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
Neporo4naja [7]
3 years ago
12

Identify each of the following elements as an actinide, an alkali metal, an alkaline-earth metal, a halogen, a lanthanide, a met

alloid, a noble gas, a transition metal, or a post-transition metal. Use the most specific term that applies. a. antimony b. tungsten c. argon d. iron e. bromine f. cesium g. cerium h. uranium i. calcium j. lithium
Chemistry
1 answer:
dezoksy [38]3 years ago
8 0

Answer:

Antimony - metalloid

Tungsten- Transition metal

Argon - Noble gas

Iron - Transition metal

Bromine- Halogen

Cesium- Alkali metal

Cerium- lanthanide

Uranium - Actinide

Calcium- Alkaline earth metal

Lithium - Alkaline metal

Explanation:

Lithium is an alkaline metal because it belongs to group 1 of the periodic table. This is the general name for the group.

Calcium is an alkaline earth metal as it belongs to group 2 of the periodic table. This is the general name of the group.

Uranium is an actinide as it belongs to the second series of the f block

Cerium is the second element in the lanthanide series after lanthanum

Cesium belongs to group 1 and hence is an alkaline metal.

Bromine is a halogen as it belongs to group 7 of the periodic table

Iron is a transition metal as it belongs to the first series of transition metals

Argon is s noble gas as it belongs to group 18

Tungsten is s transition element and it belongs to the third series

Antimony is a metalloid

You might be interested in
Why would you expect a packet of sugar to dissolve faster in hot tea than iced tea?
Phantasy [73]
Because of the heat level which makes the sugar break down faster. Your welcome.
4 0
3 years ago
Read 2 more answers
Can you name a noteworthy incident in french history that happened at the time of Nicolas Appert death???
liq [111]
Research the July Monarchy, and the beggining of the Second Republic. That should help out.
6 0
3 years ago
Correct answer will be marrk as braineast answer​
diamong [38]

Answer:

Q 20: I think this answer would be rarer to denser medium

Q 21: The fluctuation of physical condition in the Earth's atmosphere.

Q 22: I don't see white as an option, but I'm pretty sure that's the correct answer.

7 0
3 years ago
A ball is dropped from a height of 1.20 m and hits the floor. The ball compresses and then reforms to spring upwards from the fl
diamong [38]

Answer:

\large \boxed{\text{98 m$\cdot$s}^{-2}}

Explanation:

The formula for the velocity of the ball is

v = \sqrt{2gh}

1. Velocity at time of impact

v = -\sqrt{2 \times 9.807 \times 1.20} = -\sqrt{23.54} = -\textbf{4.85 m/s}

2. Velocity on rebound

The ball has enough upward velocity to reach a height of 0.86 m.

v = \sqrt{2 \times 9.807 \times 0.86} = \sqrt{16.87} =\textbf{4.11 m/s}

3. Acceleration

a = \dfrac{\Delta v}{\Delta t} = \dfrac{4.11 - (-4.85)}{ 0.091} = \dfrac{8.96 }{0.091} =\textbf{98 m$\cdot$s}^{\mathbf{-2}}\\\\\text{The acceleration while the ball is in contact with the floor is $\large \boxed{\textbf{98 m$\cdot$s}^{\mathbf{-2}}}$}

5 0
4 years ago
A 0.1025-g sample of copper metal is dissolved in 35 ml of concentrated hno3 to form cu2 ions and then water is added to make a
GalinKa [24]

Molarity is defined as number of moles of solute in 1 L of solution.

Here, 0.1025 g of Cu is reacted with 35 mL of HNO_{3} to produced Cu^{2+} ions.

The balanced reaction will be as follows:

Cu+3HNO_{3}\rightarrow Cu(NO_{3})_{2}+NO_{2}+H_{2}O

From the above reaction, 1 mole of Cu produces 1 mole of Cu^{2+}, convert the mass of Cu into number of moles as follows:

n=\frac{m}{M}

molar mass of Cu is 63.55 g/mol thus,

n=\frac{0.1025 g}{63.55 g/mol}=0.0016 mol

Now, total molarity of solution, after addition of water is 200 mL or 0.2 L can be calculated as follows:

M=\frac{n}{V}=\frac{0.0016 mol}{0.2 L}=0.008 mol/L=0.008 M

Thus, molarity of Cu^{2+} is 0.008 M.



7 0
3 years ago
Other questions:
  • What is the maximum volume of a 0.788 M CaCl2 solution that can be prepared using 85.3 g CaCl2
    8·1 answer
  • Can you explain the relationship between the spinning pinwheel, the X, and the electron cloud model of the atom
    15·1 answer
  • Describe the difference between an atomic element and a molecular element. Check all that apply. Check all that apply. Molecular
    7·1 answer
  • A sample of carbon-12 has a mass of 6.00 g. How many atoms of carbon-12 are in the sample?
    14·2 answers
  • I need help with the second part of question 2. Please answer by 7:40. On, March 21, 2017.
    12·1 answer
  • What is the dropping of a sediment called
    6·2 answers
  • The slowest step of a reaction mechanism is called the
    11·1 answer
  • g If a small amount of a strong acid is added to a buffer made up of a weak acid, HA, and the sodium salt of its conjugate base,
    13·1 answer
  • How many orbitals are in 5dx2<br>​
    7·1 answer
  • Which of the following is supported by reliable evidence?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!