Answer:
index fossils are important for index fossils because
they use them to match up rock layers in certain locations
that may be far apart!
they are ALSO important to scientists because it helps them with relative age.
Explanation:
13. What is Delta G for the reaction N2(g) +O26) -- 2NO where Delta S = 0.02442 kJ/K at
303.0 K and AH = 180.7 kJ. Use Delta G = Delta H - TDelta S.
A. 173.3 kJ
B. 7.399 kJ
C.-173.3 kJ
D. 258.87 kJ
Answer:
9
Explanation:
i think
how can i solve this question? can you pls help me
Answer:
what's the question ?
Given the following equation:
8 Fe + S8 ---> 8 FeS
What mass of iron is needed to react with 106.0 grams of sulfur?
Answer27.9 gFeS
Explanation:
Note: This is for 16.0 Grams of Sulfer
Use the words Mercury, Venus, Earth or Mars to fill in the blanks
Answer:
Earth is the only planet with plate tectonics
Mars is the most heavily cratered planet
Mercury is the only planet that has virtually no atmosphere
Mars has an atmosphere that is about 1% as dense as Earth's
Venus has an extremely dense atmosphere
Venus rotates in the opposite direction of the other planets
Venus is the most volcanically active planet
and Earth have sedimentary rock formations
Earth has a strong magnetic field
Mars had oceans in the past :3
Explanation:
:3
CHEMISTRY HELP USING GAS LAWS
A 75.0 mL sample of sulfur dioxide gas exerts 200. mm Hg pressure at 30.0°C. What pressure in mmHg does it exert at 35.0°C if the volume expands to 80.0 mL?
Answer:
is there choices to choose from u can provide me?
neeeeeed helpppppp will give brainiest
Answer:
I think it is c
Explanation:
When water turns into water vapor it goes into the air so it must be lighter
Answer:
5
Explanation:
2. How would type of substance affect the rate of reaction?
Provide a brief description of how the respiratory system works
Answer:
The lungs and respiratory system allow oxygen in the air to be taken into the body, while also letting the body get rid of carbon dioxide in the air breathed out. When you breathe in, the diaphragm moves downward toward the abdomen, and the rib muscles pull the ribs upward and outward.
Explanation:
What is the mass in grams of 5.90 moles of aluminum. AI?
Answer:
159.3 grams Al
Explanation:
1 Mol of Al = 27 grams, so:
5.9 Mol Al (27g/1mol) = 159.3 grams Al
The Mol gets canceled out, leaving the unit of grams.
Which of the following is NOT true about the role tectonic forces play in the rock cycle?
1. When plates pull apart, rocks melt, and magma forms igneous rocks.
2. When plates crash together, rocks are buried and form metamorphic rocks.
3. When plates slide over & under each other, the heat & pressure form igneous rocks.
4. When rocks push upward & form mountains, the erosion of the mountains can produce sediment.
Answer:
i believe it is number #3
Explanation:
hope this helps
HELP PLEASEE LKSJAKN I BEG U
Answer:
1.2
Explanation:
HELP ASAP!!!
can someone help be determine the formulas for reactants and products as well as balance the equation, and what type of reaction is presented!!!!
I will make you the brain list!!!
Answer: owa owa
Explanation: owa owa owa owa
Copper carbonate decomposes to make _____________ oxide and _____________ dioxide
Answer:
Copper carbonate decomposes to copper oxide and carbon dioxide.
Explanation:
Calculate the net force of the problem below and determine the direction it will travel
Answer:
Where is the Net force u were supoose to put below we cant anwser with nothing being displayed
Explanation:
Answer: need more info
Explanation:
Which element was first discovered in space before it was discovered on Earth?
nitrogen
helium
carbon
hydrogen
Answer:
carbon
Explanation:
Answer:
carbon was discovered in space before on earth
1. What is the unit for electrical
conductivity?
Answer:
Siemens Per
Explanation:
S/m(Siemens per meter).
Answer:
The unit for electrical conductivity, is Siemens per meter in SI units. S/m
If a scale floated by and an astronaut stood on it, what would the scale say?
1.0kg
2.1/6 normal weight
3.9.8 m/s2
4.1/6 normal mass
how many atoms of argon gas are in 137 ml container at the pressure in the container is 8.80 X 10^5 mmhg and the temperature to 794 K
Answer:
#Ar atoms = 1.47 x 10²²
Explanation:
PV = nRT => n = PV/RT
P = 8.80 X 10⁵ mmHg = 8.80 X 10⁵ mmHg/760mmHg·atm⁻¹ = 11.58atm
V = 137ml = 0.137 Liter
n = ? moles Ar = ? moles Ar x 6.02 x 10²³ Atoms Ar/mole Ar
R = 0.08206 L·atm/mol·K
T = 794K
PV = nRT => n = PV/RT = 11.58atm·0.137L / 0.08206L·atm/mol·K·794K
=> n = 0.0243mole Ar = 0.0244mole Ar x 6.02 x 10²³ atoms Ar/mole Ar
= 1.47 x 10²² atoms Ar
Which hand is negatively charged? Ο Α. OB. Oc. OD.
Answer:
it would be OA that is negatively charged
I
Solid iron(III) oxide is produced when hot iron filings are exposed to pure
oxygen gas.
How many mm Hg is 9 atms?
6840.00 mmHg
(Please mark me brainliest! thank you in advance!!)
PLEASE HELL QUICKLY I WILL MARK BRAINLIEST
Answer: b is the answer
which one of these in not a principle of cell theory
Answer:
The correct answer is D) Only cells containing mitochondria can reproduce.
Explanation:
Cell theory mainly states that every organism present on this earth are made up of cell and the cell is the basic and smallest unit from which life is made up of. It also states that all the new cell that comes into existence are evolved from the old(pre-existing) cells.
Therefore any cell that contain or do not contain mitochondria can reproduce because new cells come from an old cell not from mitochondria, for example, a bacterial cell does not have mitochondria but they reproduce by binary fission.
Therefore any cell which is living can reproduce so the principle which is not currently understood is D) Only cells containing mitochondria can reproduce.
What is the volume of 80 grams of gold?
Answer:
Volume of 80 grams of Gold
centimeter³ 4.14 milliliter 4.14
foot³ 0 oil barrel 2.6 × 10-5
Imperial gallon 0 US cup 0.02
inch³ 0.25 US fluid ounce 0.14
liter 0 US gallon 0
meter³ 4.14 × 10-6 US pint 0.01
metric cup 0.02 US quart 0
metric tablespoon 0.28 US tablespoon 0.28
metric teaspoon 0.83 US teaspoon 0.84
I am a celestial body that does not produce light. I orbit a planet
The average human heart beats 2.5 billion times in a lifetime. The average lifespan is 78 years. What is the average heart rate?
SHOW YOUR WORK!!!!!!
what happens when you but a wire near oil
the wire would be damaged! oil damage to cables can be severe and will ultimately result in cable failure, downtime, and replacement costs.
:) hope this helps
Which of the following is an example of a parasite?
a. A flea that bites an animal and sucks its blood to survive.
b. An orchid flower that sits on a tree branch
c. The bacteria that live in human intestines and help humans digest things.
d. An Egyptian plover that cleans a crocodile's teeth.
hmm helpo?
Answer:
a sorry if im wrong
Explanation:
Identify the product(s) of the following reaction:
H
2
2
CO
3
3
→ H
2
2
O + CO
2
2
A
H
2
2
CO
3
3
B
H
2
2
and O
3
3
C
H
2
2
O and CO
2
2
D
O and O
2
2
Answer:
H20
Explanation:
means water but might not help
Which represents the greatest mass of fluorine?
there is no image so there's no way for me to know an answer
Answer:
You need to add a image for me to answer it love