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2 years ago

Explain why the place of aluminum in the reactivity wagon seems to be unsuitable.

Chemistry

1 answer:

Step2247 [10]2 years ago

5 0

Answer:

Acids react with most metals.

When an acid reacts with a metal, the products are a salt and hydrogen.

This is the general word equation for the reaction: metal + acid → salt + hydrogen

Explanation:

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How are viscosity and flow rate similar

Stels [109]

Answer: Flow rate is inversely proportional to viscosity.

Explanation: The relation is called Poiseuille's law, which describes the smooth flow of a fluid along a tube.

7 0

3 years ago

Read 2 more answers

If 4520 kj of heat is needed to boil a sample of water, what is the mass of water

Cerrena [4.2K]

Answer:

1,085g of water

Explanation:

If we have the value 4520kj is because the question is related to Energy and heat capacity. In this case, the law and equation that we use is the following:

Q= m*C*Δt where;

Q in the heat, in this case: 4520kj

m is the mas

Δt= is the difference between final-initial temperature (change of temperature), in this exercise we don´t have temperatura change.

In order to determine the mass, I will have the same equation but finding m

m= Q/C*Δt without m=Q/C

So: m= 4,520J/4.18J/g°C

m= 1,0813 g

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3 years ago

How many miles are there in 20g of KClO3 (k=39 Cl=35.5 O=16)

SashulF [63]

<h3>Answer:</h3>

0.144 moles

<h3>Explanation:</h3>

The relationship between mass of a compound, number of moles and molar mass of the compound is given by;
Number of moles = Mass ÷ Molar mass
Molar mass is equivalent to the relative formula mass of the compound that is calculated the atomic masses of the elements making the compound.

In this case;

Our compound, KClO3 will have a molar mass of;

= 39 + 35.5 + 4(16)

= 138.5 g/mol

Mass of KClO3 is 20 g

Therefore;

Number of moles = 20 g ÷ 138.5 g/mol

= 0.144 moles

Thus, the number of moles in 20 g of KClO3 is 0.144 moles

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3 years ago

An amphoteric species is neither an acid nor a base. True or False

umka2103 [35]

Answer: False

Explanation: just took on edge

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3 years ago

I need help please!!! Name the parts making up the female part of the flower and state what each part does. Please use your own

Greeley [361]

<h2>Answer:-</h2>

The female part is the pistil. The pistil usually is located in the center of the flower and is made up of three parts: the stigma, style, and ovary. The stigma is the sticky knob at the top of the pistil. It is attached to the long, tubelike structure called the style.

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2 years ago