Answer:
Silver nitrate (AgNO3) reacts with potassium chloride (KCl) and a white precipitate is formed.
Explanation:
Answer:
silver nitrogen I think that is one
555mL of gas is combined at standard temperature and pressure(STP). The volume changes to 660.mL at 30.5 °C. What is the new pressure(atm)?
Answer:0.94
Explanation:
How many ml are in 3,764liters?
Hint: ‘mili’ means a thousandth (1/1,000)
Round your answer to the nearest whole number
Answer:
Your answer I think would be 3,764,000 .If Im wrong please correct me and comment below.
I got my answer by converting 3,764 liters to millileters using a converter calculator
then I rounded it to the nearest whole number using the rounding calculator from calculator soup. This has worked for me in the past.
Hope this helps, good luck!
please help balance
_Ch7H16+_O2=_CO2+_H2O
Answer:
C7H16 + 11 O2 → 7 CO2 + 8 H2O
This is an oxidation-reduction (redox) reaction:
7 C-16/7 - 44 e- → 7 CIV (oxidation)
22 O0 + 44 e- → 22 O-II (reduction)
C7H16 is a reducing agent, O2 is an oxidizing agent.
Reactants:
C7H16
O2
Names: Dioxygen source: wikidata, accessed: 2019-09-07, Oxygen source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-07, Oxygen (liquefied) source: ICSC, accessed: 2019-09-04
Appearance: Odourless compressed gas source: ICSC, accessed: 2019-09-04; Liquefied gas. colourless-to-blue extremely cold liquid source: ICSC, accessed: 2019-09-04
Products:
CO2
Names: Carbon dioxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, {{plainlist| source: wikipedia, accessed: 2019-09-27, CO2 source: wikidata, accessed: 2019-09-02
Appearance: Colorless gas source: wikipedia, accessed: 2019-09-27; Odourless colourless compressed liquefied gas source: ICSC, accessed: 2019-09-04; Colorless, odorless gas. [Note: Shipped as a liquefied compressed gas. Solid form is utilized as dry ice.] source: NIOSH NPG, accessed: 2019-09-02
H2O – Water, oxidane source: wikipedia, accessed: 2019-09-27
Other names: Water (H2O) source: wikipedia, accessed: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed: 2019-09-27, Hydrogen oxide source: wikipedia, accessed: 2019-09-27
Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed: 2019-09-27
Search by reactants (C7H16, O2)
1 O2 + C7H16 → H2O + CO2
2 O2 + C7H16 → H2O + CO
3 O2 + C7H16 → H2O + CO2 + CO
4 O2 + C7H16 → H2 + CO2
Search by products (CO2, H2O)
12345678910...
1 HCl + CaCO3 → H2O + CO2 + CaCl2
2 HCl + NaHCO3 → H2O + CO2 + NaCl
3 O2 + CH4 → H2O + CO2
4 NaHCO3 → H2O + CO2 + Na2CO3
5 H2SO4 + KMnO4 + (COOH)2 → H2O + CO2 + K2SO4 + MnSO4
6 O2 + C3H8 → H2O + CO2
7 H2SO4 + K2CO3 → H2O + CO2 + K2SO4
8 O2 + C2H6 → H2O + CO2
9 CH3COOH + NaHCO3 → H2O + CO2 + CH3COONa
10 HCl + Na2CO3 → H2O + CO2 + NaCl
12345678910...
Search by reactants (C7H16, O2) and by products (CO2, H2O)
1 O2 + C7H16 → H2O + CO2
2 O2 + C7H16 → H2O + CO2 + CO
Explanation:
Near the equator, the sun heats the surface strongly, causing warm air to rise steadily. This creates the _________________, an area of _________________pressure with very little wind.
Your answer:
horse lattitudes, high
horse latitudes, low
doldrums, high
doldrums, low
PLEASE ANSWER ASAP!!!!! 50 points! :
You have an aquarium with a volume of 100 liters. The tank is generally used to hold water. This tank, however, is filled with fine sand. You also have measuring spoons, the smallest of which holds a volume of 1 milliliter. How can you use one or more measuring spoons to count the grains of sand in the aquarium? Write your ideas for counting the sand grains using the measuring spoon. Decide if the idea would lead to an exact count or an estimate. Suggest how you could improve your ideas. What assumptions are necessary for your procedure for counting sand grains to be reasonable? Explain your reasoning. How does your method of counting a large volume of sand grains compare to the task of counting atoms in a sample of matter?
Answer:
first, find the density of sand grains by using a small weighing scale. put at least 10 measuring spoons of sand on the scale. calculate the density by its formula d = m/v. this result can count the volume whole sand grains based on its weights
You can count the grains of sand ( estimated value ) by ; determining an estimate of the density and mass of the sand grains in the aquarium.
Since the volume of the tank = volume of the sand therefore the volume of the sand grains in the aquarium will be 100 liters, next is to determine the mass of the sand grains by using a weighing scale to take the mass of at least 20 measuring spoons of sand.
Find the density of the sand grains using the formula for determining, Density = mass / volume . with this result, We can determine an estimate of the number of sand grains with results gotten from the density and mass of the sand grains
To determine the number of atoms in a sample matter we also determine the mass and density of the matter just as with the counting of sand grains in the tank. which we can then use to determine an estimate of the number of atoms contained in the matter.
Hence we can conclude that you can count the grains of sand ( estimated value ) by; determining the density and mass of the sand grains in the aquarium.
Learn more : https://brainly.in/question/32356304
what are some non living factors that you need in a habitat?
Answer:
You depend on each other and need the nonliving things in your home, like food, water, air, and furniture. Living things need nonliving things to survive. Without food, water, and air, living things die. Sunlight, shelter, and soil are also important for living things.
Explanation: i dunno if this is right or not ;-; but i tried UnU
If 70 grams of sodium carbonate is used in the reactants. What VOLUME of CARBON DIOXIDE will be in the products.
PLEASE HELP
Answer:
Acids react with carbonates to liberate CO2.
You didn't mention the acid in question.,.
So I'll just pick for myself(HCl) and react with Sodium carbonate
The Equation of reaction would be
2HCl + Na2CO3 ==== 2NaCl + H2O + CO2
It is balanced
Explanation:
Given .... 70g of Sodium carbonate.
Reacting Moles of Na2CO3 = mass/molar mass
Molar Mass of Na2CO3 = 23x2 + 12 + 16x3 =106gmol-¹
Mole = 70/106
= 0.66 moles of Sodium Carbonate (Na2CO3)
Looking at our balanced equation...
1 Mole of Na2CO3 reacts to produce 1mole of CO2
Since Their Mole ratio is equal(1:1)...
It now means that an equal amount of CO2 will be produced
Therefore ..... 0.66moles of Na2CO3 Will produce 0.66moles of CO2
So we now have moles of CO2
Recall ... 1mole of any gas at STP contains 22.4L
Therefore ...
0.66moles will contain
= 0.66 x 22.4L
=14.784L of CO2 will be in the products
Can someone help me with 3
Answer:
14.67
Explanation:
x
Explain the rise and fall of the kingdom of Aksum
Answer
Rise: The kingdom of D'mt populated the majority of the Northern horn which had developed much agriculture and expansion of trade with other empires like Egypt. After the fall of the D'mt kingdom many small kingdoms took its place and slowly came together as one large kingdom called, Aksum. Aksum rose to power in the first century after the son of a Solomon queen had expanded to the land near the red sea.
Fall: The empire had become isolated from civilizations when it came to trade after battling Arabian armies. Their religion segregated them and caused the downfall of their power over the trading ports on the Red Sea.
For more information, go here: https://storymaps.arcgis.com/stories/9b7b377398724be99a0d94dfa9f55550
i need help on this question
NO LINKS!
Answer:
2 experimental
Explanation:
A rocket travels in a straight line at a speed of 5,000 m/s. After 60 seconds, it is 10,000 m/s. What is the rocket’s acceleration?
Answer:
83.33 m/s^2
Explanation:
Acceleration is defined as the rate of change of velocity.
So if we know that at the beginning an object has a velocity V1.
And after a time T, the object has a velocity V2, then the average acceleration in that time interval can be calculated as:
A = (V2 - V1)/T
In this case, we know that the initial speed was 5,000 m/s
And after a time of 60 s, the velocity is 10,000 m/s
Then we have:
V1 = 5,000 m/s
T = 60s
V2 = 10,000 m/s
Then the average acceleration is:
A = (10,000 m/s - 5,000 m/s)/60s = 83.33 m/s^2
Multiple Choice
Selectively cutling down trees on an area of land can be best described as
A. culting down certain trees while leaving other trees standing.
B. cutting down all of the trees and smaller plants.
C. cutting down none of the trees on the land.
D. cutting down all of the trees while leaving all other plants standing.
Answer:
a because this is what happens at papper mills they cut large trees and leave small ones.
The molecular mass of nicotine is 162.1 grams. Nicotine contains 74.0% carbon, 8.7% hydrogen, and 17.3% nitrogen. Determine it's molecular formula.
A). C10H14N2
B). C6H8N4
C). C5H7N
D). C3H6N
I give Brainliest! Please no links
Answer:D). C3H6N
Explanation:applesause
If methane gas was kept in a 3.00 L container at STP, what would the pressure
be at 3.2 L?
Given
P1 = 1 Atm ( at stp)
V1 = 3.00 L
V2 = 3.20 L
P2 = ?
We know that,
at constant temperature
P1V1 = P2V2
1 × 3 = 3.2 × P2
P2 = 3/3.2
P2 = 0.9375 Atm
pressure at 3.2 L is 0.9375 Atm.
Is this a neutral atom or a charged ion ? N why
Answer:
Explanation:
Atoms are neutral; they contain the same number of protons as electrons. A neutral sodium atom, for example, contains 11 protons and 11 electrons. Atoms that gain extra electrons become negatively charged.
Select all that apply.
When the products of a reaction have less energy than the reactants:
The reaction is exothermic.
The reaction is endothermic.
The reactants lost internal energy.
The change in enthalpy is positive.
Answer:
The reaction is endothermic
Explanation:
we know that the reactants had to get energy from its surroundings which means that the reaction is endothermic
Which of these elements would form an ion with a charge of -1?
Group of answer choices
K
C
F
Answer:
k
Explanation:
that is shide rong and shide right
Please help and thank you
Answer:
C
Explanation:
This is a chemical reaction, because only the electrons were rearranged
What’s the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and 29.0% oxygen?
Metals, Non-Metals, Metalloids
Students were asked to analyze the descriptors of the following elements.
What would make oppositely charged objects attract each other more?
increasing the positive charge of the positively charged object and increasing the negative charge of the negatively
charged object
decreasing the positive charge of the positively charged object and decreasing the negative charge of the negatively
charged object
increasing the distance between the positively charged object and the negatively charged object
maintaining the distance between the positively charged object and the negatively charged object
Answer: increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object.
Explanation:
edge
Answer:
Your answer is A.
Explanation:
_____ Ni(OH)2 + _____ H2(SO4) → _____ Ni(SO4) + _____ H2O this is balancing chemical equations I need help fast
What is the mole fraction of each component of a gas mixture that contains sulfur trioxide at a pressure of 1.45 atm and sulfur dioxide at a pressure of .32 atm
Answer:
[tex]x_{SO_3}=0.82\\\\x_{SO_2} =0.18\\[/tex]
Explanation:
Hello there!
In this case, according to the given information, it is possible for us to solve this problem by using the Dalton's law which allows us to calculate the mole fractions by dividing the partial pressures over the total pressure. In such a way, we plug in the given pressures of sulfur trioxide (SO3) and sulfur dioxide (SO2) to obtain:
[tex]x_{SO_3}=\frac{1.45atm}{1.45atm+0.32atm} =0.82\\\\x_{SO_2}=\frac{0.32atm}{1.45atm+0.32atm} =0.18\\[/tex]
Best regards!
Which of the following is not a natural resource?
A
wind energy
B
wood from trees
С
copper
D
computers
Answer:
computers
Explanation:
Which of the following characteristics describes an acid? (Aks 4b)
Answer:
B: turns litmus red
Explanation:
Looking at the given options;
An acid tastes sour and not bitter and so option A is not correct.
Acid turns blue litmus paper red and not any litmus paper. Thus option B is correct.
Acid has a PH < 7. Thus option C is not correct.
An acid feels just wet while it is a base that feels slippery to touch. Option D is not correct.
What is the molecular formula of sodium chloride?
Answer:
The molecular formula of sodium choride is NaCl
An empty beaker weighs 20g and when filled with kerosene weighs 60g. If the volume of the kerosene is 15cm3, calculate the density of the kerosene
Answer:
2.7 g/cm³
Explanation:
Step 1: Calculate the mass of kerosene
The mass of the full beaker (mFB) is equal to the sum of the masses of the empty beaker (mEB) and the mass of the kerosene (mK).
mFB = mEB + mK
mK = mFB - mEB
mK = 60 g - 20 g = 40 g
Step 2: Calculate the density of kerosene
Density (ρ) is an intrinsic property of matter. It can be calculated as the quotient between the mass of kerosene and its volume.
ρ = m/V
ρ = 40 g/15 cm³ = 2.7 g/cm³
0.378g grams of a compound is made up of 0.273g of Mg and 0.105g nitrogen. Find its empirical formula.
Answer:
The empirical formula of the compound is [tex]Mg_3N_2[/tex].
Explanation:
Mass of magnesium in compound = 0.273 g
Mass of nitrogen in the compound = 0.105 g
Moles of magnesium =[tex]\frac{0.273 g}{24.305 g/mol}=0.0112 mol[/tex]
Moles of nitrogen = [tex]\frac{0.105 g}{14.0067 g/mol}=0.00750 mol[/tex]
Form empirical formula divides the lowest value of moles of an element present with all the moles of elements present.
Magnesium [tex]=\frac{0.0112 mol}{0.00750 mol}=1.5[/tex]
Nitrogen [tex]=\frac{0.00750mol}{0.00750 mol}=1[/tex]
The empirical formula of a compound:
[tex]Mg_{1.5}N_1=Mg_{\frac{15}{10}}N_1=Mg_{15}N_{10}=Mg_3N_2[/tex]
The empirical formula of the compound is [tex]Mg_3N_2[/tex].
How many grams of Sulfuric Acid are needed to produce 57.18 g of Lead (IV) Sulfate when being neutralized by a sufficient amount of Lead (IV) Hydroxide? *
Answer:
40.72g of sulfuric acid are needed
Explanation:
When sulfuric acid, H₂SO₄, is neutralized by lead (IV) hydroxide, Pb(OH)₄, Lead (IV) sulfate, Pb(SO₄)₂ and water as follows:
2 H₂SO₄ + Pb(OH)₄ → Pb(SO₄)₂ + 4H₂O
To solve this question we must find the moles of 57.18g of Pb(SO₄)₂. As 2 moles of H₂SO₄ produce 1mol Pb(SO₄)₂ we can find the moles of H₂SO₄ and its mass as follows:
Moles Pb(SO₄)₂ -Molar mass: 275.23 g/mol-
57.18g * (1mol / 275.23g) = 0.2078 moles Pb(SO₄)₂
Moles H₂SO₄:
0.2078 moles Pb(SO₄)₂ * (2mol H₂SO₄ / 1mol Pb(SO₄)₂) = 0.4155 moles H₂SO₄
Mass H₂SO₄ -Molar mass: 98g/mol-
0.4155 moles H₂SO₄ * (98g / mol) =
40.72g of sulfuric acid are neededa. 35
b.65
c.81
d.180
I think it's 80 . 12
pls tell me if correct