1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
BaLLatris [955]
3 years ago
15

Which pair of elements is in the same period? (Check ALL that apply) *

Chemistry
1 answer:
stira [4]3 years ago
3 0

Answer:

D and R are in the same period

Explanation:

remember groups are vertical and periods are horizontal!

You might be interested in
(b) Suggest why passing water through the filter is an important step in the home water
Snezhnost [94]

Explanation:

Water filtration is the process of removing or reducing the concentration of particulate matter, including suspended particles, parasites, bacteria, algae, viruses, and fungi, as well as other undesirable chemical and biological contaminants from contaminated water to produce safe and clean water for a specific purpose ...

5 0
3 years ago
A container of compressed hydrogen with a fixed volume has a pressure of 13.0 atm at a temperature of 20.0 °C. If its temperatur
nevsk [136]

Answer:

P₂ = 16.6 atm

Explanation:

Given data:

Initial pressure = 13.0 atm

Initial temperature = 20.0°C (20+273 = 293 K)

Final temperature = 102.0°C (102+273 =375 K)

Final pressure = ?

Solution:

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

Now we will put the values in formula:

13.0 atm / 293 K =  P₂/375 K

P₂ = 13.0 atm × 375 K / 293 K

P₂ = 4875 atm. K /293 K

P₂ = 16.6 atm

8 0
3 years ago
A local water quality standard for a particular metal is 100 ppm. Which of the following describes what 100 ppm means?
Alborosie
Do this has extra pictures/examples so I can help?
6 0
4 years ago
I NEED HELP PLSS ASAP!!
goblinko [34]

Answer:

The answer is not with me sry lol.

Explanation:

5 0
4 years ago
A 3.00 L flexible container holds a sample of hydrogen gas at 153 kPa. If the pressure increases to 203 kPa and the temperature
dybincka [34]

To solve this we assume that the gas is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant temperature and number of moles of the gas the product of PV is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

 

P1V1 =P2V2

V2 = P1 V1 / P2

V2 = 153 x 3.00 / 203

<span>V2 = 2.26 L</span>

3 0
3 years ago
Other questions:
  • How to balance barium and oxygen yield barium oxide
    12·1 answer
  • What is the oxidation number of Pb(NO3)2​
    10·2 answers
  • What is the actual free energy change for a reaction at 298k and ph7 given the concentrations of each reactant?
    13·1 answer
  • Is metal getting warmer a physical or chemical change
    9·2 answers
  • _Ca + _H20 --&gt; _Ca(OH)2 + _H2
    12·1 answer
  • A measurement of the amount of solute that is dissolved in a given quantity of solvent; usually expressed as mol/L.
    13·1 answer
  • A sample of helium has a volume of 3.49 L at 741 mmHg. What would be the volume if the pressure
    6·1 answer
  • Which of the following does not describe a physical property of iron?
    11·1 answer
  • What is the dependent variable in the experiment shown​
    7·2 answers
  • Which list of terms best describes the formation of sedimentary rocks
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!