Answer:
C would be the right answer
Answer:
B
Explanation:
I have a similar question and it was correct try B
What is the specific heat capacity of copper metal if 25.00 g loses 18 °C, when the metal is placed in 15 g of water and the water temperature rises 2.8 °C?
The specific heat capacity of copper metal : 0.390 J/g °C
Further explanationGiven
25 g metal
Δt metal = 18°C
15 g water
Δt water = 2.8 °C
Required
The specific heat capacity of copper metal
Solution
Q out = Q in
Q releases by metal = Q absorbed by water
m.c.Δt metal = m.c.Δt water(c water = 4.184 J/g °C)
25 x c x 18 = 15 x 4.18 x 2.8
c = 0.390 J/g °C
How many moles are in 1.204 x 10^24 molecules of Bromine
Answer:
2.2876e+24 or 2.2876000000000000000000000000 (same thing)
Explanation:
First we can do the exponents first
When there is an exponent on top of a number, it means that we need to multiply that number by the amount that the exponent says by itself.
10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 = .....
1E24 or 1,000,000,000,000,000,000,000,000
1,000,000,000,000,000,000,000,000 × 1.204 = ......
2.2876e+24 or
2.2876000000000000000000000000
~ 2.2876 r 2.288 or 2.28, or 2.3
Depends on how much you want to round it up to.
HELP 50 POINTS
You order a large sweet tea with no ice from
McDonalds You got distracted and didn't drink
it right away. About 30 minutes later, you take
a drink and it tastes the same as when you
got it
Example Description
Homogeneous/Heterogeneous ?
WHY?
Solution, Suspension
WHY?
You pick up a snow globe and shake it. A few
minutes later, all of the snow and glitter has
settled at the bottom
Example Description
Homogeneous/Heterogeneous ?
WHY?
Solution, Suspension
WHY?
Answer:
Heterogeneous
Explanation:
you dont remember no ice in it
A gas has a volume of 1.50mL at 1.89atm. What is the volume when the pressure is 2.75atm? What is the name of the gas law used to solve this problem?
Explanation:
.........................:)
The final volume of the gas at the final pressure can be determined using Boyle's law. The volume of the gas at a pressure of 2.75 atm is 1.03 ml.
What is Boyle's law ?Boyle's law states that, at constant temperature, the volume of a gas is inversely proportional to the pressure of the gas.
Hence, PV = a constant.
Let P1 and V1 be the initial pressure and volume and P2 and V2 be the final pressure and volume then we can write it as,
P1 V1 = P2 V2.
Given that, P1 = 1.89 atm
P2 = 2.75 atm
V1 = 1.50 ml
V2 = P1 V1 / P2
V2 = 1.89 atm × 1.50 ml/ 2.75 atm
= 1.03 mL.
Therefore, the volume of the gas at a pressure of 2.75 atm is 1.03 ml.
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Which volume of 4.00 x 10-2 mol/L solution
of barium nitrate, Ba(NO3)2(aq), contains
2.00 x 10-2 mol of nitrate ions?
0.25 L Barium nitrate solution contains 0.02 mol nitrate ions
Further explanationGiven
0.04 M Barium nitrate, Ba(NO₃)₂(aq)
Required
The volume of Barium nitrate
Solution
Ionization of Barium nitrate in 1 L solution :
Ba(NO₃)₂ ⇒ Ba²⁺ + 2NO₃²⁻
mol :
0.04 0.04 0.08
There is 0.08 mol of nitrate ions in 1 L solution
So for 0.02 mol nitrate ions :
= 0.02/0.08 x 1 L
= 0.25 L
3.5mL converted to cm
Answer:
3.5 cubic centimeters
Explanation:
2)A container has an unknown quantity of gas at a pressure of 61.6 kPa, a volume of 3.9 liters, and a temperature
of 90 °C, how many moles of gas do I have?
Answer:3
Explanation:
What type of severe weather is characterized by a lack of precipitation over a long period of time?
Answer:
Explanation:
A form of severe weather is drought, which is a prolonged period of persistently dry weather (that is, absence of precipitation).This can cause wild fires which impact the growth of trees.They cause the tree the release carbon dioixide rather than store!
If 4.59 g of potassium reacts with 3.6 g of sulfur according to the following reaction, how many grams of potassium sulfide can theoretically be produced? Please identify the limiting and excess reactants: 2K + S -> K^2S
1. All non-living components of an ecosystem form a(n)
A. biotic factor
B. ecosystem
C. biotic community
D. abiotic environment
Explanation:
[tex] { {.112201 \times \frac{?}{?} }^{?} }^{?} \times \frac{?}{?} \times \frac{?}{?} [/tex]
can someone help me plz
Apsidal precession—The major axis of Moon's elliptical orbit rotates by one complete revolution once every 8.85 years in the same direction as the Moon's rotation itself.
How can moisture in storms from Hawaii reach California?
Answer:
Atmospheric Rivers a.k.a. The pineapple Express
What are some possible replacements for Tin (Sn)?? Help ASAP!!!!!!!!
Answer:
Lead I think is one I'm not completely sure but I know they're similar in some ways
0/40
What is the volume of the two red spheres? (Hint: new
volume old volume)
6 ml
2 ml
4 ml
8 ml
Answer:
can you show me a picture of the two spheres thanks!!
use the periodic table to determine the molar mass of each of the following elements. Use the correct number of significant figures. Potassium
Answer: Potassium is 39.10 g/mol
Explanation: The numbers below the element are the molar mass.
Answer: Potassium(K): 39.10 g/mol
Explanation:
You start with 1 L of CO2 at standard temperature and pressure in a closed container. If you raise the temperature of the gas, the pressure will
Increase
Remain the same
Decrease
Answer:
Increase
Explanation:
According to Gay-Lussac Law,
The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.
Mathematical relationship:
P₁/T₁ = P₂/T₂
If the initial temperature and pressure is standard,
Pressure = 1 atm
Temperature = 273.15 K
then we increase the temperature to 400.0 K, The pressure will be,
1 atm / 273.15 K = P₂/400.0K
P₂ = 1 atm × 400.0 K / 273.15 K
P₂ = 400.0 atm. K /273.15 K
P₂ = 1.46 atm
Pressure is also increase from 1 atm to 1.46 atm.
I’ve been struggling could someone help ?
Answer:
Telophase
Explanation:
During telophase, a nuclear membrane forms around each set of chromosomes to separate the nuclear DNA from the cytoplasm.
I hope this helps! (If not, I am very sorry!)
if you needed to produce 2.5 moles of CO2 for your volcano, how much baking soda (NaHCO3) should be used (anwser in grams)
Answer: Help
Explanation:
.
To reach a decision in a criminal case, jurors must talk to the lawyers. review the evidence. question the witnesses. create final summaries.
Answer:
B. review the evidence
Explanation:
To reach decision in criminal case,jurors must review evidence as it may contain some important information which could help in decision such as investigation of hairs,nails, etc which contain DNA through which decision making would be easy.
What is DNA?DNA is a hereditary material which is present in human beings as well as all other living organisms. Every cell which is present in an organism's body has DNA which is the same. Most of the DNA is situated in the cell's nucleus and small amount of it can be found in the cell's mitochondria as well.
Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.
DNA bases are capable of pairing up with each other. Adenine pairs with thymine and guanine pairs up with cytosine .Each base is also attached to a sugar molecule and a phosphate group. A base, phosphate sugar are together called as nucleotides.
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Short leg trait would be transmitted to the next generation through????
Answer:
genes I believe???? like genes transmitted from past relatives
Which two organ systems work together to provide cells with oxygen and to remove carbon
dioxide from the body?
(5 Points)
Answer:
Lungs
Explanation: The two organ systems that work together to provide the cells with oxygen and remove carbon dixoide from the body are the lungs.
Circulatory system and Respiratory system work together to provide cells with oxygen and to remove carbon dioxide from the body. So, the correct options are (C) and (D).
What is Respiratory System ?Respiratory system is a biological system which consists of specific organs and structures. It helps to breathe. It consists of lungs, airways, blood vessels and some muscles with work together with lungs are also the part of Respiratory system. It helps to move out the oxygen throughout the body and helps to remove the carbon dioxide from the body.
Functions of Respiratory System:
1. It allows to smell
2. It delivers oxygen to the cell
3. It removes carbon dioxide from the body.
4. It protects the airways from the harmful substance.
The respiratory system has many different parts that work together to help you breathe. It includes:
1.Mouth and nose
2. Sinuses
3. Pharynx (throat)
4. Trachea (Windpipe)
5. Bronchial tubes
6. Lungs
Thus, Circulatory system and Respiratory system work together to provide cells with oxygen and to remove carbon dioxide from the body. So, the correct options are (C) and (D).
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how many molecules are in 100 grams of ammonia
Answer:
17.03052 or 17 for a whole number
Explanation:
Balance the equation for aluminum burning in oxygen to form aluminum oxide. ____Al + ____O2 ----> Al2o3
Answer:
4Al + 3O2 → 2Al2O3
Explanation:
HELPPP!! ASAP PLEASEEEEEE
The blank is the temperature at which a material changes from a liquid to a gas while the blank is the temperature at which a material changes from a solid to a liquid
If a reaction vessel initially contains 5 mol S and 10 mil O2, how many moles of S will be in the reaction vessel once the reactants have reacted as much as possible
Answer:
Explanation:
2S + 3O₂ = 2SO₃
2moles 3 moles
2 moles of S react with 3 moles of O₂
5 moles of S will react with 3 x 5 / 2 moles of O₂
= 7.5 moles of O₂ .
O₂ remaining unreacted = 10 - 7.5 = 2.5 moles .
All the moles of S will exhausted in the reaction and 2.5 moles of oxygen will be left .
PLEASE HELP!! I'LL MARK U BRAINIEST!! ALSO PLZ IF YOU CAN SHOW THE WORK
Answer:
9.63×10²⁴ particles of H₂O
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
CH₄ + 2O₂ —> CO₂ + 2H₂O
From the balanced equation above,
1 mole of CH₄ reacted to produce 2 moles of H₂O.
Next, we shall determine the number of mole of H₂O produced by the reaction of 8 moles of CH₄. This can be obtained as follow:
From the balanced equation above,
1 mole of CH₄ reacted to produce 2 moles of H₂O.
Therefore, 8 moles of CH₄ will react to produce = 8 × 2 = 16 moles of H₂O.
Thus, 16 moles of H₂O were obtained from the reaction.
Finally, we shall determine the number of particles of H₂O produced. This can be obtained as follow:
Number of mole of H₂O produced = 16 moles
Number of particles produced =?
From Avogadro's hypothesis,
1 mole = 6.02×10²³ particles
Therefore,
16 mole = 16 mole × 6.02×10²³ particles / 1 mole
16 moles = 9.63×10²⁴ particles
Therefore, 9.63×10²⁴ particles of H₂O were produced.
Write Four Facts About COMPOUNDS:
Convection currents are driven by differences in?
•Mass
•Volume
•Density
•Weight
Answer:
Density
Explanation:
The density, of a substance is its mass per unit volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume: {\displaystyle \rho ={\frac {m}{V}}} where ρ is the density, m is the mass, and V is the volume
Answer: Density
Explanation: Convection usually happens when an object heats up, which causes its density to change, such as a lava lamp.
When the wax in a lava lamp heats up, the wax's density decreases due to the energy from the heat, causing it to rise in the liquid to the top, where it cools down and becomes more dense, then falls back to the bottom.
balance
AI(NO3)3 +
H2SO4 →
Al2(SO4)3 +
HNO3
Answer:
2Al(NO3)3 + 3H2SO4 → Al2(SO4)3 + 6HNO3
Explanation:
i just looked up how to balance it, i dont really know how to balance it exactly
