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Ivan
3 years ago
6

Poor thermal conductors. Poor electrical conductors. Brittle solids - not malleable or ductile. Little or no metallic luster. Ga

in electrons easily. This list describes a(n) ________________. Question 1 options: metal energy element metalloid non metal
Chemistry
1 answer:
bija089 [108]3 years ago
8 0
These characteristics describe a nonmetal.
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CaSO4 + AlBr3 > CaBr2 +Al2(SO4)3 What will the coefficient of CaBr2 when the equation is balanced using the smallest possible
Deffense [45]

Answer:

3 will be the correct coefficient of CaBr2

Explanation:

In balancing a chemical equation, numbers should be assigned to both reactants and products as a numerical coefficients until all atoms of elements in both sides of the equation count equal.

The balanced equation of the reaction will be:

3CaSO4 + 2AlBr3 ==> 3CaBr2 + Al2(SO4)3

Looking at the unbalanced equation in the question, in the product Al2(SO4)3 there are 3 SO4 group. This will warrant putting 3 behind CaSO4 in order to balance the atoms of SO4 group. That operation will automatically put the number of Ca atoms in CaSO4 to be 3 therefore making CaBr2 to have 3 coefficient as in the balanced equation. This is to balance the number of Ca atoms in both sides to be 3.

8 0
3 years ago
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When balancing a chemical equation can you adjust the number that is subscripted to a substance formula?
Ugo [173]
No, you can't do that
3 0
3 years ago
What occurs when the two solids are placed in contact with each other?
r-ruslan [8.4K]

Answer:

I think its heat flow or conduction

6 0
3 years ago
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Which of the following instruments is used during a titration? test tube beaker burette crucible
ololo11 [35]
I believe the correct answer would be the third option. It is the burette that is the apparatus that is used in titration. It is the best apparatus to use since you can easily control the amount you add to the sample solution. Also, you can easily read off the volume that was added.
4 0
3 years ago
how many grams of barium sulfate are produced if 10.0 grams of barium chloride are reacted is excess sulfuric acid​
kow [346]

Answer: 11.2 grams

Explanation:

The balanced chemical equation for reaction is:

BaCl_2+H_2SO_4\rightarrow BaSO_4+2HCl

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

a) moles of BaCl_2

\text{Number of moles}=\frac{10.0g}{208.23g/mol}=0.0480moles

According to stoichiometry :

As sulfuric acid​ is in excess , the limiting reagent is barium chloride as it limits the formation of product.

1 mole of BaCl_2 produces=  1 mole of BaSO_4

Thus 0.0480 moles of BaCl_2 require=\frac{1}{1}\times 0.0480=0.0480moles  of BaSO_4

Mass of BaSO_4=moles\times {\text {Molar mas}}=0.0480mol\times 233.38g/mol=11.2g

Thus 11.2 g of barium sulfate are produced if 10.0 grams of barium chloride are reacted is excess sulfuric acid​

7 0
3 years ago
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