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
gulaghasi [49]
3 years ago
6

What elements are in hay

Chemistry
2 answers:
Ivenika [448]3 years ago
4 0
I looked it up for u

notka56 [123]3 years ago
3 0
I hope that this helps

You might be interested in
SOMEONE HELP ME ASAP!!!
nata0808 [166]

Answer:

A

Explanation:

4 0
2 years ago
Read 2 more answers
9. Which series shows levels of organization in order from the smallest to the largest
erastova [34]

Answer:

B. Atom, molecule, cell, organism

Explanation:

Atoms make up molecules. Molecules make up cells. Cells make up tissue. A number of tissues working together creates an organ. Multiple organs working together creates an organ system. Organ systems working together creates one happy, functioning organism. :)

8 0
2 years ago
Explain how carbon moves in and out of the ocean.
Marta_Voda [28]

Answer:

Living things in the ocean are able to move carbon from the atmosphere into surface waters.

Explanation:

8 0
3 years ago
What pressure, in atm, is exerted by 2.50 L of gas containing 1.35 mol at 320 K?
salantis [7]

Answer:

Option A = 14.19 atm

Explanation:

Given data:

Volume of gas = 2.50 L

Number of moles of gas = 1.35 mol

Temperature of gas = 320 K

Pressure of gas = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will put the values in formula.

P × 2.50 L =  1.35 mol × 0.0821 atm.L/ mol.K×   320

P = 35.467 atm.L/ 2.50 L

P = 14.19 atm

Thus, option A is correct.

6 0
3 years ago
Explain how energy is conserved between this reaction and the and surrounding environment C3H8+4O2->3CO2+4H2O+ heat (-2218.6)
alukav5142 [94]

Answer:

The heat of formation = Heat of formation of the products - Heat of formation of the reactants

= -2323 + 104 = -2219 ≈ -2218.6 kJ/mol.

Explanation:

The law of conservation of energy states that the total energy is constant in any process. Energy may change in form or be transferred from one system to another, but the total remains the same

The heat of formation of C₃H₈ is 3C + 4 H₂ → C₃H₈ \Delta H^{\circ}_f  -104 kJ/mol

The heat of formation of O₂ is O₂ (g) → O₂ (g)  \Delta H^{\circ}_f  0 kJ/mol

The heat of formation of H₂O is H₂(g) + 1/2 O₂→ H₂O (g)  \Delta H^{\circ}_f  -286kJ/mol

The heat of formation of CO₂ is C (s) + O₂ (g) → CO₂ (g)  \Delta H^{\circ}_f  -393 kJ/mol

Therefore, in the given  reaction we have;

C₃H₈ + 4 O₂ → 3 CO₂ + 4 H₂O

The heat of formation = Heat of formation of the products - Heat of formation of the reactants

The heat of formation = 3 × (-393) + 4 × (-286) - (-104) = -2219 ≈ -2218.6 kJ/mol.

5 0
3 years ago
Other questions:
  • HELP ASAP!! THIS IS DUE TOMORROW!! I WILL MARK YOU AS A BRAINLIEST IF ANSWERED NOW!! <br><br> #1-7
    6·1 answer
  • Based on its location on the periodic table, which element would be most likely to form a negative ion?
    13·2 answers
  • What is water in a scientific knowledge​
    11·1 answer
  • there about 5000 elements, which combine to form the vast number of diffrent substances in the world around us
    5·1 answer
  • Which TWO statements are true about the changing salt concentrations of ocean water?
    7·1 answer
  • The scientific method is one application of crítical thinking.<br> True or false
    9·2 answers
  • Non-living parts of an ecosystem (air, water, soil)
    6·1 answer
  • What effect does heat have on a chemical reaction?
    7·1 answer
  • If n=7 and l=6, What are the values of l?​
    11·1 answer
  • Do you think that photochemical smog levels are high during the winter or during the summer? Explain.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!