Is NO ionic or covalent
how many molecules are in 4 moles of He?
Answer:
⇒ n = 2.4088 × 10²⁴
- So, the no of atoms in 4 moles of helium is 2.4088 × 10²⁴.
Explanation:
Please help me :D I’m begging rn lol
Answer:
To catch a ball, the fielder has to stop the ball. This means, force is applied against the motion of the ball. So, between the fielder applies force on the ball and the ball comes to rest, the ball moves in the direction opposite to the direction of force. Thus work is negative.
Explanation:
MARK ME AS BRAINLIEST PLSSS
How many moles of H2S are produced?
Answer:
You can view more details on each measurement unit: molecular weight of H2S or grams This compound is also known as Hydrogen Sulfide. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles H2S, or 34.08088 grams. Note that rounding errors may occur, so always check the results.
The number of grams that one "mole" of a substance weights is the definition of molar mass. So, the molar mass of H₂S is "34.08088"gams.
Molar mass:In the definition of molar mass is the total atomic weights of the atoms that make up a molecule.Detailed information about each measurement unit can be found here: H₂S molecular weight in grams Hydrogen Sulfide is another name for this substance. A mole is the SI base unit for substance quantity. One mole of H₂S, or 34.08088 grams, is equal to one mole of H₂S.Find out more about the moles here:
brainly.com/question/20055843
what is the name for a change in the environment that causes an organism to change it's activity
Answer:
the answer is stimilus!
Explanation:
Calculate the atomic mass of oxygen if the three common isotopes of oxygen have masses of 15.995 amu (99.759% abundance), 16.995 amu (0.037 % abundance), and 17.999 amu (0.204 % abundance).
Answer:
16 amu
Explanation:
Is energy part of the system or surrounding?
Answer:
Se Puede Traducir?
Explanation:
Mmm?
Answer:
i think it is surroundings
How far does a car travel in 0.75 hr if it is moving at a constant speed of 88km/hr?
Answer:
66 km.
Explanation:
88 km / 1 hour = 66 km / 0.75 hours.
You need to just multiply 0.75 by 88.
The answer is 66 km.
Do liquids have kinetic energy? Yes or no.
Answer:
YESSIR
Explanation:
Why can single bonds rotate freely?
Why did Mendeleyev try to reorganize the periodic table?
Graphite has a specific heat of 0.709 J/gºC. If a 25 gram piece of graphite is cooled
by 17°C, how much energy was lost by the graphite?
Answer:
[tex]\boxed {\boxed {\sf 301.325 \ Joules }}[/tex]
Explanation:
Since we are given the mass, specific heat, and change in temperature, we should use this formula for energy:
[tex]q=mc \Delta T[/tex]
The mass of the graphite is 25 grams. Graphite's specific heat is 0.709 J/g °C. The change in temperature is 17 degrees Celsius.
[tex]m= 25 \ g \\c= 0.709 \ J/g \ \textdegree C \\\Delta T= 17 \ \textdegree C[/tex]
Substitute the values into the formula.
[tex]q= (25 \ g)( 0.709 \ J/g \ \textdegree C )( 17 \ \textdegree C)[/tex]
Multiply the first two numbers. The grams will cancel.
[tex]q= 17.725 \ J/ \textdegree C(17 \ \textdegree C)[/tex]
Multiply again. This time the degrees Celsius cancel.
[tex]q= 301.325 \ J[/tex]
The graphite loses 301.325 Joules of energy.
As mass decreases, gravitational force ____
increase or decrease
Which two subatomic particles have an equal, but opposite charge?
Answer:
Electrons have a negative charge. The charge on the proton and electron are exactly the same size but opposite. Neutrons have no charge. Since opposite charges attract, protons and electrons attract each other.Hope that helps
Explanation:
CuSO4 +
KI →
Cul +
12 +
K2SO4
lons form when atoms gain or lose valence electrons. When an atom gains
electrons, it becomes negatively charged, and when an atom loses
electrons it becomes positively charged. Why?
Answer:
In neutral atom number of electrons (negativity charged particle) and number of proton ( positively charged particle) are equal.
When one or more electrons are lost so positive charge particle increases and cation is formed.
For example in Na 11 electrons and 11 protons are present when it loses one electrons protons are 11 and 10 electron are remaining so one positive charge is present.
Morever when an element gain electrons one negative charge increases and anion is formed. For example in Cl 17 proton and 17 electrons are present when it gain one electron 18 electrons and 17 protons are now present one negative is more so anion negative ion is formed.
Explanation:
One of the main jobs of _________ is to support the leaves
The flowers
the seeds
the roots
the stem
Answer:
Stem
Explanation:
Answer:
option-(d) stem
Explanation:
Stems have four main functions which are: Support for and the elevation of leaves, flowers and fruits. The stems keep the leaves in the light and provide a place for the plant to keep its flowers and fruits. Transport of fluids between the roots and the shoots in the xylem and phloem...
I hope it help you
1.
What is the light that you can see called?
VED
DANCE
WOW
EN
M
W
NOGO
OLET
a) observatory light
c) visible light
b) ultraviolet light
d) infrared light
Answer:
The correct answer is c. Your welcome
PLEASE HELP!!!!!!!!!!!!!!!!!!!! ASAP!!!!!!!!! Which two elements are mainly found in the inner and outer core?
A. Fe and Ni
B. Fe and Si
C. Ni and Si
D. Ni and C
PLEASE TELL ME WHAT THOSE ABREVIATIONS MEAN ALSO!!!!!!!!!!!!!
A doctor prescribes 125 mg of penicillan to be taken 4 times each day. The
concentration of the solution given to the patient is 250mg penicillan/5ml. How
many mL should the patient take in each dose?
1) 500 mL
2) 10.0 mL
3) 2.50mL
4) 50.0 mL
5) 2.0 mL
10 ml should the patient take in each dose
Further explanationGiven
125 mg of penicillan ⇒ 4 times/day
The concentration = 250 mg/5 ml
Required
The volume of the dose
Solution
The mass of penicillan/day :
= 125 mg x 4 times
= 500 mg
The volume/day :
= 500 mg : 250 mg/5 ml
= 10 ml
What does the large number in front of
the molecule represent?
How many moles of a gas sample are in a 5.0 L container at 373 K and 203 kPa?
0.33 mole
0.66 mole
1.11 moles
3.05 moles
Answer:0.33
I'm not sure tho
Answer:
0.33
I just took the test.
what kind of substance is rust
The total pressure of a mixture of hydrogen, oxygen, and methane is 96.4 kPa. The partial pressures of hydrogen and oxygen are 13.5
kPa and 29.3 kPa respectively. What is the partial pressure of methane?
A. 139.2 kPa
B. 53.6 kPa
C. 82.9 kPa
D. 42.8 kPa
Answer:
53.7kPa
Explanation:
Given parameters:
Total pressure of the mixture = 96.4kPa
partial pressure of hydrogen = 13.4kPa
partial pressure of oxygen = 29.3kPa
Unknown:
partial pressure of methane = ?
Solution:
The total pressure of mixture is equal to the sum of their particles pressures;
Partial pressure of methane = 96.4kPa - (13.4kPa + 29.3kPa)
Partial pressure of methane = 53.7kPa
Answer: 53.6
Explanation: I just took the test and got it right.
Omg please help me im doing so well in science i have a 100 and this if for a grade and i really need t o kkeep that 100
Answer:
b
Explanation:
This means that it takes more energy or heat to increase water's temperature than it does for most other substances. The specific heat of water is greater than that of dry soil, therefore water both absorbs and releases heat more slowly than land.
kind of protists can live in groups with different individuals performing different jobs (site 1)
Answer:
The plasmodial slime molds are the kind of protist that can live in groups in which different individuals perform different jobs. Some kinds of bacterial cell walls also have other functions.
1.State the relationship between the following properties:
a) mass and number of moles__________
b) number of moles and number of particles __________
6. Show how you will compute for the number of particles given the following:
a) Mass of the sample__________
b) Number of moles of the sample__________
Thankyouu po sana my mag answer
Answer:
bytbyufvguv vvg uggy yvgu vgu gyu7yng8ugng88yn
Help thanks thanks thanks
Answer:
the answer is (G)
Explanation:
It is G!
Your welcome!
True/False: All of the elements combine in a variety of ways to make up all living and all nonliving things
Answer:
true
Explanation:
find the product of (x+a)(x-a)
Answer:
x^2 - a^2
Explanation: