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Elza [17]
3 years ago
7

In periodic table, valance electrons are indicated by​

Chemistry
1 answer:
inn [45]3 years ago
6 0
Valence electrons of elements except the transition elements – the main group elements. While the period number indicates the number of shells, the group number indicates the number of valence electrons in the outermost shell. Specifically, the number in the ones' place. It can never be replaced rarely anyways.
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2.50 L of gas originally at 50 K is warmed to 80 K. If the pressure remains constant, which gas law needs to be used to find the
Brilliant_brown [7]

Answer:

A

Explanation:

You want an equation that includes both V and T. Charles' Law states that V =kT or V₁/T₁ = V₂/T₂, so this is the best formula to use.

B: The Combined Gas Law is p₁V₁/T₂ = p₂V₂/T₂ will work, but it's overkill for the situation. You can assume any constant value for the pressure, and it will cancel from each side of the equation,

C is wrong. Boyle's Law is p₁V₁ = p₂V₂. It does not include the temperature.

D is wrong. Gay-Lussac's Law is p₁/T₂ = p₂/T₂. It does not include the volume.

7 0
3 years ago
PLS HELP!!! Science
Gekata [30.6K]
The answer would be
C) To reduce destruction by providing early warning of severe weather

This can help us because then we can plan our day-to-day activities better and can definitely help keep us out of danger.

7 0
3 years ago
What is a substance's melting point?
TEA [102]

A melting point of a substance is a point at which the sample or substance start converting in liquid. For most substances, melting and freezing points are approximately equal. For example, the melting point and freezing point of mercury is 234.32 kelvins (−38.83 °C or −37.89 °F). Hope this helped!! :)

5 0
3 years ago
Read 2 more answers
In a controlled scientific experiment, a scientist A. alters one test variable (independent variable) and observes the effects o
Lubov Fominskaja [6]

Answer:

C )

Explanation:

Controlled scientific experiment tests scientific assumption (hypothesis), under controlled conditions.

In controlled scientific experiment, alters the test variable (independent variable) and observes the effects on the outcome variable (dependent variable).

Eg : Studying impact of sunlight on plant's group, where former independent variable is altered & its effects on dependent outcome variable is observed.

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3 years ago
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3241004551 [841]

Answer:

alpha particles

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sana po makatulong

#keeponlearning

#Godbless

4 0
2 years ago
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