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
kotykmax [81]
3 years ago
15

HOLMIUM

Chemistry
1 answer:
Sophie [7]3 years ago
8 0

Answer:

1. The graph where x axis and y axis are present is called coordinate.

4. 18

You might be interested in
Air contains Nitrogen, Oxygen and Carbon Dioxide gases, all retaining their individual, distinct chemical properties. Air is the
jonny [76]
Mixture is correct answer
4 0
3 years ago
Read 2 more answers
Practice: How many protons, neutrons and electrons are in the following?
Nata [24]

Answer:

The answer to your question is below

Explanation:

When we have the number of an element followed by a number, that number is the atomic mass.

Atomic mass is the number of protons plus neutrons.

                              Protons                    Neutrons

Carbon-13                  6                            13 - 6 = 7

Chromium-51            24                          51- 24 = 27

Strontium-88             38                           88 - 38 = 50

Boron-10                     5                            10 - 5 = 5

6 0
3 years ago
Read 2 more answers
A rigid tank that contains 2 kg of N2 at 25°C and 550 kPa is connected to another rigid tank that contains 4 kg of O2 at 25°C an
koban [17]

Answer:

The volume in the first tank = 0.32 m^{3}

The volume in the second tank = 2.066 m^{3}

The  final pressure of the mixture = 203.64 K pa

Explanation:

<u>First Tank </u>

Mass = 2 kg

Pressure = 550 k pa

Temperature = 25 °c = 298 K

Gas constant for nitrogen = 0.297 \frac{KJ}{Kg K}

From the ideal gas equation

P V = m R T

550 × V = 2 × 0.297 × 298

V = 0.32 m^{3}

This is the volume in the first tank.

<u>Second tank</u>

Mass =  4 kg

Pressure = 150 K pa

Temperature = 25 °c = 298 K

Gas constant for oxygen = 0.26  \frac{KJ}{Kg K}

From the ideal gas equation

P V = m R T

150 × V = 4 × 0.26 × 298

V = 2.066 m^{3}

This is the volume in the second tank.

This is the iso thermal mixing. i.e.

P_{3} V_{3}  = P_{1} V_{1} + P_{2} V_{2} ----- (1)

V_{3}  = V_{1}  + V_{2}

V_{3}  = 0.32 + 2.066

V_{3}  = 2.386 \ m^{3}

Put this value in equation (1)

P_{3} × 2.386 =  550 × 0.32 + 150 × 2.066

P_{3} = 203.64 K pa

Therefore the  final pressure of the mixture = 203.64 K pa

3 0
3 years ago
Explain why the nucleus of an atom is positively charged but the overall charge of an atom is neutral
luda_lava [24]

Answer:

sorry

Explanation:

i'm not a chemistry student

but let me try

it is because the neutron of an atom is -

why the proton and electron is +and- (positive and negative)

so + and - = 0

4 0
3 years ago
Which element is a metal that is in the liquid phase at STP?
antoniya [11.8K]
I think the answer is mercury
4 0
4 years ago
Read 2 more answers
Other questions:
  • What are mole ratios used for?
    7·1 answer
  • 3. Based on the Periodic Table, which of the following elements has physical
    10·1 answer
  • I need helpppp! i don’t understand this
    12·1 answer
  • Which type of heat transfer causes a person sitting by the fire to feel warm
    9·2 answers
  • In order to produce CO2, a student put a sample of calcium carbonate in a flask and added hydrochloric acid using the following
    13·1 answer
  • Which describes a covalent bond?
    15·1 answer
  • Please help me on this if you dont mind
    10·1 answer
  • A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next fe
    6·1 answer
  • If I have 450 grams of iorn how many miles of it do I have
    11·1 answer
  • UNA ALEACIÓN DE DOS METALES A Y B TIENE UNA DENSIDAD RELATIVA DE 5 LAS DENSIDADES RELATIVAS DE A Y B RESPECTIVAMENTE SON 4 Y 10
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!