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Alenkasestr [34]
4 years ago
12

You are attempting to identify two mystery metals. Explain what different properties would be helpful in identifying them and ho

w they would Aid in identification of the metals.
Chemistry
2 answers:
kirill [66]4 years ago
8 0
The hardness, and luster of a metal can determine the indentification.
Valentin [98]4 years ago
3 0

Answer:

The Hardness of the Metal

Explanation:

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The theory of evolution
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2 years ago
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The rate of a chemical reaction is related to:_______
aalyn [17]

The correct answer for this question is activation energy, orientation, and frequency.

The rate of a chemical reaction is directly related to its activation energy because the higher the activation energy the lower is the rate of reaction as we know the reaction only proceed when the reactants have absorbed the enough heat energy to reach the transition state. Thus activation energy determines the rate of reaction.

The orientation of the particles is also very important as we know that the reaction between the two reactants only occur when they collide with proper orientation in time the greater the probability of the collision the greater is the rate of reaction and also the number of collisions also determines the rate of reaction.

The frequency is directly proportional to the rate of chemical reaction as the frequency of the collision increases the rate of the chemical reaction also increases.

To know more about the factors effecting rate of chemical reaction click here:

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8 0
2 years ago
When was copper discovered?​
Vesna [10]

Answer:

9000 BC

Explanation:

Although various copper tools and decorative items dating back as early as 9000 BCE have been discovered, archaeological evidence suggests that it was the early Mesopotamians who, around 5000 to 6000 years ago, were the first to fully harness the ability to extract and work with copper.

3 0
3 years ago
Element X
dedylja [7]
Element x is Silicon
7 0
3 years ago
What is the volume of 1.56 kg of a compound whose molar mass is 81.86 g/mole and whose density is 41.2 g/ml?
hjlf

Answer:

v = 37.9 ml

Explanation:

Given data:

Mass of compound = 1.56 kg

Density = 41.2 g/ml

Volume of compound = ?

Solution:

First of all we will convert the mass into g.

1.56 ×1000 = 1560 g

Formula:

D=m/v

D= density

m=mass

V=volume

v = m/d

v =  1560 g / 41.2 g/ml

v = 37.9 ml

7 0
3 years ago
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