Ca(NO₃)₂ in the solution, divide the mass of Ca(NO₃)₂ by the total mass and multiply by 100.

22.63 ÷ 919.55 = 0.0246

0.0246 x 100 = 2.46

Ca(NO₃)₂ makes up 2.46% of the solution.

Hope this helps!

6 0

3 years ago

What type of bond is this combination likely to form

kari74 [83]

Answer:

A combination is certainly possible, but you should not take formal charges so literally

Normally, when a covalent bond is found, the two atoms both bring in one electron. As you identify correctly, in the case of nitric acid that would not be possible completely. If you draw the different possible resonance structures, the most likely structure has a single bond between the nitrogen and an oxygen where the oxygen has 3 lone pairs and both electrons in the bond are donated by the nitrogen. This makes the nitrogen "positive" and that oxygen "negative", but in fact the electrons move more freely in the molecule and charges are more distributed. You will not be able to find "the negatively charged" oxygen atom.

Explanation:

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4 0

3 years ago