Answer:
B. The reaction rate decreases
Explanation:
I just took the pre test and got a 100
Sulfur is a non metallic material that has a density of 2g/cm3. The volume of a sample of sulfur was measured to be 5.0cm3. What is the density of the wood?
question: Sulfur is a non metallic material that has a density of 2g/cm3. The volume of a sample of sulfur was measured to be 5.0cm3. What is the mass of the sulfur
Answer:
0.01 kg
Explanation:
Density: This can be defined as the ratio of mass of a body and it's volume. The S.I unit of volume is kg/m³.
Therefore,
Density = mass/volume
D = m/V......................................................... Equation 1
making m the subject of the equation
m = D×V ................................... Equation 2
Given: D = 2 g/cm³ = 2000 kg/m³, V = 5.0 cm³ = 0.000005 m³
subtitute into equation 2
m = 2000×0.000005
m = 0.01 kg or 10 g
Brooke decides to model a lunar eclipse. She attaches a large poster of the Sun to her wall to represent the Sun. She then decides that her head will represent Earth, and the direction she is facing will indicate the direction an observer on Earth is facing. She will then hold a small ball in her hand to represent the Moon. In order to model a person watching a lunar eclipse, Brooke faces the "Sun," stretches out her hand, and faces the "Moon" in front of her. What aspect of Brooke's model should be corrected?
A. Brooke should turn so that the Sun is on her right, and hold the Moon to her left.
B. Brooke should turn so that her back is to the Sun, and hold the Moon behind her.
C. Brooke should turn so that the Sun is on her left, and hold the Moon in front of her.
D. Brooke should turn so that her back is to the Sun, and hold the Moon in front of her.
PLEASE HELP ITS A TEST :(((
Answer:
its D
Explanation:
Brooke should turn so that her back is to the Sun to her wall, and hold the Moon (ball representing Moon) in front of her. Therefore, option (D) is correct.
What is a Lunar eclipse?The eclipse of the moon occurs when the earth comes in between the sun and the moon. The earth blocks the light coming from the sun from reaching the surface of the moon and casts its shadow on the moon.
A lunar eclipse occurs on a full moon day and can be observed up to 3 lunar eclipses per year. A lunar eclipse can be categorized depending on how the sun, the moon, and the earth line up.
A partial lunar eclipse is when only a part of the moon moves into the shadow's earth. A total lunar eclipse is when the earth crossed directly in front of the moon and casts its shadow.
If Brooke's head is earth then it will be in the center and her back will be towards to sun poster on the wall. So that the ball in her hand can play as a moon to show the lunar eclipse.
Learn more about the Lunar eclipse, here:
https://brainly.com/question/12075389
#SPJ6
How many oxygen atoms are in 163 g of aluminum sulfate? 
Answer:
3.44 × 10²⁴ atoms of oxygen
Explanation:
Step 1: Calculate the moles corresponding to 163 g of Al₂(SO₄)₃
The molar mass of Al₂(SO₄)₃ is 342.15 g/mol.
163 g × 1 mol/342.15 g = 0.476 mol
Step 2: Calculate the molecules in 0.476 moles of Al₂(SO₄)₃
We will use Avogadro's number: there are 6.02 × 10²³ molecules of Al₂(SO₄)₃ in 1 mole of Al₂(SO₄)₃.
0.476 mol × 6.02 × 10²³ molecules/1 mol = 2.87 × 10²³ molecules
Step 3: Calculate the atoms of O in 2.87 × 10²³ molecules of Al₂(SO₄)₃
According to the chemical equation, the molar ratio of Al₂(SO₄)₃ to O is 1:12. The atoms of O are 12/1 × 2.87 × 10²³ = 3.44 × 10²⁴.
HELP I WILL GIVE BRAINLY FOR THE CORRECT ANSWER 1. Write the correct formula for the ionic compound formed between atoms of each of the following pairs of elements
.a. Sodium and sulfurb.
Aluminum and nitrogenc.
Barium and fluorined.
Sodium and phosphatee.
Calcium and hydroxidef.
Ammonium and carbonate
What is period? A group?
PLSSSSSS HURRYYYYYYYY
Which of these systems can be explained by Newton’s laws of motion and gravitation?
SELECT ALL THAT APPLY
A.the motion of a race car on a racetrack
B.the motion of Earth around the Sun
C.the motion of a ball falling on Earth
D.the motion of electrons in an atom
Answer:
B,D.
Explanation:
Answer:the motion of Earth around the Sun , the motion of Earth around the Sun , ,
the motion of electrons in an atom
Explanation:
Which circuit hook-up design will have the brightest light bulb?A - 1 battery 1 bulb, B - 2 batteries 1 bulb, C - 3 batteries one bulb, D 2 batteries the bulb is on the other end, E 1 battery and 1 bulb on the other end
Question 5 options:
A
B
C
D
E
Heres another for you guys!
Answer:
I believe it is E because the battery has a wire, a power source(the battery), and a bulb connected together thus making a full series circuit. Furthermore, the more batteries they are to a series circuit, the more dimmer the light bulbs will be.
What is “rounding up”?
It makes the number simpler by putting it up to the next ten ex. 37 will be rounded up to 40
Is it technically correct to call ionic compounds molecules?
Answer:
uh yeah I think so technically
Answer:
no
Explanation:
which one of the following groups are decomposers a. algae b. protist c. fungi d. green plants e. photosynthetic bacteria?
Answer:
c. fungi
Explanation:
Decomposers are organisms that breaks down dead and decaying matter in nature. They derived their nourishment by breaking down other complex organic matter.
Fungi are a group of organisms that are mainly decomposers.
They recyclers in nature.
Green plants and photosynthetic bacteria are similar in that they obtain nourishment by the use of light to initiate the reaction between carbon dioxide and water.
Many protists are decomposers but not all.
Physical is to chemical as size is to ???
Answer:
Physical is to chemical as size is to length
Explanation:
That's for if your looking for the synonym of size. (i dont really know what your asking, but if your looking for the opposite of size than its length.)
14 steps decay series
Which of the following happens to a molecule of an object when the object is cooled?
Answer: It loses kinetic energy.
What if I’m not really living just surviving
instructions for #4-5, balance each equation after substituting symbols and formulas for words, remembering to include abbreviations for the physical state.
For subscripts, just make sure the number is in the right location in the compound formula.
4. Iodine crystals react with chlorine gas to form solid iodine trichloride.
5. Solid sodium bicarbonate reacts with hydrochloric acid [HCl (aq)] to produce aqueous sodium chloride, water, and carbon dioxide gas.
Answer:
Ok:
Explanation:
4.
[tex]I_2_{(s)} + 3Cl_2_{(g)} => 2ICl_3{(s)}[/tex]
5.
[tex]NaHCO_3_{(s)} + HCl_{(aq)} => NaCl_{(aq)} + H_2O_{(l)} + CO_2_{(g)[/tex]
A gas occupies 20 liters at a pressure of 40.0 mm hg. What is the volume when the pressure is increased to 80.0 mm hg?
Answer:
10 LExplanation:
The new volume can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
From the question we have
[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]
From the question we have
[tex]V_2 = \frac{40 \times 20}{80} = \frac{800}{80} = 10 \\ [/tex]
We have the final answer as
10 Lhope this helps you
Dipole-Dipole forces are attractive forces
between the dipole of one molecule and
the dipole of another.
a.
Positive, positive
b. Negative, neutral
c. Neutral, neutral
d. Positive, negative
PLS HELPP!!!
i’ll mark brainliest + 15 points!!
If 2.5 grams of calcium bromide reacted with excess lithium oxide, how many grams of bromide product would be formed?
Synthesis
Decompisition
O Combustion
O Single Displacement
O Double Displacement
Answer:
Synthesis
Explanation:
Nothing else works
which personal trait do scientists mainly depend upon when they design an experiment
Answer:
creativity is the personal trait that scientists mainly depend upon when they design an experiment.
PLEASE HELP I added some food coloring to some water. The water changed color, but
It's still the same water that I can drink. This is an example of ??
A. Chemical Change
B. Physical Change
Answer:
its definitely a physical change as the way you see it now is different then before
Answer:
b
Explanation:
because it changed colors
If alcohol has a density of 0.84 g/ml, would it float or sink in a cup of water (density of 1.00 g/ml)?
Denser materials will always sink below less dense materials.
So in this case, the alcohol would float since it has a lower density.
when 45mL of 0.25mol/L sulfuric acid is mixed w/ 25mL of 0.58mol/L Calcium hydroxide, the solution has a?
When you drop things into bodies of water, some things sink and some things float. What determines this?
Answer: how dense the object is and if it has air in it.
Explanation:
Answer:
Density determines the situation.
The denser the body than water, it sinks in water
The less dense the body than water, it floats on water.
Cobalt-60 decays into nickel-60 via beta decay with a half-life of 5.27 years. A purse sample of cobalt-60 is prepared, with no contamination of other isotopes. After 5.27 years, what is the ratio of cobalt-60 to nickel-60 in the sample?
Answer:
1:1
Explanation:
Since that is it's half life.
Carbon Monoxide is a toxic gas that is colorless and tasteless. How many moles of CO are in 1 L of the gas at STP?
28 moles
0.045 moles
22.4 moles
0.224 moles
Answer:
0.045 moles
Explanation:
Given data:
Moles of CO = ?
Volume of gas = 1 L
Temperature and pressure = standard
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
n = PV/RT
n = 1 atm× 1L / 0.0821 atm.L/mol.K × 273 K
n = 1 atm.L / 22.41 atm.L/mol
n = 0.045 mol
What is the conversion for 2.0 m + 3.33 m + 4 m =
Answer:
933/100
9.33m
....... . . . . .. .. .
What factors determine the amount of chemical energy an object has?
Answer:
The chemical energy in a substance is determined by the potential energy of the bonds of the products formed when it reacts
Explanation:
APE X What is happening to particles of matter while a change of state is taking place?
a. They are staying at the same speed
b. They are multiplying in number
c. They are slowing down
d. They are speeding up
Answer:
a. They are staying at the same speed
Explanation:
IF CORRECT PLSPLSPLS GIVE BRAINLIEST WOULD APPRECIATE :)
Answer:
a. They are staying at the same speed
Fun fact! <3
An apple, potato, and onion all taste the same if you eat them with your nose plugged
Answer:
:O Fr? Bet let me go get them lol
✧ Yes, since one of our senses are missing we won't really detect the taste.
Explanation: Think about it, we usually smell food and we can already tell if it's going to taste good or not. Looking or touching food doesn't always help to know if we will like the taste. ✧
