Answer k
Explanation: better luck
how do I out pizza the hut?
Answer:
you get one of their pizzas and then put more toppings on cheese on the pizza
Explanation:
Which property of light does this diagram show?
Can someone please help me with this question.
Answer:
Birds evolved from a group of meat-eating dinosaurs called theropods. That's the same group that Tyrannosaurus rex belonged to, although birds evolved from small theropods, not huge ones like T. rex.
Answer:
we haven't done anything to study the roots of the bird yet
The 2s orbital is at n=2. *
True
False
Answer:
Try true
Explanation:
But note I'm not sure
Explanation:
it is true
hope I helped you!! :))
PLS ANSWER I WILL GIVE BRAINLY TO First!!!
Answer:
if I tell the ans u won't give me brainly
There are three bulbs powered by a battery. What will happen if the middle light burns out.
Answer:
nuclear war ;P
Explanation:
What can be inferred from the graph?
do the yoga boi TUT yooooooooooooooooooooo9ooooooooot
What is the molar mass for MgO?
Answer:
40.3044 g/mol
Explanation:
what is the conclusion that males are stronger than females
What characteristics are similar between two biomes
Answer:
Niches
Explanation:
please help >>>>>>>>>>>
Answer:
Explanation:
mass of 1mole of brick = mass of 1 brick x avagadro number
= 4 kg x 6.022 x 10^23 bricks = 2.4 x 10^24 kg
No. of moles of bricks have a mass equal to the mass of the earth
= mass of earth / mass of 1 mole of brick
= [ 6 x 10^27 ] / [ 2.4 x 10^24 ]
= 2.5 x 10^3
= 2500 moles
1. What is solar energy? Give an example
Answer:
Solar energy is energy from the sun. for example solar panels are used to use energy for the sun to give you eletricity.
Explanation:
Explanation:
solar energy is energy from the sun, it can be used for electricity.
Name a non-metal used to make electrode in the cell.
Answer:
graphite
Explanation:
graphite is also good conductor of electricity
It took 25 seconds for a horse to complete a 400 meter race. What was the speed of the horse?
Answer:
v = 16 m/s
Explanation:
Given that,
Distance, d = 400 m
Time taken, t = 25 s
We need to find the speed of the horse. Speed is equal to distance covered divided by time taken. So,
[tex]v=\dfrac{d}{t}\\\\v=\dfrac{400\ m}{25\ s}\\\\v=16\ m/s[/tex]
So, the speed of the horse is 16 m/s.
How are you able to light a bunsen burner
Answer:
Lighting Bunsen Burner:
Explanation:
Close needle valve and collar. Open gas valve fully. Open needle valve 1/2 turn. Use the spark/lighter to light the flame.
35 Before the discovery of oxygen some scientists had a different theory about burning.
What did they believe was present in all substances that burned?
A air
B hydrogen
C phlogiston
D reactivity
Answer:
B i have to search it like 23 hours to find it but Thank you for sharing your question :)Which is correct ? I’m really confused
Answer:
A. Florine has a stronger pull than Magnesium
Explanation:
Electronegativity refers to the tendency in which an tom would attract electrons to itself.
Below each element in the periodic table is their electronegativity value. Florine has the highest electronegativity value of 4.0.
Going through options;
A. Florine has a stronger pull than Magnesium
Florine = 4.0
Magnesium = 1.2
This correct
B. Hydrogen has a stronger pull than Phosphorus
Hydrogen = 2.1
Phosphorus = 2.1
This is wrong
C. Potassium has a stronger pull than Sodium
Potassium = 0.8
Sodium = 0.9
This is wrong
D. Iron has a stronger pull than Bromine
Iron = 1.8
Bromine = 2.8
This is wrong
he chemical formula for lithium hydride is LiH A chemist determined by measurements that 0.0800 moles of lithium hydride participate in a chemical reaction. Calculate the mass of lithium hydride that participates. Be sure your answer has the correct number of significant digits.
CAN SOMEONE HELP PLEASE
The mass of lithium hydride that participates in the chemical reaction is 6.35 grams.
How to calculate mass?The mass of a substance can be calculated by multiplying the number of moles by its molar mass as follows:
mass (g) = no of moles (mol) × molar mass (g/mol)
According to this question, the chemical formula for lithium hydride is LiH. A chemist determined by measurements that 0.0800 moles of lithium hydride participate in a chemical reaction.
Molar mass of LiH = 6.941 + 1 = 7.94g/mol
mass = 0.8mol × 7.94g/mol = 6.35grams
Therefore, 6.35g is the mass of the lithium hydride.
Learn more about mass at: https://brainly.com/question/11954533
#SPJ1
I didn't really understand the explanation, can it be broken down
Answer:
40.06
Explanation:
(23 * 39) + (48 * 40) + (29 * 41)
100
= 40.06
formula:
(% of isotope A * mass of A) + (% of isotope B * mass of B) ......
100
Answer:
yes it can be broken down
respond if you got a min to help me with my problem
Answer:
I mean i dont know......
Explanation:
a. How does the atomic radius change going down and across the periodic table?
B. How does first ionization energy change going down and across the periodic table?
Answer: A when going down the periodic table your atomic radius will get bigger same if you got to the side. B Moving left to right within a period or upward within a group, the first ionization energy generally increases
Explanation:
elect the correct answer.
Which atom or ion is the largest?
A.
K
B.
K+
C.
Ca
D.
Ca2+
E.
Li
Answer:
Ca2+ I'm not sure hahahahhahah
Answer:
Ca
hope it is helpful..
which of the following is unbalanced
A. SnO2 + H2 → Sn + 2 H2O
B. 2Na + 2H2O → 2NaOH + H2
C. N2O5 + H2O → HNO3
D. 2Fe + 3Cl2 → 2FeCl3
Answer:
The unbalanced chemical equation is;
C. N₂O₅ + H₂O → HNO₃
Explanation:
In balancing a chemical reaction equation, only the coefficients of the terms of the reactants and/or the products are adjusted (and not the subscripts to the atoms in the compounds) to ensure that the total number of each element is the same on either side of the arrow for the chemical reaction
A coefficient term is the number multiplier of the compounds and elements in a chemical reaction
Therefore, the balanced chemical equation is obtained by changing the coefficient of the product from the implied '1' to a '2' as follows;
N₂O₅ + H₂O → 2HNO₃
Name the following:
1. SF6
2. N2O4
3. Cl2O7
4. S2Cl2
Answer:
Solfuric Floride
Nitrodgen Oxide
Clorine oxide
Sulfur Cloride
Explanation:
IM A CHEMISTRY WIZ
Without the atmosphere, life on Earth would not be possible. Which of the following is NOT an explanation for how Earth’s atmosphere protects life on the planet?
A. It allows visible light to pass through completely.
B. It contains gases that filter out ultraviolet radiation.
C. It keeps Earth warm by trapping in heat.
D. It protects life from ultraviolet rays of light
Answer:
B
Explanation:
IM A CHEMISTRY WIZZZZ
:)
I hope u get full marks on your paper/test/quiz or whatever!
There is a 20 percent chance so stay positive!
Answer:
D
Explanation: ultraviolet rays are harmful to humans
I really need help on this question! Thank you so much!
Answer:
A. Empirical formula => C₂H₄O
B. Molecular formula => C₄H₈O₂
Explanation:
From the question given above, the following data were obtained:
Mass of C = 0.273 g
Mass of H = 0.046 g
Mass of O = 0.182 g
Molar mass of compound = 88 g/mol
A. Determination of the empirical formula of the compound.
C = 0.273 g
H = 0.046 g
O = 0.182 g
Divide by their molar mass
C = 0.273 /12 = 0.023
H = 0.046 /1 = 0.046
O = 0.182 /16 = 0.011
Divide by the smallest
C = 0.023 / 0.011 = 2
H = 0.046 / 0.011 = 4
O = 0.011 / 0.011 = 1
Thus, the empirical formula of the compound is C₂H₄O
B. Determination of the molecular formula of the compound.
Empirical formula = C₂H₄O
Molar mass of compound = 88 g/mol
Molecular formula =?
Molecular formula = [C₂H₄O]ₙ
[C₂H₄O]ₙ = 88
[(12×2) + (4×1) + 16]n = 88
[24 + 4 + 16]n = 88
44n = 88
Divide both side by 44
n = 88 / 44
n = 2
Molecular formula = [C₂H₄O]ₙ
Molecular formula = [C₂H₄O]₂
Molecular formula = C₄H₈O₂
What is this molecule an
example of?
A. an atom
B. a mixture
C. an element
D. a compound
PLEASE HELP ASAP
Answer:
D. Compounds
Explanation:
Because it's says that have 3 components
Match the general form of each reaction to it’s appropriate chenille reaction.
In photo
What volume of chlorine gas (Cl2), measured at STP, can be produced by the decomposition of 73.0g of hydrogen chloride gas (HCl), according to the balanced equation? (the other product is hydrogen gas (H2))
Answer:
Explanation:
2HCl = H₂ + Cl₂
2 mole 1 mole 1 mole
73 gram HCl = 73 / 36.5 = 2 mole of HCl
2 moles of HCl will produce 1 mole of chlorine gas .
At STP , one mole of chlorine gas has volume equal to 22.4 litre .
Will give Brainliest If Correct!
Which of the following best describes the distribution of the world’s food supply? Select all that apply.
Still unevenly distributed leaving millions starving to death.
Quickly changing to be evenly distribute based on humanitarian efforts.
Slowly changing to be slightly more evenly distributed based on humanitarian efforts.
Evenly distributed throughout the population of the world now.
Answer:
Slowly changing to be slightly more evenly distributed based on humanitarian efforts. Still unevenly distributed leaving millions starving to death.
Explanation: