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
cricket20 [7]
2 years ago
9

PLEASE HELPPP ASAPPPP!!!!

Chemistry
1 answer:
DedPeter [7]2 years ago
3 0

Answer:

See below

Explanation:

From periodic table:

228     Ra

    88                             radium

You might be interested in
Question 4
vazorg [7]

Answer:

H(aq) + NO3 (aq) + HF(aq)

Explanation:

In the given mixture of HNO3 (Nitric Acid) and HF (hydrofluoric acid) in water  the major species present are H(aq) + NO3 (aq) + HF(aq).

On the reaction of  HNO3 (Nitric Acid) and HF (hydrofluoric acid) in water  , it will give a polar solution and will form a homogenous mixture.

Hence, the correct answer is "H(aq) + NO3 (aq) + HF(aq)".

4 0
3 years ago
What animal is most like to harmed when a beaver builds a dam​
siniylev [52]

Answer:

Small fish or insects.

Explanation:

3 0
3 years ago
Read 2 more answers
Give 7 and example of how each wave in the EM spectrum in used in our daily lives
bogdanovich [222]
1. it’s use for our food in like microwaves and ovens
2. airplanes are guided by radar waves,
3.the tv is used by electromagnetic waves
4. they are used in heaters,
5.infrared cameras which detect people in the dark
6.Allows airport security to observe the internal contents of objects and luggage using airport scanners
7.doctors use electromagnetic waves in x-rays
8 0
3 years ago
Name the homologous series for this compound and show its structure<br>ch3ch2cc(ch2)2ch3​
kotykmax [81]

Answer:

Alkyne

Explanation:

The homologous series for this compound is the Alkyne because of the presence of the triple bond present between the third and fourth carbon atoms as seen in the picture attached.

5 0
2 years ago
For the following reaction, 22.0 grams of nitrogen monoxide are allowed to react with 5.80 grams of hydrogen gas . nitrogen mono
mash [69]

NO is the limiting reagent and 4.34 g is the amount of the excess reagent that remains after the reaction is complete

<h3>What is a limiting reagent?</h3>

The reactant that is entirely used up in a reaction is called as limiting reagent.

The reaction:

2NO(g) +2H_2(g) → N_2 +2H_2O

Moles of nitrogen monoxide

Molecular weight: M_(_N_O_)=30g/mol

n_(_N_O_) =\frac{mass}{molar \;mass}

n_(_N_O_) =\frac{22.0}{30g/mol}

n_(_N_O_) = 0.73 mol

Moles of hydrogen

Molecular weight: M_(_H_2_)=30g/mol

n_(_H_2_) =\frac{mass}{molar \;mass}

n_(_H_2_) =\frac{5.80g}{2g/mol}

n_(_H_2_) = 2.9 mol

Hydrogen gas is in excess.

NO is the limiting reagent.

The amount of the excess reagent remains after the reaction is complete.

n_(_N_2_) = (2.9 mol- 0.73 mol NO x \frac{1 \;mol \;of \;H_2}{2 \;mole \;of \;NO}) x \frac{2g \;of \;H_2}{mole \;of \;H_2}

n_(_N_2_) =4.34 g

Learn more about limiting reagents here:

brainly.com/question/26905271

#SPJ1

5 0
1 year ago
Other questions:
  • How do the particles in matter change when a substance becomes hotter, cools down, or changes state
    9·1 answer
  • Consider a solution containing 0.100 m fluoride ions and 0.126 m hydrogen fluoride. the concentration of hydrogen fluoride after
    10·2 answers
  • Which descriptions apply to isomers? Check all that apply.
    12·2 answers
  • 0.57 centimeter to meter
    11·1 answer
  • Acetic acid has a boiling point of 118.5 C and a boiling point constant of 3.08. What is the boiling point of a 3.20 m solution
    10·1 answer
  • Is petrol hard to make
    9·1 answer
  • According to the law of conservation of mass, if an element A has an atomic mass of 2 mass units and element B has an atomic mas
    10·1 answer
  • Is supports combustion a chemical or physical property
    9·2 answers
  • What is pH - discuss the pH scale
    10·1 answer
  • What mass of H atoms is contained in 50.7 g<br> of NH3?<br> Answer in units of g.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!