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tester [92]
3 years ago
7

There are three bulbs powered by a battery. What will happen if the middle light burns out.

Chemistry
2 answers:
torisob [31]3 years ago
8 0
A that’s the answer I’m not really 100% sure.
yarga [219]3 years ago
6 0
Answer:



A. The two other light bulbs will go out


If the one in the middle goes out, it will also cut the lights in the last bulb
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Determine the heat of reaction (ΔHrxn) for the reaction of calcium carbonate (CaCO3) with HCl to produce CO2 by using heat of fo
andrey2020 [161]

Answer: The heat of reaction (ΔHrxn) for the reaction is -164.9kJ

Explanation:

The given balanced chemical reaction is,

CaCO_3(s)+2HCl(g)\rightarrow CaCl_2(s)+CO_2(g)+H_2O(g)

To calculate the enthalpy of reaction (\Delta H^o).

\Delta H^o=H_f_{product}-H_f_{reactant}

\Delta H^o=[n_{CaCl_2}\times \Delta H_f^0_{(CaCl_2)}+n_{CO_2}\times \Delta H_f^0_{(CO_2)}+n_{H_2O}\times \Delta H_f^0_{(H_2O)}]-[n_{CaCO_3}\times \Delta H_f^0_{(CaCO_3)+n_{HCl}\times \Delta H_f^0_{(HCl)}]

where,

\Delta H^o_f_{(CaCO_3(s))}=-1206.9kJ/mol\\\Delta H^o_f_{(HCl(g))}=-92.30kJ/mol\\\Delta H^o_f_{(CaCl_2(s))}=-877.1kJ/mol\\\Delta H^o_f_{(H_2O(g))}=-285.8kJ/mol\\\Delta H^o_f_{(CO_2(g))}=-393.51kJ/mol

Putting values in above equation, we get:

\Delta H^o_{rxn}=[(1\times -877.1)+(1\times -393.51)+(1\times -285.8)]-[(1\times -1206.9)+(2\times -92.30)]=-164.9kJ

Therefore the heat of reaction (ΔHrxn) for the reaction is -164.9kJ

6 0
3 years ago
Why is it good for animals to decompose in the soil of living plants
xeze [42]
Because it helps enriches the soil, just like when you make home made compost you add egg shells and old veggies and stuff all the vitamins enriches the compost.

Hope this helped.
4 0
4 years ago
A 11.630 g milk chocolate bar is found to contain 7.815 g of sugar.How many milligrams of sugar does the milk chocolate bar cont
zzz [600]
3.815 that's the awnser......................................




4 0
3 years ago
Read 2 more answers
Complete and balance the following:(b) Sb₂O₃(s) + NaOH(aq) →
sammy [17]

Sodium tritioantimonate(III) and water are the products of the reaction between antimony(III) oxide and sodium hydroxide.

Sb2O3(s)+NaOH(aq)→Na3SbO3(aq)+H2O(l)

Balance the reaction from antimony, sodium, then hydrogen and oxygen.

Sb2O3(s)+6NaOH(aq)→2Na3SbO3(aq)+3H2O(l)

The equation is already balanced.

When each element in a chemical reaction has the same number of atoms and total charge on both the reactants and product sides of the equation, the reaction is said to be balanced. In other words, both sides of the reaction have an equal mass and charge of the components.

Because a chemical reaction is simply an arrangement of the atoms of the supplied elements, a chemical equation must be balanced. For the law of conservation of mass to be followed, the chemical equation must be balanced.

Learn more about chemical reaction  here:

brainly.com/question/3461108

#SPJ4

3 0
1 year ago
How many moles of gold are Cleveland to 1.204×1024 atoms
Whitepunk [10]

Answer:

10

Explanation:

ye

4 0
3 years ago
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