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
anastassius [24]
2 years ago
6

How is this called ? can someone help me please?​

Chemistry
1 answer:
Hitman42 [59]2 years ago
4 0
That is called chemistry
You might be interested in
Determine which equations you would use to solve the following problem: Calculate the amount of heat needed to change 20.0 g of
Inessa [10]

Answer:

Q = 4019.4 J

Explanation:

Given data:

Mass of ice = 20.0 g

Initial temperature = -10°C

Final temperature = 89.0°C

Amount of heat required = ?

Solution:

specific heat capacity of ice is 2.03 J/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1

ΔT =  89.0°C - (-10°C)

ΔT = 99°C

Q = 20.0 g ×2.03 J/g.°C × 99°C

Q = 4019.4 J

3 0
3 years ago
Which of the following is NOT a trait of gases ?
VikaD [51]
C. fluid
is the correct answer
8 0
3 years ago
Read 2 more answers
How many electrons does calcian have to gain or lose to have 8 valence electrons
skelet666 [1.2K]

Answer:

two electrons

Explanation:

Calcium atoms will lose two electrons in order to achieve the noble gas configuration of argon.

8 0
2 years ago
Technetium 99 releases a gamma ray
GenaCL600 [577]

what?? please reword this

6 0
4 years ago
An automobile tire contains air at 320.×103 Pa at 20.0 ◦C. The stem valve is removed and the air is allowed to expand adiabatica
NISA [10]

Answer:

6.15.3 k

Explanation:

From the question we can see that

q = 0,  Δu = w

Then,

T_f = \frac{C_{V,m}+RP_{ext}P_i}{C_{V,m}+RP_{ext}P_f} T_i

putting values wet

=\frac{2.5\times 8.314+8.314\left(10^5\right)\left(3.20\times 10^5\right)}{2.5\times 8.314+\left(8.314\right)\left(10^5\right)\left(10^5\right)}\times \:293

T_f = 615.3 K

6 0
3 years ago
Other questions:
  • A sample of neon occupies a volume of 478 mL at STP. What will be the volume of the neon when the pressure is reduced to 93.3 kP
    15·1 answer
  • A surface wave is a combination of what two waves
    9·2 answers
  • Consider two gases, A and B, are in a container at room temperature. What effect will the following changes have on the rate of
    14·2 answers
  • The illustration depicts possible routes of collisions in the reaction CH₂CH₂ + HCl CH₃CH₂Cl. Which of the following statements
    6·2 answers
  • Which of the following is an example of how pictures of a planet's surface can provide evidence about the planet's natural resou
    5·1 answer
  • What is the oxidation number for CO2
    13·1 answer
  • Express the answers to these problems in the correct number of
    10·1 answer
  • N the reaction Mg + 2HCl -> MgCl2 + H2 which element’s oxidation number does not change?
    8·1 answer
  • 3. Which element has the ground state electronic configuration, 1s22s22p63s23p645' ?
    8·1 answer
  • Calculate the kilojoules needed to heat 231 g of gold from 18 ∘C to 195 ∘C.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!