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
vredina [299]
3 years ago
7

The three major groups on the peridoic table are the ____

Chemistry
1 answer:
qaws [65]3 years ago
5 0
Metals on the left side, metalloids on the staircase, nonmetals on right side
You might be interested in
If nitrogen-13 has a half life of 2.5 years, how much remains from a 100g sample after 7.5 years
Sonbull [250]

Answer:

12.50g

Explanation:

T½ = 2.5years

No = 100g

N = ?

Time (T) = 7.5 years

To solve this question, we'll have to find the disintegration constant λ first

T½ = In2 / λ

T½ = 0.693 / λ

λ = 0.693 / 2.5

λ = 0.2772

In(N/No) = -λt

N = No* e^-λt

N = 100 * e^-(0.2772*7.5)

N = 100*e^-2.079

N = 100 * 0.125

N = 12.50g

The sample remaining after 7.5 years is 12.50g

5 0
3 years ago
Plz help im begging
vladimir2022 [97]

Answer:

A. glass and diamond

Explanation:

7 0
3 years ago
Calculate the mass, in grams, of Ag2CrO4 that will precipitate when 50.0mL of 0.20M AgNO3 solution is mixed with 40.0mL of 0.10M
Darina [25.2K]

Answer:

1.327 g Ag₂CrO₄

Explanation:

The reaction that takes place is:

  • 2AgNO₃(aq) + K₂CrO₄(aq)  → Ag₂CrO₄(s) + 2KNO₃(aq)

First we need to <em>identify the limiting reactant</em>:

We have:

  • 0.20 M * 50.0 mL = 10 mmol of AgNO₃
  • 0.10 M * 40.0 mL = 4 mmol of K₂CrO₄

If 4 mmol of K₂CrO₄ were to react completely, it would require (4*2) 8 mmol of AgNO₃. There's more than 8 mmol of AgNO₃ so AgNO₃ is the excess reactant. <em><u>That makes K₂CrO₄ the limiting reactant</u></em>.

Now we <u>calculate the mass of Ag₂CrO₄ formed</u>, using the <em>limiting reactant</em>:

  • 4 mmol K₂CrO₄ * \frac{1mmolAg_2CrO_4}{1mmolK_2CrO_4} *\frac{331.73mg}{1mmolAg_2CrO_4} = 1326.92 mg Ag₂CrO₄
  • 1326.92 mg / 1000 = 1.327 g Ag₂CrO₄
7 0
2 years ago
How many molecules are in one mole of a compound?
valentina_108 [34]

Answer:6.022 x 10^23 molecules

Explanation: Since one mole of any chemical compound always contains 6.022 x 10^23 molecules, you can calculate the number of molecules of any substance if you know its mass and its chemical formula.

3 0
3 years ago
*
Natasha_Volkova [10]

to be honestl id ldm

4 0
2 years ago
Other questions:
  • Mass of a substance divided by unit volume is called
    11·1 answer
  • How much energy does an electric hair dryer use if it draws 8.3 amps of current when using 120 volts for 5.0 minutes?
    12·2 answers
  • Show how acid and base give below dissociates in water <br>HNO3​
    13·1 answer
  • Why thre is no atmosphere in moom,?
    13·1 answer
  • What is national flower of nepal?
    5·1 answer
  • An acid with molar mass 84.48 g/mol is titrated with 0.650 M KOH. What volume of KOH solution is needed to titrate 1.70 grams of
    13·1 answer
  • Q1 - How would you balance the following equation: N₂ + O₂ N₂O₅
    11·1 answer
  • 1. Which list of nuclear emissions is arranged in order from the least penetrating power to
    13·1 answer
  • Determine the ground-state electron configuration for each of the following elements: A. chlorine ______________________________
    13·1 answer
  • A graduated cylinder was filled to 20.3 mL with water. A solid object weighing 73.05 g was immersed in the water, raising the me
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!