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
natima [27]
3 years ago
13

ILL GIVE BRAINLIEST

Chemistry
1 answer:
Mice21 [21]3 years ago
7 0

Answer:

Which of the following happens during a lunar eclipse?

Select one:

a. Earth casts a shadow on the moon.

<u>b. The moon casts a shadow on Earth. </u>

c. Earth stops revolving in its orbit.

d. Earth starts revolving around the moon.

Explanation:

You might be interested in
What is a similarity between wind and water?
labwork [276]
They are both sources of power for objects that people use.
5 0
2 years ago
How many significant figures does 0.0006510 of have?
arsen [322]
It has 4 significant figures. If you see the Zero after the one decimal point you don’t count that and instead just started at 6
7 0
3 years ago
Read 2 more answers
Pls someone help ASAP
Alisiya [41]

Answer:

i cant see the picture good

6 0
2 years ago
If the vapor pressure of ethanol at 34.7degree C is 100
saw5 [17]

Answer:

we will use the Clausius-Clapeyron equation to estimate the vapour pressures of the boiling ethanol at sea level pressure of 760mmHg:

 ln (P2/P1) = \frac{ΔvapH}{R}([tex]\frac{1}{T1}-\frac{1}{T2})

where

P1 and P2 are the vapour pressures at temperatures  T1 and T2

Δ vapH  = the enthalpy of vaporization of the ETHANOL

R  = the Universal Gas Constant

In this problem,

P 1 = 100 mmHg

;  T 1 = 34.7 °C = 307.07 K

P 2 = 760mmHg

T 2 =T⁻²=?

Δ vap H = 38.6 kJ/mol

R = 0.008314 kJ⋅K -1 mol -1

ln ( 760/10)=(0.00325 - T⁻²) (38.6kJ⋅mol-1 /0.008314 )

0.0004368=(0.00325 - T⁻²)  

T⁻²=0.002813

T² = 355.47K

6 0
3 years ago
The formula ca(no3)2 tells us that one formula unit of this compound is composed of ________ calcium atoms, ________ nitrogen at
ad-work [718]

Answer:- The formula Ca(NO_3)_2 tells us that one formula unit of this compound is composed of one calcium atom, two nitrogen atoms, and six oxygen atoms.

Explanations:- Subscripts tell us about the number of atoms of the element for which they are used. For example, here the subscript of Ca is one, it means there is one calcium atom in the given one formula unit.

When we have subscripts inside and outside the parenthesis then they are multiplied and the outside subscript is considered for all the atoms present inside the parenthesis.

Here, for the given chemical formula, the subscript of N is 1 and the subscript present outside is 2. So, 1 x 2 = 2 and for oxygen, 3 x 2 = 6

So, we have one calcium atom, two nitrogen atoms and six oxygen atoms for one formula unit of given compound.

3 0
3 years ago
Read 2 more answers
Other questions:
  • The balanced equation below shows the products that are formed when butane (C4H10) is combusted. 2C4H10 + 13O2 mc009-1.jpg 8CO2
    12·2 answers
  • How many significant figures are in the number 0.00230? O 6
    11·1 answer
  • A silver cube with an edge length of 2.42 cm and a gold cube with an edge length of 2.75 cm are both heated to 85.4 ∘C and place
    14·1 answer
  • A plate moves 200 m in 10,000 years. What is its rate in cm/year?
    15·1 answer
  • Explain why a fluorescent light bulb is not as hot as an incandescent light bulb.
    8·2 answers
  • The concentration of hydrogen peroxide solution can be determined by
    13·1 answer
  • Which one does Temperature measure
    11·1 answer
  • DONT SKIPP What type of bond will occur between lithium and bromine?
    14·1 answer
  • Write a hypothesis using IF-THEN - BECAUSE of statement. (PLEASE HELP)
    5·1 answer
  • A ball cart is moving at a rate of 2ms the cart suddenly stops and the ball continues to travel in the same direction at the sam
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!