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
LenaWriter [7]
3 years ago
14

Study the image. Warm and cold air fronts with points labeled 1 through 4. 1: cold air entering from the left and moving down. 2

: clouds with rain. 3: warm air entering from the right and moving up. 4: warm air entering from the top left and moving down toward the clouds. Warm and cold air fronts with points labeled 1 through 4. 1: cold air entering from the left and moving down. 2: clouds with rain. 3: warm air entering from the right and moving up. 4: warm air entering from the top left and moving down toward the clouds. At which point is cool air circulating beneath warm air? 1 2 3 4
Chemistry
2 answers:
nata0808 [166]3 years ago
7 0

Answer:

1

Explanation:

NISA [10]3 years ago
4 0

Answer:

1

Explanation:

Edge 2021

You might be interested in
I exercise
KatRina [158]

Explanation:

sorry po king Hindi kopo ma sagot

7 0
3 years ago
A large rift valley can be found along the east coast of Africa. It has been slowly widening over time, and it is now wide enoug
Serjik [45]

Answer:

wind and water erosion

4 0
3 years ago
Read 2 more answers
Standard temperature and pressure (STP), in the context of gases, refers to a) 298.15 K and 1 atm b) 273.15 K and 1 atm c) 298.1
lina2011 [118]

Answer : The correct option is, (B) 273.15 K and 1 atm

Explanation :

STP : STP stands for standard temperature and pressure.

STP conditions :

The temperature is, 0^oC or 273.15K or 32^oF

The pressure is, 1atm or 101.325kPa

The volume is 22.4 L for 1 mole of a substance.

Hence, the correct option is, (B) 273.15 K and 1 atm

7 0
3 years ago
Question 43 please. i’m not sure if i got the right answer
hram777 [196]

a) The reaction is exothermic since the overall enthalpy change is negative. this means that the system has lost energy to the environment, namely, the apparatus and due to drought.

b) We first calculate the number of moles in 3.55 grams of magnesium.

number of moles= mass/ atomic mass

                            =3.55/24

                            =0.1479 moles(to 4sf)

now, if 2 moles of magnesium give -1204kJ

        How much energy is given by 0.1479 moles

       = (0.1479×-1204kJ)

        =-89.0358kJ (don't forget the negative sign)

c) two molesof MgO produces -1204kJ of energy

then -234kJ will be produced by

=(-234kJ×2moles)/1204kJ

=0.3887moles

one mole of MgO weighs 24+16=40

therefore the mass produced is 0.3887moles×40=15.548grams

(d) we first find the number of moles of MgO in 40.3 grams

number of moles=mass/RFM

=40.3g/40= 1.0075moles

if 2 moles of MgO give 1204 kJ then decomposing 1.0075 moles requires

(1.0075 moles×1204kJ)/2=606.515kJ

4 0
3 years ago
Since the electronegativity of O > C = H, the shared electrons in the covalent bonds of carbon dioxide (CO2) and methane (CH4
Stells [14]

Answer: option B. closer to oxygen in the case of CO2

Explanation:

5 0
3 years ago
Other questions:
  • The rare earth elements include A. the lanthanide series and the alkali metals. B. the alkali metals and the transition metals.
    9·2 answers
  • According to collision theory, what three factors govern the effect of temperature on the rate of a chemical reaction?
    15·1 answer
  • The true value was 0.120. What was your percent<br> error? ____ %
    10·2 answers
  • Why should copper and sodium be in different groups
    10·1 answer
  • What elements are in the star sirius?
    5·1 answer
  • How to calculate the atomic mass of Cl​
    9·1 answer
  • Calculate the relative rate of effusion for the orange to blue spheres. The root-mean-square speed for the orange spheres is 565
    10·2 answers
  • The following half-reaction can be balanced in acidic solution:
    5·1 answer
  • Calculate the calories of heat required to melt 35.0 g of ice.
    9·1 answer
  • Find the density of a piece of chocolate with these measurements: 2.4 g and 5.12 mL
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!