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4 years ago

5

Why are allergic reactions often

1 answer:

Setler79 [48]4 years ago

7 0

Allergic reactions (hypersensitivity reactions) are inappropriate responses of the immune system to a normally harmless substance

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Fill in the coefficients that will balance the following reaction:

dalvyx [7]

Answer:

C₃H₈₍g₎ + 5O₂₍g₎→ 3CO₂₍g₎ + 4H₂O₍l₎

Explanation:

Propane is an alkane that burns in enough oxygen to produce carbon (iv) Oxide and heat as the only by products. Balancing the equation: The number of atoms of each kind on either side should be equal. Hydrogen on the left has eight atoms same as the right side after balancing, oxygen has 10 while carbon has 3 on each side.

6 0

3 years ago

Read 2 more answers

A voltaic cell is constructed in which the anode is a Fe|Fe2 half cell and the cathode is a Cd|Cd2 half cell. The half-cell comp

Svetradugi [14.3K]

Answer: The Anode reaction is $Fe(s)\rightarrow Fe^{2+}(aq)+2e^-$

Explanation:

Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.

Oxidation reaction is defined as the reaction in which a substance looses its electrons.Oxidation occurs at anode.

Anode : $Fe(s)\rightarrow Fe^{2+}(aq)+2e^-$

Reduction reaction is defined as the reaction in which a substance gains electrons. Reduction occurs at cathode.

Cathode : $Cd^{2+}(aq)+2e^-\rightarrow Cd(s)$

3 0

3 years ago

with strong heating calcium carbonate undergoes thermal decomposition how many mole of CaCO3 are there in 50g of calcium carbona

aev [14]

Ca=40
C=12
O=16
1 mole of CaCO3 has 100 grams
So 50 grams is 0.5 mole

6 0

2 years ago

Read 2 more answers

How many atoms are in a 4.67 g sample of silicon?

Akimi4 [234]

Answer: 3.62 that's your answer! Please mark me as brainlyest!?

Explanation:

4 0

3 years ago

Which metal ion was green when placed in the fire?

Debora [2.8K]

Answer:

Barium Ba2+

Explanation:

Potassium lilac

Calcium orange red

Copeer blue green

3 0

3 years ago