Chemistry College

Atoms in the same GROUP have the same...

A . Size
B. Temperature
C. Number of energy levels
D. Reactivity

Answers

Answer 1

Answer:

reactivity

Explanation:

for example atoms in group 7 react by gaining 1 electron to become stable but they do not have the same number of energy levels

Related Questions

Please help me l don’t understand please !!!!!!

Answers

Answer: C

Explanation:

he never had evidence in the first place that was nearly enough.

For each of the environments below: (1) identify your system and surroundings and (2) predict whether it would be endothermic or exothermic.a.Wood burningSystem:Surroundings:Enthalpy Change:b.Water freezingSystem:Surroundings:Enthalpy Change:c.Sweat evaporatingSystem:Surroundings:Enthalpy Change:d.Chemical hand-warmerSystem:Surroundings:Enthalpy Change:

Answers

Answer:

A) Wood burning

system : Wood.

surroundings : atmosphere

Enthalpy : Exothermic

B) Water Freezing system

System : Refrigerator

surroundings :  water in the refrigerator

enthalpy change : Endothermic

C) Sweat evaporating

System :  Human being

surroundings : Air nearby

Enthalpy change : exothermic

D) Chemical Hand-warmer

system : Hand warmer pack

Surroundings : human palms

Enthalpy Change : Exothermic

Explanation:

A) Wood burning

system : Wood

surroundings : atmosphere

Enthalpy : Exothermic

This system give away energy to its surroundings hence its enthalpy change is exothermic

B) Water Freezing system

System : Refrigerator

surroundings :  water in the refrigerator

enthalpy change : Endothermic

The system absorbs heat from what is put inside(surroundings ) of it hence this is na endothermic system

C) Sweat evaporating

System :  Human being

surroundings : Air nearby

Enthalpy change : exothermic

This is an exothermic reaction ( enthalpy change ) because the system gives out heat to the surrounding

D) Chemical Hand-warmer

system : Hand warmer pack

Surroundings : human palms

Enthalpy Change : Exothermic

There is movement of heat from the system to the surrounding hence it is an exothermic reaction

Investigation Question: How do organisms get their genes?
THIS ANSWER SHOULD BE 3 OR MORE SENTENCES.

Answers

Answer:

from the chromosome..l dont know

Genetic information is passed from generation to generation through inherited units of chemical information (in most cases, genes). Organisms produce other similar organisms through sexual reproduction, which allows the line of genetic material to be maintained and generations to be linked.

Electricity is possible because atoms release and absorb which sub-atomic particle?

Answers

Answer:

Electrons

Electric charge is carried by subatomic particles such as electrons and protons, which can be created and destroyed. For example, when particles are destroyed, equal numbers of positive and negative charges are destroyed, keeping the net amount of charge unchanged.

A percent composition analysis yields
22.6% phosphorus (P) and 77.4%
chlorine (CI). What is the empirical
formula for the compound?
А
B
P2C17
PCI:

Answers

Answer:

PCl₃

Explanation:

To determine the empirical formula of a compound, we need to follow a series of steps.

Step 1: Divide each percent composition by the atomic mass of the element

P: 22.6/30.97 = 0.729

Cl: 77.4/35.45 = 2.18

Step 2: Divide all the numbers by the smallest one, i.e. 0.729

P: 0.729/0.729 = 1

Cl: 2.18/0.729 ≈ 3

The empirical formula of the compound is PCl₃.

LEVEL 3
Write the correct order
of letters to the finish line.
A E B E C
Example:
ABCGH
G
H
N
eza


Not correct

Answers

ANSWER - AEGHNZ (is that right?
look this is on quizlet

how is acid different from base​

Answers

Hehsnsgx d she. Wayy buy is s
As

#7 which of the following decreases the rate of solubility of solid molecules in a solution?

Answers

Answer:

7. Option D

Explanation:

Solubility increases with the increase in temperature of the solution. It is so because the increase in temperature leads to increase in kinetic energy which then breaks the solute particles held together by intermolecular attractions.

Hence, option D is correct

Identify the Lewis acid in this balanced equation: SnCl4 + 2Cl− → SnCl62−

Answers

Answer:

The answer is SnCI4.

Explanation:

Answer:

it is a

cause it is and cause i'm right

Other Questions
Please answer LIKE PLEASEEEEEEE The Title of Betty Friedan's book suggests that______.A. women like to be seen as sex goddessesB. what women experience is a mystery that baffles the rest of societyC. women have an air of mystery that attracts menD. she knows what feminine really means discuss your favorite piece of Christian art, music, or a movie. Which method would be the most efficient way to solve the method : substitution method, Eliminating method or equal value 3x+y=1 4x+y=2 For each of the environments below: (1) identify your system and surroundings and (2) predict whether it would be endothermic or exothermic.a.Wood burningSystem:Surroundings:Enthalpy Change:b.Water freezingSystem:Surroundings:Enthalpy Change:c.Sweat evaporatingSystem:Surroundings:Enthalpy Change:d.Chemical hand-warmerSystem:Surroundings:Enthalpy Change: Which was an advantage held by the South over the North at the start of the Civil War?Question 4 options:It had far more extensive network of railroads and telegraph linesIt had an industrial economy with limitless immigrant labor to produce weapons.Its population of enslaved people were willing to fight to preserve the plantation system.Its soldiers and generals believed they were protecting their homes and way of life. How did the underwater volcano form? Can you solve the inequalities 9.50(70+x)1000 LEVEL 3Write the correct orderof letters to the finish line.A E B E CExample:ABCGHGHNezaNot correct Find the slope of the line. Will give brainiest if correct. 85% of x is 51. Write an equation that represents the situation. Yea.....can sum1 help pls How do animals help recycle carbon atoms? please help me asap. NO LINKS I WILL REPORT YOU!!!!the galvanometer is not measuring any electricity despite all wires being hooked up. Why could this be? Convert the DNA strand to mRna, then use the codon chart to translate the codons into amino acids.DNA TAC CAT GGA ATT ACT mRNA Amino acids I NEED HELP PLEASE RS= 4y+2, ST = 3y+8, and RT = 38 what is the value of y Blackie, a cat whose mass is 6-kg, is napping on top of the refrigerator when he rolls over and fall. Blackie has a KE of 90-J just before he lands on his feet on the floor.How tall is the refrigerator? Use the scatter plot of car resale values to answer the following question.A graph titled Car Resale Values has age of car on the x-axis, from 0 to 10 in increments of 2, and percentage of sticker price on the y-axis, for 0 to 100. A line of best fit goes through points (2, 80) and (9, 20).What can you say about the correlation between the age of a car and its resale value?a.The trend line slopes downward from upper left to lower right, so there is a negative correlation between a cars age and its resale value.b.The trend line slopes downward from upper left to lower right, so there is a positive correlation between a cars age and its resale value.c.The trend line slopes upward from lower right to upper left, so there is a positive correlation between a cars age and its resale value.d.There is no correlation between a cars age and its resale value.Please select the best answer from the choices providedABCD Hace un ao compr unos patines pero nunca ________ uso porque trabajo demasiado. a las b la c lo d los Solve the system using a matrix,3x 2y = 26x - 5y = -1