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
astra-53 [7]
3 years ago
10

Can someone pleasee help me with this asap!! Im struggling

Chemistry
1 answer:
Alex777 [14]3 years ago
5 0

4a. D - The last number in the configuration represents the group, in this case 3, and the number of shells represent the period, which is also 3.

4bi. Rubidium metal reacts very rapidly with water to form a colourless solution of rubidium hydroxide (RbOH) and hydrogen gas (H2). The resulting solution is basic because of the dissolved hydroxide. The reaction is very exothermic and explosive.

4bii. Lithium is smaller in size than potassium . so valence electrons are more tightly held in Li than K. Due to larger size of K the valence electrons are loosely held and easy to remove the electron from K. Hence K is more reactive.

You might be interested in
How much heat is required to convert 0.3 kilograms of ice at 0°C to water at the same temperature?
grin007 [14]
It is C honestly I just looked it up lollllll but I know it's right
6 0
3 years ago
What is the concentration, in mol/L of an HCl solution if 22.86 mL reacts completely with (neutralizes) 29.64 mL of a 0.1037 M s
insens350 [35]
Ask if something is not clear
6 0
3 years ago
Water’s molar mass is 18.01 g/mol. The molar mass of glycerol is 92.09 g/mol. At 25°C, glycerol is more viscous than water. Whic
amid [387]

Answer:

glycerol because it is more viscous and has a larger molar mass than water.

Explanation:

Viscosity depends on inter-molecular interactions.

The predominant inter-molecular force in water and glycerol is hydrogen bonding.

Hydrogen bond is an electrostatic attraction between two polar groups in which one group has hydrogen atom (H) and another group has highly electronegative atom such as nitrogen (like in this molecule), oxygen (O) or fluorine (F).

5 0
3 years ago
Read 2 more answers
What is the special state of matter that exist last at extremely high temperatures?
pickupchik [31]
Hey there!
Usually what's taught in school is this.
Solid- Particles packed, little energy.
Liquid- Particles less packed, more energy.
Gas- High energy in particles, less particle restriction, very spread out.
But here's the extra thing,
Plasma- Examples are things like fire and lightning. Very, very, high energy.
Hopefully this helps!
8 0
4 years ago
When writing a PSA, it is not necessary to brainstorm because you already have all of the information from your persuasive essay
Sergio [31]
YES it is very important to brainstorm
8 0
3 years ago
Other questions:
  • How long do balloons stay inflated with helium
    7·1 answer
  • James has a very detailed model of the solar system where each planet is made out of granite rock. Since his little sister reall
    14·1 answer
  • How many grams of propane (c3h8) are required to produce 39.4g of water
    12·1 answer
  • What is pH?
    9·1 answer
  • You weigh a 24K gold chain and find that it weighs 400 grams. Determine home many moles of gold atoms you have
    7·1 answer
  • Why doesn’t a stable ecosystem have more tertiary consumers than primary consumers?
    5·1 answer
  • What volume of air at 25°C and 1.00 atm can he stored in a 10.0 L high-pressure air tank if compressed to 25°C and 175 atm?
    10·1 answer
  • Write equations showing how each of the following weak bases ionizes water to form OH-.a.) CO3^2-. Express your answer as a chem
    9·1 answer
  • What do cubic measurements, live cm3, mesure?"<br> O length<br> volume
    6·1 answer
  • How many mL 18.0 M H₂SO4 is needed to make 1.50 L of 0.120 M H₂SO4?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!