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Bas_tet [7]
3 years ago
11

What is the periodic table of element

Chemistry
1 answer:
Sauron [17]3 years ago
6 0
Its basically a chart with all the known elements on it. The elements are organized by period and group. Period and group are determined by the number of protons and electrons an atome has.
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What does an electron and neutron have in common
krok68 [10]
<span>They have the same mass and are both located in the nucleus of the atom.</span>
4 0
3 years ago
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Determine which equations you would use to solve the following problem: Calculate the amount of heat needed to change 20.0 g of
Inessa [10]

Answer:

Q = 4019.4 J

Explanation:

Given data:

Mass of ice = 20.0 g

Initial temperature = -10°C

Final temperature = 89.0°C

Amount of heat required = ?

Solution:

specific heat capacity of ice is 2.03 J/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1

ΔT =  89.0°C - (-10°C)

ΔT = 99°C

Q = 20.0 g ×2.03 J/g.°C × 99°C

Q = 4019.4 J

3 0
3 years ago
What is the mass (grams) of 9.89 * 10^24 moles of (cho30h)?
vladimir2022 [97]

43 grams of moles cho30h

3 0
3 years ago
A vector always consists of
bija089 [108]
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7 0
3 years ago
The conversion of acetyl chloride to methyl acetate occurs via the following two-step mechanism: Reaction sequence of acetyl chl
Svetlanka [38]

If the concentration of acetyl chloride  is increased ten times the rate of reaction is increased ten times.

The conversion of acetyl chloride to methyl acetate is a substitution reaction. Recall that a substitution reaction is one in which a moiety in a molecule is replaced by another.

In this reaction, the CH3O- ion replaces the chloride ion. In the first step, the CH3O- ion attacks the substrate in a slow step. This creates a tetrahedral intermediate. Loss of the chloride ion yields the  methyl acetate product.

The rate determining step is the formation of the tetrahedral intermediate. Since the reaction is first order in the acetyl chloride, if its concentration is increased ten times the rate of reaction is increased ten times.

Learn more: brainly.com/question/5624100

4 0
2 years ago
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