Answer:
1.5 moles of sodium chloride are present.
Explanation:
Given data:
Number of moles of sodium chloride = ?
Number of atoms of sodium chloride = 9.07×10²³
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ atoms
9.07×10²³ atoms × 1 mol / 6.022 × 10²³ atoms
1.5 moles of sodium chloride are present.
what two types of evidence are used to classify organisms. Which animal shares the most traits with humans and do both lemurs and humans have the trait listed at Point D explain?
Explanation:
6.The main pieces of evidence that scientists use to classify organisms are essentially form and evolutionary relationships.
9. chimpanzee
10. The answer is no, lemurs are not bipedal, i.e, they don't use two legs for walking like human do and they don't have language like ours.
Turning on your X-Box is an example of___ energy turning into ___ energy.
A.electrical,nuclear
B.nuclear,sound
C.electrical,light
D.electrical,chemical
Answer:
electrical --> light
Explanation:
Why do scientist use the scientific method
Answer:
B
Explanation:
scientists always look for evidence
Answer:
Yea its B
Explanation: The person above me legit toke the answer out of my mouth
The chemical equation below shows the photosynthesis reaction.
6CO2 + 6H2O → C6H12O6 + 6O2
A reaction uses 528 g of CO2. How many grams of water are used in this reaction?
Answer:
12
Explanation:
Will get brainliest.
Answer:
1.00 g
Explanation:
got it on pex
PLZ HELP!!!!!asapnow
Answer:
Friction of wind against the ocean surface
How can calcium oxide change directly to limewater?
Wants equation and observation
Answer:
Lime(Calcium Oxide) is a white solid with strongly basic properties.Lime reacts readily with water to produce slaked lime,which is the chemical compound calcium hydroxide.....
When carbon dioxide gas is passed through or over limewater,it turns milky due to the formation of calcium carbonate.
Calculate the molar mass of NaNO3-
Apollo 11 made a ______ landing.
Answer:
Apollo 11 made a capsule landing
Explanation:
Answer: i don’t know what type of landing you mean
Explanation:
They did a lunar landing then reentry and then capsule landing.
hurry please Which of the following is a compound?
CO2
Ne
O2
P4
Answer:
p4
Explanation:
Can someone answer ASAP if you hurry I will mark brainliest
Answer:
Electrical and magnetic
You exert a gravitational force on the pupil and the pupil exerts an equal gravitational force on you. ... The size of the gravitational force depends on the mass of the objects involved. The greater the mass, the greater the gravitational force.
Explanation:
Write the name for the IONIC compound that contains two aluminum atoms and three sulfur atoms. (Need help ASAP)
why do stars appear to be bigger in the night?
Answer: in the daytime the sun is out so the stars are not visible becuase the suns reflection! At night When you gaze at the constellations, every star produces an image that's the same size, but your retina isn't sensitive enough to respond to the outer parts of those images except for the brighter stars — which therefore look bigger than the fainter ones.
Explanation:
This is what I found on goog.le a while ago now it might actually help if I’m wrong I apologiz, I hope this was your quistion!
Give the name of one of the 3 common acids used in chemistry
Answer:
Common strong acids include hydrochloric acid, sulfuric acid, phosphoric acid, and nitric acid. Common weak acids include acetic acid, boric acid, hydrofluoric acid, oxalic acid, citric acid, and carbonic acid.
How much energy is required to melt 2 kg of copper? Use the table below and
this equation: Q = mLfusion
A. 125.6 kJ
B. 9460 kJ
C. 414 kJ
D. 4730 kJ
Answer:
C. 414 kJ
Explanation:
Given parameters:
Mass of copper = 2kg
Unknown:
Amount of energy required to melt the copper = ?
Solution:
To solve this problem, we use:
Q = m L
m is the mass
L is the latent heat of fusion of copper = 207kJ/kg
So;
Q = 2 x 207 = 414kJ
How many grams are in 3.00 x 10^24 molecules of Zn(C2H3O2)2?
Answer:
Mass = 917.4 g
Explanation:
Given data:
Number of molecules = 3.00 ×10²⁴ molecules
Mass in gram = ?
Solution:
1 mole contain 6.022 × 10²³ molecules
3.00 ×10²⁴ molecules × 1 mol / 6.022 × 10²³ molecules
0.5×10¹ mol
5 mol
Mass in gram:
Mass = number of moles × molar mass
Mass = 5 mol × 183.48 g/mol
Mass = 917.4 g
help me please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
What is one possible excited state configuration for fluorine? *
Answer:
Excited State Configuration: 1s^2 2s^2 2p^4 3s^1 are sperated by 13.00 eV.
What is the product(s) in the reaction below?
Answer:
imma go with the answer B
The product in the reaction [tex]\rm Zn + 2HCl \rightarrow[/tex] is [tex]\rm ZnCl_2 + H_2[/tex]. The correct answer is option D.
A reaction is a process that involves the transformation of one or more substances into one or more different substances.
The reaction between zinc (Zn) and hydrochloric acid (HCl) is a classic example of a single displacement reaction. In this reaction, zinc reacts with hydrochloric acid to produce zinc chloride ([tex]\rm ZnCl_2[/tex]) and hydrogen gas ([tex]\rm H_2[/tex]).
The balanced chemical equation for this reaction is:
[tex]\rm Zn(s) + 2HCl(aq) \rightarrow ZnCl_2(aq) + H_2(g)[/tex]
Therefore, the product of the reaction between zinc and hydrochloric acid is zinc chloride ([tex]\rm ZnCl_2[/tex]) and hydrogen gas ([tex]\rm H_2[/tex]). Option D is the correct answer.
Learn more about reaction here:
https://brainly.com/question/16737295
#SPJ6
Star A and star B are the same distance away from earth. From earth, star A seems brighter than star B. Which star has the highest absolute brightness?
Answer:
Star B
Explanation:
Star B, this is because, usually in the discussions about stars, the more luminous star or say, the brighter star usually is the one that possesses the smaller absolute brightness.
That being said, succinctly put, if we have two stars A and star B, if star A is brighter than star B, then star A has a lower absolute brightness. Also, if star B is less brighter than star A, then it has the higher absolute brightness.
Answer:
STAR B
Explanation:
