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3 years ago

What types of objects are using electricity in your home today?

1 answer:

3 0

Lamp, tv, refrigerator, Lights, phone, microwave, surround sound, cameras, motion sensors, chandelier, pool, hot tub, heated floors, the smart home stuff, aquarium stuff, and whatever the staff uses.

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B. A reaction occurs between the vinegar and the alkaline sting. What is this reaction called?

alexandr402 [8]

It’s called neutralization. The alkali has neutralized the acid by taking away the H+ ions and then turning them into water.

8 0

3 years ago

Loren is examining a hair found at a crime scene. He notes radical changes in the coloring of the hair. What is the term for thi

nordsb [41]

Answer:

Granules of the hair cortex.

Explanation:

<h2>hope it helpfully...</h2>

4 0

3 years ago

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What is the molar mass for MgO?

podryga [215]

Answer:

40.3044 g/mol

Explanation:

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3 years ago

Determine the limiting reactant when 30.0 g of propane, C3H8, is burned with 75.0 g of oxygen.

AnnZ [28]

Answer: The limiting reagent is oxygen gas.

Explanation:

Limiting reagent is defined as the reactant that is present in less amount and it limits the formation of products.

Excess reagent is defined as the reactant which is present in large amount.

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

For propane:

Given mass of propane = 30.0 g

Molar mass of propane = 44.1 g/mol

Putting values in equation 1, we get:

$\text{Moles of propane}=\frac{30.0g}{44.1g/mol}=0.680mol$

For oxygen:

Given mass of oxygen = 75.0 g

Molar mass of oxygen = 32 g/mol

Putting values in equation 1, we get:

$\text{Moles of propane}=\frac{75.0g}{32g/mol}=2.34mol$

The chemical equation for the combustion of propane follows:

$C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(l)$

By Stoichiometry of the reaction:

5 moles of oxygen gas reacts with 1 mole of propane.

So, 2.34 moles of oxygen gas will react with = $\frac{1}{5}\times 2.34=0.468mol$ of propane

As, given amount of propane is more than the required amount. So, it is considered as an excess reagent.

Thus, oxygen is considered as a limiting reagent because it limits the formation of product.

Hence, the limiting reagent is oxygen gas.

3 0

3 years ago

What are the seven identified components of the electromagnetic spectrum?

NeTakaya

Answer:

The EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. The common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.

Explanation:

7 0

3 years ago

Read 2 more answers