The sun is made up of two main elements, hydrogen and helium.
Hydrogen makes up about 92% of all of the atoms in the sun while helium makes up about 7.8%. Oxygen, carbon, neon and nitrogen make up most of the remaining 0.2%.Hunter is copying an angle. His work so far follows. Explain the importance of his next step. Which is drawing A-line through A and Y using a straight edge
Answer:
its c ma man .
This is the other ray that will make up the angle ∠AYZ and will complete the constructioExplanation:
if your taking the quick check these were my awnsers
1.c
2.b
3.d
4.c
5 .A
for the copying an angle quick check only
Michael tells Sara he weighs 104 pounds. Sara says she is 44 kilograms. who is heavier?
Answer: Michael weighs more
Explanation: 44 kilos to pounds is around 97 pounds. hope this helps:)
How many pennies are in $2,020.20?
Answer:
202,020 pennies
Explanation:
The amount of pennies in 1 dollar is 100.
Basically, you just multiply the whole dollar amount (2020) by 100 and then add 20 to find the amount of pennies.
(2020)(100)+20= 202,000+20= 202,020 pennies.
Answer:
202,040 pennies
Explanation:
$1 is equal to 100 so just multiply 100 by 2,020 and then you can add the extra 20 cents
If the density of mercury is 13.6g/ml, what is the mass in grams of 3426 ml of the liquid?
A copper cylinder, 12.0 cm in radius, is 44.9 cm long. If the density of copper is 8.90 g/cm^3, calculate the mass in grans of the cylinder. (Assume pi=3.14
Answer:
Explanation:
Mass=density×volume
Mass=13.6g/ml×3426ml
Mass=46,593.6 g
Can water stay liquid below zero degrees Celsius?
Select the correct answer from each drop-down menu. An atom has 9 electrons and 9 protons at the start. If it loses 2 electrons, the net charge on the atom will be . If the atom instead gains 4 electrons, the net charge will be .
Answer:
If it loses to electrons the net charge will be +2. If the atom instead gains 4 electrons, the net charge will be -4.
Explanation: When an atom loses electrons( which are negatively charged), it turns into a cation. This means since there is more protons(which are positively charged) than electrons, the charge is positive. The charge is positive and than the number of electrons lost. It is the exact opposite for gaining electrons.
On analysis it was found that black oxide of copper and red oxide of copper contain 80% and 89% of copper respectively show that this data is in accordance to law of multiple proportions
Answer:
On analysis it was found that black oxide of copper and red oxide of copper contain 80% and 89% of copper respectively show that this data is in accordance to law of multiple proportions
On analysis it was found that black oxide of copper and red oxide of copper contain 80% and 89% of copper respectively show that this data is in accordance to law of multiple proportions
Explanation:
On analysis it was found that black oxide of copper and red oxide of copper contain 80% and 89% of copper respectively show that this data is in accordance to law of multiple proportions
On analysis it was found that black oxide of copper and red oxide of copper contain 80% and 89% of copper respectively show that this data is in accordance to law of multiple proportions
1. Convert 1m3 to cm3.
Answer:
1000000 cubic centimetre
Answer:
1m^3 = 1000000cm^3
Explanation:
why is air referred to as a mixture of gases
Answer:
Explanation:
air is considered as a mixture of gases because it contains many gases. They are :
78 % Nitrogen
21 % oxygen
And 1 % other gases
This image might help you
Hope this helps
plz mark as brainliest!!!!!!!!!!!
determine the rate of a reaction that follows the rate law: rate=k[A]m[B]n, where: k= 1x10-2 [A]=2 M B= 3 M m=2 n=1?
Answer:
0.12 molL‐¹ s‐¹
Explanation:
Whats 243 daL converted to L
Number of liters (L) = 2430 L, 243 decaliters (daL) is equal to 2430 liters (L).
To convert 243 decaliters (daL) to liters (L), you need to use the conversion factor: 1 decaliter (daL) is equal to 10 liters (L).
So, to convert from daL to L, you can use the following equation:
Number of liters (L) = Number of decaliters (daL) × Conversion factor
Number of liters (L) = 243 daL × 10 L/daL
Number of liters (L) = 2430 L
Therefore, 243 decaliters (daL) is equal to 2430 liters (L).
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Give me a sentence of hypothesis
Answer:a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
Explanation: Do you mean definition, because if you do here is the definition of a hypothesis, also it would help if you went into further detail of what the hypothesis is for.
Matter is anything that has volume and takes up space. True False
Answer:
true
Explanation:
true matter does have volume and takes up space
A sample of a substance has a mass of 4.2 grams and a volume of 6 milliliters. The density of this substance is___ grams/milliliter.
Answer:
Answer:- Density of the substance is 0.7
i believe
my baby mama hates me, what do i do?
Answer:
Buy her food
Explanation:
food always helps bro. trust.
Answer:
Just talk to her , maybe you did something in the past to hurt her ? Remember to think about the baby and if doesn't work out try to be good co parents together.
Explanation:
I am doing an exam test and I need help! I don't get this question at all! "What determines the chemical and physical properties of a mineral?" If you can answer less than 10 minutes that would be great! Thank you!
Answer:
A mineral is an inorganic solid substance formed naturally in the ground having a definite physical and chemical properties.
The internal atomic structure or arrangmenet of atoms of a mineral determines the chemical and physical properties of the mineral.
For example: diamonds and graphite, atmoic structure of diamond is rigid tetrahedral network providing chemical and physical properties of diamond.
Which describes a feature of synthetic polymers? They can be naturally decomposed. They can be cheaply recycled. They can only be made in small quantities. They can be produced at a low cost.
Answer:
The correct option is;
They can be produced at low cost
Explanation:
In comparison to several other manufacturing materials, some synthetic polymers such as plastics are more durable cost effective, flexible, faster to produce and reliable
With regards to the cost comparison, the resins used for plastic are cheaper to obtain than mining for materials such as metals. In all quantities, it is cheaper to produce and manufacture plastics than to produce metals.
Due to the light weight and corrosion resistance of plastics, it is cheaper to store and transport plastics to several locations with different environment without the plastic requiring much effort for transportation or being affected by corrosion.
Answer:
d
Explanation:
Which of the following is an example of an observation?
An observation is a major step in scientific experimentation that has to do with recording what is seen, heard, or felt.
What is observation?Observation is the process of acquiring information about phenomena using the sense organs.
Thus, one can observe by hearing, feeling, seeing, and record the outcomes accordingly.
Observation is a major part of the scientific method. Analysis of the information gathered from observation will enable scientists to come into proper conclusions.
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Write in standard notation: 3.2x 103
Answer:
3.2
10×10×10
=1000
so 3.2×1000
=3200
hello! for titration method , why is alkali used instead of bases?
Your question has been heard loud and clear.
Uhm , Alkalis are just bases who react with water. In titration we use water also , so we need bases that react with water , and such bases are alkalis.
Alkalis are a type of bases.
Thank you
What is produced/made when our food is burned? ____________ + ____________ + __________ *
Answer:
do you have any vocabulary to help you with this or no
which of the following resources can replenish themselves by quick recycling and replacement , within a reasonable time , if managed properly?
plz say the answer with explanation
options
A. coal
B. soil
C. natural gas
D. sunlight
Answer:
B
Explanation:
Among all the answers soil is the only renewable resource.
Both coal and natural gas are a non-renewable resource
Even though sunlight can be used for solar panels as a renewable resource but when the sun dies out from burning there is no replacement for it.
Hence, only answer is soil
Which do all cells need in order to function?
oxygen
water
carbon dioxide
offspring
Answer:
oxygen is needed for all cells to function
the hypothesis can be accepted because the electromagnet with the longer cooper wire had great strength
I uh- I'm a bit confused- W h a t
What effect do abiotic cycles have on ecosystems?
Abiotic cycles have a great impact on ecosystems. when the cycles occur more often, like the water cycle in the rainforest, the living organisms of the ecosystem respond appropriately since the organisms in the rainforest are adapted to the conditions of the abiotic cycles
Explanation:
what do you mean by atom?
Answer:
a very small particale of matter
Explanation: something small in matter called an Atom.
The reaction NO2(g) + CO(g) → NO(g) + CO2(g) has been found to be second order with respect to NO2 and zero order with respect to CO. At a certain temperature, the rate constant is found experimentally to be 3.0 × 10−5 L mol · s . What is the rate of formation
Answer:
The answer is " [tex]122.88 \times 10^{-5}[/tex]"
Explanation:
In the given question some data is missing. so, the correct solution can be defined as follows:
Missing values:
[tex]k= 3.0 \times 10^{-5}\\\\NO_2 =6.4 \ mol / l \\\\CO= 4.1 mol / l \\\\NO= 5.2 mol / l \\\\CO_2= 1.3 mol / l\\[/tex]
Given equation:
[tex]NO_2(g) + CO(g) \longrightarrow NO(g) + CO_2(g)[/tex]
In the above equation, the rate is [tex]=k.[NO_2]^2[/tex] because the above given is the part of the second-order, which relates to [tex]NO_2[/tex]. In the zeros order the Carbon monoxide (CO) its reaction doesn't affect the rate.
Calculating the rate:
Rate [tex]=k.[NO_2]^2[/tex]
[tex]= 3.0 \times 10^{-5} \times 6.4^2\\\\=3.0 \times 10^{-5} \times 40.96\\\\= 122.88 \times 10^{-5}\\[/tex]
Time Remaining: 1:27:31 If 50.0 g of H₂ and 100.0 g of O₂ react, how many moles of H₂O can be produced in the reaction below? 2 H₂(g) + O₂(g) → 2 H₂O(g
Answer:
Explanation:
2 H₂(g) + O₂(g) → 2 H₂O(g
2 moles 1 mole 2 mole
50 g of H₂ = 50 /2 = 25 moles of H₂
100 g of O₂ = 100 / 32 = 3.125 moles of O₂
So oxygen is the limiting reagent .
3.125 moles of O₂ will react with 6.25 moles of H₂ to give 6.25 moles of H₂O .
Hence moles of H₂O produced = 6.25 moles .
Which of the following choices are types of energy? (Select all that apply) A.kinetic energy B.physical energy C.thermal energy D.chemical energy
Answer:
kinetic, thermal and chemical not physical
The following are types of energy:
Thermal EnergyChemical EnergyKinetic EnergyMeaning of energyEnergy in physics is the ability to do work. Generally it can be said to be the strength, power or ability to do work.
Energy can be contained in a system, can be transformed and can be transfered.
different types of energy are needed in our day to day living.
In conclusion, the types of energy we have are the Thermal Energy, Chemical Energy, and Kinetic Energy etc.
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Can u guys please answer this
What plasma looks like on the molecular level?