Answer:
gas production
Explanation:
Answer:
gas formation
Explanation:
frothy bubbles produced by carbon dioxide gas are a sign that a chemical reaction has occurred when a based is mix with acid.
Name the following parts:
A—-
B——
C——
What science should i take in highschool? (Biology,Chemistry,Physics)
Answer:
Biology
Explanation:
I'm currently taking highschool biology right now and it's a lot of fun. If you like animals and cells, a lot of fun.
What is a speed of 55 mph equivalent to in units of m/s? (1 mile = 1609 m, 1 hour = 3600 s)
Answer:
24.58 m/s
Explanation:
Given that,
Speed of an object = 55 mph
We need to find the equivalent unit in m/s
We know that,
1 mile = 1609 m
1 hour = 3600 s
So,
[tex]55\ mph=\dfrac{55\times 1609\ m}{3600\ s}\\\\=24.58\ m/s[/tex]
So, the required speed is 24.58 m/s.
If you used .010 moles of baking soda, what mass of carbon dioxide should be produced?
Answer:
d
Explanation:
What kind of information does this map show?
A. The roads that connect different cities
OB. The shapes of different landforms
O C. The elevation of Earth's surface features
D. The natural resources found in different areas
Which statement best explains the net transfer of energy that is about to
happen in this photo?
A. The racket and the ball will both gain kinetic energy.
B. The ball will gain kinetic energy, and the racket will lose kinetic
energy
C. The racket will gain potential energy, and the ball will lose kinetic
energy
D. The racket and the ball will both lose potential energy
Answer:
Explanation:
B I got it right
Answer:
B. The ball will gain kinetic energy, and the racket will lose kinetic
energy
Explanation:
Can someone help me on this please
Answer:
the answer for 5 is liquid
A process in which substances chemically rearrange to form new substances
Molecule
Energy
Organism
Chemical reaction
Matter
Cellular respiration
Answer:
Chemical reaction
Explanation:
After new substances are formed they can't be reversed to their original state.
(b) 28.2 yd to centimeters
Answer:
2578.608 centimeters in 28.2 yards.
Explanation:
There are 91.44 centimeters to a yard. Multiplying 91.44 by the number of yards, we get the number of centimeters per yards.
91.44(28.2) = 2578.608
Answer:
hruejhehee7 suhdbdudud d d
Explanation:
jejeij3j3n3jeij
Which of these is an example of water in liquid form
Answer:
???????????????????????
Answer:
river or lake
Explanation:
What is responsible for an inherited trait? a. Environment b. Cells C. Dna d. Nutrition
Answer:DNA
Explanation:Dna
PLSS HELP I GIVE BRAINLIEST
Answer:
you r correct it is layer a and b
Explanation:
What are the two main types of energy?In an illustration, lines of force are drawn around a magnet to illustrate the magnetic
A boat covers 2,000 meters in 30 minutes. How fast are they traveling
The beakers in the picture above are labeled according to the ionic solutions they contain. What metal or metals could replace copper in the copper(II) nitrate solution?
Explanation:
When a metal replaces another metal in solution, we say such a reaction has undergone a single displacement reaction.
In such a reaction, metal higher up in the activity series replaces another one due to their position.
To known the metal or metals that will replace the given copper, we need to reference the activity series of metals.
Every metal higher than copper in the series will displace copper from the solution.
So, there metals are: potassium, sodium, lithium, barium, strontium etc.
What type of compound is AIN?
Answer:
aluminum nitride
Explanation:
i think
0. Earth's rock is continually cycling through different states and locations. The diagram below shows the rock cycle. The labels for two processes are missing.
Weathering of
ROCKS at surface
IGNEOUS
ROCK
Uplin
SEDIMENTARY ROCK
METAMORIHIC ROCK
Melting
Which of these processes could be happening at the stage labeled 2?
o folding and mountain building
chemical changes due to heat and pressure
compaction and cementation of weathered sediments
subduction of an oceanic plate beneath a continental plate
Answer:
Chemical changes due to heat and pressure
Explanation:
Just took the test, hope this helps! :)
Answer:
Chemical changes due to heat and pressure
Explanation:
I took this test and got a 100%! :D
A compound was analyzed and found to contain the following percent composition: 2.056% hydrogen, 32.69% S, and 65.26% oxygen. Calculate the empirical formula.
Answer:
H2SO4
Explanation:
Firstly,
2.056% hydrogen = 2.056g of H
32.69% Sulphur = 32.69g of S
65.26% oxygen = 65.26g of O
Next, we convert each mass into moles by dividing by their respective molar mass:
H = 1, S = 32, O = 16
H = 2.056/1 = 2.056mol
S = 32.69/32 = 1.021mol
O = 65.26/16 = 4.078mol
Next, we divide each mole value by the smallest mole value (1.021)
H = 2.056/1.021 = 2.01
S = 1.021/1.021 = 1
O = 4.078/1.021 = 3.99
Approximately the ratio of H to S to O is 2:1:4, hence, the empirical formula for H, S and O is H2SO4.
The empirical formula of a chemical compound is the simplest whole-number ratio of atoms present in a compound
The correct answer of the following is [tex]H_2SO_4[/tex]
The data is given as follows:-
2.056% hydrogen = 2.056g of H 32.69% Sulphur = 32.69g of S65.26% oxygen = 65.26g of O
We have to find the moles in the reaction.
The mas of the element is as follows:-
H = 1S = 32O = 16
After solving the equation we get
[tex]H = \frac{2.056}{1} = 2.056mol\\\\S = \frac{32.69}{32} = 1.021mol\\\\O = \frac{65.26}{16} = 4.078mol[/tex]
Next, we divide each mole value by the smallest mole value (1.021)
[tex]H = \frac{2.056}{1.021} = 2.01\\\\S = \frac{1.021}{1.021} = 1\\\\O = \frac{4.078}{1.021} = 3.99[/tex]
The ratio of H to S to O is 2:1:4,
Hence, the empirical formula for H, S, and O is [tex]H_2SO_4.[/tex]
For more information, refer to the link:-
https://brainly.com/question/15804584
30 PTS!! chemistry - a new element chemistry TCT
Answer:
so is this a project or a quiz
5. Determine if each statement is true or false about forming a hypothesis:
a. It must be long.
b. It is an educated guess.
c. It is in if…then format.
d. It must be testable.
e. It must start with I think.
What human activities could increase erosion?
Check all that apply.
stripping the land of vegetation to build a mall
letting cattle overgrazing farmland
planting trees and shrubs
surrounding a corn field with a fence or shrubs
deforestation
plowing fields
I think it is the first one, the second one, and the fifth one. Hopefully helps :)
Metamorphic rock is formed from the weathering, erosion and cementing of sediments.
True
False
Answer:
False
Explanation:
Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.
This question is reffering to sedimentary rocks, so it's false.
Answer:
Weathering (breaking down rock) and erosion (transporting rock material) at or near the earth's surface breaks down rocks into small and smaller pieces. When the molten rock cools it forms an igneous rock. Metamorphic rocks can form from either sedimentary or igneous rocks.
Explanation:
True
A small bubble rises from the bottom of a lake, where the temperature and pressure are 8°C and 6.4 atm, to the water's surface, where the temperature is 25°C and pressure is 1.0 atm. Calculate the final volume (in ml) of the bubble if its initial volume was 2.1 ml.
a. 0.070 ml
b. 21 ml
c. 14 ml
d. 42 ml
Answer:
b
Explanation:
Calculate the percent composition of Fe in Fe(OH)3
Answer:
52.257%
Explanation:
A mass of a gas occupies 840cm cube at 750mm pressure, what volume would it occupy at 780mm pressure
The final volume : 807.69 cm³
Further explanationGiven
Initial volume : 840 cm³
Initial pressure : 750 mmHg
Final pressure : 780 mmHg
Required
The final volume
Solution
Boyle's Law
At a fixed temperature, the gas volume is inversely proportional to the pressure applied
[tex]\tt p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}[/tex]
Input the value :
V₂=(P₁V₁)/P₂
V₂=(750 x 840)/780
V₂=807.69 cm³
what displays the number of atoms, nature and bond types in organic compounds
Answer:
Structural formula
Explanation:
Various type of formulae describe an organic compound. The empirical formula only shows the ratio of atoms of each element present. The molecular formula shows the exact number of atoms of each element present.
Lastly, the structural formula shows us the arrangement of these atoms in space. It shows us the number of atoms, nature and bond types in organic compounds.
The structural formula enables us to picture what the real molecule must look like.
Brainliest for an answer!
2 As (s) + 6 NaOH (aq) → 2 Na3AsO3 (s) + 3 H2 (g)
If 34.0g of As react with excess NaOH at STP, what volume of H2 will be produced in liters?
If you can answer this question quickly, I will mark you brainliest, I'm stumped to be honest.
The volume of H₂ : = 15.2208 L
Further explanationGiven
Reaction
2 As (s) + 6 NaOH (aq) → 2 Na₃AsO₃ (s) + 3 H₂ (g)
34.0g of As
Required
The volume of H₂ at STP
Solution
mol As (Ar = 75 g/mol) :
= mass : Ar
= 34 g : 75 g/mol
= 0.453 mol
From the equation, mol ratio As : H₂ = 2 : 3, so mol H₂ :
=3/2 x mol As
=3/2 x 0.453
= 0.6795
At STP, 1 mol = 22.4 L, so :
= 0.6795 x 22.4 L
= 15.2208 L
The diagram shows heat energy being transferred as hot water rises to the top of the pot and cool water sinks to the bottom.
water cools
cool
water
sinks
cool
water
hot
sinks
water
rises
What process is shown in the diagram?
A conduction
B. convection
O c Insulation
O D. radiation
List and describe all five types of chemical reactions. thx.
Answer:
combination, decomposition, single-replacement, double-replacement, and combustion.
Explanation:
How many moles of H 2 will I need to make 5 moles of NH3?
12 SSO
Answer:
7.5 moles of hydrogen is required
Explanation:
Given data:
Number of moles of H₂ needed = ?
Number of moles of NH₃ = 5 mol
Solution:
Chemical equation:
N₂ + 3H₂ → 2NH₃
Now we will compare the moles of ammonia and hydrogen.
NH₃ : H₂
2 : 3
5 : 3/2×5 = 7.5 mol
Thus, 7.5 moles of hydrogen is required.
