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jek_recluse [69]
3 years ago
11

Which is the molar mass of BF3?

Chemistry
1 answer:
Eduardwww [97]3 years ago
3 0
The answer is 67.82 g/mol
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Cómo se formulan los hidroxidos?
uysha [10]

Answer:

es esto OH−

Explanation:

el hidróxido es hidrógeno unido covalentemente al oxígeno. Es un anión y tiene carga negativa.

6 0
3 years ago
Look at the potential energy diagram for a chemical reaction.
vladimir1956 [14]

Answer: The activation energy is 10 kJ and the reaction is exothermic.

Explanation: Exothermic reactions are those in which heat is released and thus the energy of products is less than the energy of reactants.

Endothermic reactions are those in which heat is absorbed and thus the energy of products is more than the energy of reactants.

Activation energy is the extra amount of energy required by the reactants to cross the energy barrier to convert to products.

Given : Energy of reactants = 40kJ

Energy of activation: (50-40)=10 kJ

Energy of products = 50 kJ

Energy of products = 15 kJ

Thus Energy of products (15kJ) < Energy of reactants(40kJ), the reaction is exothermic as energy has been lost to surroundings in the form of heat.

8 0
3 years ago
100 points plus i'll mark brainliest
sdas [7]
I think the answer is 98 grams
5 0
3 years ago
The number of moles in 2.93 g of Li2O in corrext sig figs​
jekas [21]

Answer:

0.1 mol

Explanation:

Number of mole= mass/molar mass

lithium have a mass number of 7 and oxygen have a mass number of 16.

so, (7x2) + 16

= 30

therefore, number of moles = 2.93/30

= 0.10

4 0
3 years ago
Read 2 more answers
A cyclist rode at an average speed of 10 mph for 15 miles. How long was the ride?
xxMikexx [17]
If the cyclist rode at an average speed of 10mph for 15 miles...

we can solve by dividing the distance by the speed to get time using the equation...

Δspeed = Δdistance / Δtime

Δtime = Δdistance / Δspeed

Δtime = 15 miles / 10 mph = 1.5 hours
7 0
3 years ago
Read 2 more answers
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