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nikklg [1K]
3 years ago
13

1. Take a look at all the elements in period 3. What do you notice? *

Chemistry
2 answers:
Vedmedyk [2.9K]3 years ago
5 0

Answer:

D

Explanation:

beacause all the elements in period 3 has different valence electrons hence you look at the first element in period 3 is sodium which has a valence electron of 1 when you go across the period to the right their valence electron decreases to be negative

Lelu [443]3 years ago
4 0

Answer:

D is the correct answer i hope this is correct

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Help me pls Idk the answers
gayaneshka [121]
I’m very sorry but I don’t know how to answer that question.
5 0
3 years ago
Read 2 more answers
At standard ambient temperature and pressure (SATP), a gas has density of 1.5328g/L. What is the molar mass of the gas?
ahrayia [7]

The standard ambient temperature and pressure are

Temperature =298 K

Pressure = 1atm

The density of gas is 1.5328 g/L

density = mass of gas per unit volume

the ideal gas equation is

PV = nRT

P = pressure = 1 atm

V = volume

n = moles

R= gas constant = 0.0821 Latm/mol K

T = 298 K

moles = mass / molar mass

so we can write

n/V = density / molar mass

Putting values

Pressure=\frac{nRT}{V}=\frac{massXRT}{VXmolarmass}

Pressure=\frac{densityXRT}{molarmass}

molarmass=\frac{densityXRT}{Pressure}=\frac{1.5328X0.0821X298}{1}=37.50

Thus molar mass of gas is 37.50g/mol

6 0
3 years ago
An -ate or -ite at the end of a compound name ususally indiates that the compound contains...
Zarrin [17]

Answer: Oxygen.

Explanation: The -ate is used for the ion that has the largest number of Oxygen atoms. The -ite would be used for the ion with the smaller amount of oxygen atoms.

4 0
3 years ago
The revival of jansenism, which centered on miracles that allegedly happened at the grave of a jansenist priest, is evidence of
lapo4ka [179]

The evidence of the revival of Jansenism is the desire of ordinary people to connect themselves to what they saw as the direct work of God.

<h3>What is Jansenism?</h3>

Jansenism is a theological movement that is done with the mixing of Catholicism. It was active in France's kingdom.

Primarily throughout the seventeenth and eighteenth centuries, Jansenism flourished inside Roman Catholicism before being denounced as heresy in 1653 by Pope Innocent X.

Thus, the yearning of common people to participate in what they perceived as God's direct action is proof of the rebirth of Jansenism.

To learn more about Jansenism, refer to the link:

brainly.com/question/14563019

#SPJ4

3 0
2 years ago
In an experiment, 2.54 grams of copper completely reacts with sulfur, producing 3.18 grams of copper(I). Determine the total mas
jeka57 [31]
3.18 grams of product (Cu I) - 2.54 grams of Cu (reactant) = .64 grams of Sulfur, by law of conservation of mass.
5 0
3 years ago
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