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
mel-nik [20]
2 years ago
7

Tyra designed an experiment to demonstrate an annular solar eclipse. The steps of the

Chemistry
1 answer:
choli [55]2 years ago
4 0

Answer:

The answer is D.

Explanation:

Hold the styrofoam ball at arm's length from the eye.

You might be interested in
Which of the following is a mixture?<br><br> steel<br> water<br> oxygen<br> gold
Sholpan [36]
Steel because it is a physical combination of different metals.
3 0
3 years ago
Read 2 more answers
Temperature measures _____. A. the heat content of a material B. the average kinetic energy of particles in a material C. the pr
N76 [4]
The answer to fill in the blank would be B) because say for ex you are sick and your mom checks your temperature, she is doing this to see how hot/cold are you, so she is checking your body to see how you are, so same with this, temperature basically measures the kinetic energy/motion of particles in something.
7 0
4 years ago
1. A student wants to test if giving dogs a toy to play with makes their tail wag more. He gives dog toys to one group, while an
WINSTONCH [101]

Answer

Experimental - The Dogs With Toys

Control - The Dogs With No Toys

Explanation - Im smart

5 0
4 years ago
What is the formal charge on the xenon atom (xe) in xef2?
Likurg_2 [28]
F  is a    group  17   element  which  are  referred  to  as halogens.  hence  requires  one  electrons   to  obtain  octet    electron  configuration.Therefore F  has  -1  charge.  Xe  is  a  group  18  element  which  are  referred  to  as    noble  gas  which  has  octet  electron  configuration but due  to  the two  F-   Xe   has  +2   formal  charges.
5 0
4 years ago
Calculate the standard enthalpy change for the reaction at 25 ∘ C. Standard enthalpy of formation values can be found in this li
Anastasy [175]

Answer:

-179.06 kJ

Explanation:

Let's consider the following balanced reaction.

HCl(g) + NaOH(s) ⟶ NaCl(s) + H₂O(l)

We can calculate the standard enthalpy change for the reaction (ΔH°r) using the following expression.

ΔH°r = 1 mol × ΔH°f(NaCl(s)) + 1 mol × ΔH°f(H₂O(l)) - 1 mol × ΔH°f(HCl(g)) - 1 mol × ΔH°f(NaOH(s))

ΔH°r = 1 mol × (-411.15 kJ/mol) + 1 mol × (-285.83 kJ/mol) - 1 mol × (-92.31 kJ/mol) - 1 mol × (-425.61 kJ/mol)

ΔH°r = -179.06 kJ

7 0
3 years ago
Other questions:
  • Explain how original mass of dry ice compares with the mass of carbon dioxide gas?
    15·1 answer
  • A low level of carbon dioxide labeled with 14C is accidentally released into the atmosphere surrounding industrial workers as th
    14·1 answer
  • 5. The strength of a gravitational force between two objects depends on
    10·1 answer
  • If 8.0 g of NH4HS(s) is placed in a sealed vessel with a volume of 1.0 L and heated to 200 ∘C the reaction NH4HS(s) ⇌ NH3(g) + H
    8·1 answer
  • PLEASE HELP!!!
    14·1 answer
  • Two forces are described below: Force 1: The force with which Earth pulls a person to its center Force 2: The pulling force appl
    8·2 answers
  • If a wave is traveling at 36 m/s and has a frequency of 6 Hz, what is its wavelength?
    6·1 answer
  • The saturation point for a solution is 50.0 grams of solute per 500 grams of solvent. How many grams of solute can be dissolved
    5·1 answer
  • Which substance has a melting point greater than room temperature
    12·1 answer
  • HELPPPPPPPPP<br> HI PLSPLS
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!