why is no one helping me this is some bs
Transferring charge by touching or rubbing is called-
A) charging by contact
B) convection
C) insulation
D) none of these
Answer:
A) Charging by contact
Explanation:
Transfer of heat by direct contact, Heat energy is conducted from the hotter medium to the cooler medium
A student observes that a patch of grass in a garden can reproduce without seed formation by using the structures that grow horizontally from the roots. Which form of vegetative propagation does the student observe?
A). vines
B). tubers
C). seeds
D). runners
Can you…Balance a chemical equation using the relationships identified?
Answer:
A balanced chemical equation not only describes some of the chemical properties of substances—by showing us what substances react with what other substances to make what products—but also shows numerical relationships between the reactants and the products.
1. Factorise
3х
- 10x +8
Answer:
This question is incomplete, it should read 3x² - 10x + 8. The answer is (3x-4) (x-2).
Please find the solved explanation to this question attached
Explanation:
To factorize means to write an expression as a product of its factors using brackets. It is the opposite of expanding an algebraic expression i.e. it involves contracting it using factors common to the variables.
In this question, 3x² - 10x + 8 is given
For the sum, which is -10x, and product, which is 24x², -6x and -4x are the two variables whose sum will give rise to -10x and also whose product will give rise to 24x².
We have;
3x² - 10x + 8
3x² - 6x - 4x + 8
Next, we look for factors of each pair of expression.
3x (x - 2) - 4 (x - 2)
(3x - 4) (x - 2)
help? will give brainliest
Explanation:
code: 257 403 0731
Pass: HELLO
zooooom
Help please I will give you the brainliest
Answer:
Salmonella
Poultry
Explanation:
I'm a cook. :D
Answer:
just put random words thats what i always do i never got a grade lower than c
Fill in the blanks according to the chemical reaction below to
indicate how many molecules of each substance are present.
N2 + 3H2 + 2NH3
Substance
N2
H2
NH3
Molecules Present (Coefficient)
The molecules or coefficient of N2 would be 1, that of H2 would 3, and that of NH3 would be 2.
From the balanced equation of the reaction:
[tex]N_2 + 3H_2 ---> 2NH_3[/tex]
1 mole of N2 will react with 3 moles of H2 in order to produce 2 moles of NH3. In order words, the mole ratio of N2 to H2 to NH3 in the reaction will always be 1:3:2.
Thus, the coefficient of N2 in the equation will be 1, the coefficient of H2 will be 3, and the coefficient of NH3 will be 2.
More on balancing equations can be found here: https://brainly.com/question/7181548?referrer=searchResults
Answer: 3:2
this is the answer I came up with that was correct after I did the question in ck12
Ice was heated at a constant rate. Eventually all ice changes to gas.
What change of state occurs between 200 and 750.
Answer:
100°C And will be same. Your best bet is to calculate your answer. Explanation:
Help! ASAP! Please on the questions
Answer:
62.15 m (squared)
Explanation:
We know that the Area of the square is 5.5 x 4= 22
so 90 degree to 30 degree is divide by 3
so u divide 22 by 3 and get 7.3 wich is the semi circle thing
now 7.3 x 5.5 = 40.15
22 + 40.15 = 62.15 m (squared)
Look im not really sure but I think this is the answer
Please mark as brainliest
Have a great day, be safe and healthy
Thank u
XD
Answer:
1. The area of the rectangle is 22 but I'm not sure the area of the shape above sorry.
A. 28 m
B. 672 m
Explanation:
A. 6 + 6 + 8 + 8 = 28 or 2(6+8) = (2)14 = 28
B. 28 * 24 = 672
AN ARRANGEMENT OF ELEMENTS INTO ROWS and columns according to similiarties in their properties
Answer:
Periodic table of elements
Explanation:
Which pair of substances would be easy to separate using distillation?
A. Water and alcohol
B. Suger and salt
C. Oil and water
D. Sand and gravel
Answer: A
Explanation:
Energy that is stored due to an object's height above the ground is __
Answer:
Gravitational potential energy
Explanation:
it is
Based on the descriptions in the passage, which scientist proposed a model of the atom that matches the
diagram?
Answer:
J. J. Thomson
Explanation:
This is called the plum pudding model which was proposed by J. J. Thomson.
would you consider essential for maintaining life?
2
A
TA1
nutrition, respiration, transportation, excretion, control. and coordination.
calculate the formula unit mass of CaCl2
How are igneous and sedimentary rocks similar? A.They are both formed by erosion. B.They are both formed from cooled lava. C.Heat and pressure can turn them into lava. D.Heat and pressure can turn them into metamorphic rock.
Answer:
D
Explanation:
I learned this last year.
80 points to whoever ACTUALLY solves ALL 4!!
It has something to do with boyle’s/charle’s/G-L/Combined Gas Laws
I’m super lost and I’ve been working on this for nearly 2 hours!
Answer:
See Explanations
Explanation:
The Empirical Gas Laws include ...
Boyles Law => P₁V₁ = P₂V₂
Charles Law => T₁/V₁ = T₂/V₂
Gay-Lussac's Law => P₁/T₁= P₂/T₂
Avogadro's Law => V₁/n₁ = V₂/n₂
Combined Gas Law => P₁V₁/T₁ = P₂V₂/T₂
Ideal Gas Law => PV = nRT; R = 0.08206 L·Atm/mol·K
One only needs to learn the 'Combined Gas Law' in that it embodies all of the gas law problems.
Start with a simple table for P, V & T and enter given data. If a variable is not given, assume it is constant. Set up P₁V₁/n₁T₁ = P₂V₂/n₂T₂ and substitute given data. Solve for unknown.
Your Problems:
1. P₁ = 1 Atm P₂ = 3 Atm
V₁ = 300ml V₂ = ?
T₁ = Constant T₂ = T₁
n₁ = Constant n₂ = n₁
P₁V₁/n₁T₁ = P₂V₂/n₂T₂
=> (1Atm)(300ml)/(Constant)(Constant) = (3Atm)(V₂)/(Constant)(Constant)
=> (1Atm)(300ml) = (3Atm)V₂
=> V₂ = (1Atm)(300ml)/(3Atm) = 100ml
2. P₁ = 1 Atm P₂ = ?
V₁ = Constant V₂ = V₁
T₁ = 273K T₂ = 82K
n₁ = Constant n₂ = n₁
P₁V₁/n₁T₁ = P₂V₂/n₂T₂
=> (1Atm)(Constant)/(273K)(Constant) = (P₂)(Constant)/(82K)(Constant)
=> (1Atm)/(273K) = (P₂)/(82K)
=> P₂ = (1Atm)(82K)/(273K)
=> P₂ = 0.3 Atm (1 sig-fig)
3. P₁ = 101.25kPa P₂ = 506kPa
V₁ = 5 Liters V₂ = ?
T₁ = Constant T₂ = T₁
n₁ = Constant n₂ = n₁
P₁V₁/n₁T₁ = P₂V₂/n₂T₂
=> (101.25kPa)(5L)/(Constant)(Constant) = (506kPa)(V₂)/(Constant)(Constant)
=> (101.25kPa)(5L) = (506kPa)(V₂)
=> V₂ = (101.25kPa)(5L)/(506kPa)
=> V₂ = 1.00 Liter
4. P₁ = Constant P₂ = P₁
V₁ = 3.2 Liters V₂ = ?
T₁ = 273°C + 273 = 546K T₂ = 400°C + 273 =673K*
n₁ = Constant n₂ = n₁
*Note => be sure to convert all temps to Kelvin when working empirical gas law problems. K = °C + 273
P₁V₁/n₁T₁ = P₂V₂/n₂T₂
=> (Constant)(3.2L)/(Constant)(546K) = (Constant)(V₂)/(Constant)(673K)
=> (3.2L)/(546K) = (V₂)/(673K)
=> V₂ = (3.2L)(673K)/(546K)
=> V₂ = 3.944 Liters ≅ 3.9 Liters (2 sig-figs)
What is the percent composition of aluminum in the ore bauxite (AI2O3)?
Answer:
Molar mass of Al2O3 = 101.961276 g/mol
This compound is also known as Aluminium Oxide.
Convert grams Al2O3 to moles or moles Al2O3 to grams
Molecular weight calculation:
26.981538*2 + 15.9994*3
Percent composition by element
Element Symbol Atomic Mass # of Atoms Mass Percent
Aluminium Al 26.981538 2 52.925%
Oxygen O 15.9994 3 47.075%
Explanation:
Percent composition by element
Element Symbol Mass Percent
Aluminium Al 52.925%
Oxygen O 47.075%
HELP ASP
A chemical reaction happens when one substances changes into another substance.
True or False
True becuase the substance changed into another substance which is a example of a chemical reaction.
If 10.0g of powdered iron is heated with 10.0g of sulfur in an open crucible, what is the mass of iron (II) sulfide that is formed? What mass of excess reactant is leftover? The reaction is as follows: Fe+S8–> FeS
Answer:
See Explanation
Explanation:
8Fe + S₈ => 8FeS
Given: 10g 10g
moles 10g/56g/mol 10g/256g/mol
= 0.179mol Fe = 0.039mol S₈
Reduce => divide mole values by respective coefficients; smaller value is Limiting Reactant.
0.179/8 = 0.022 0.039/1 = 0.039
=> Fe is limiting reactant
8Fe + S₈ => 8FeS
Given: 10g/56g/mol 10g/256g/mol
= 0.179mol = 0.039 mol 0.179mol FeS produced
1/8(0.179)mol S₈ used (coefficients are equal,
= 0.022 mol S₈ used => moles Fe = moles FeS)
= (0.039 - 0.022)mol S₈ = 0.179mol FeS
remains in excess =(0.179mol)(88g/mol)
= 0.0166 mol S₈ (excess) = 15.8 g FeS
= (0.0166mol)(256g/mol) (Theoretical Yield)
= 4.26g S₈ in excess
This pizza is a delicious combination of a bread crust, tomato sauce, cheese, and meat. Like all nutritious foods, this pizza provides energy for all of the body's activities. HELP ME PLS
1. Where do you think the energy in each of these four food groups comes from? How confident are you with your prediction?
Answer: pizza crust, Vegetables, Dairy, Meat, and Dairy
Explanation:
The pizza crust is important, not only to deliver those mouthwatering toppings to your anxiously waiting taste buds, but to provide vital nutrients from grains. Vegetables are a common and delicious topping for pizza. These toppings provide an array of nutrients and including multiple servings of vegetables in your diet every day is a necessary part of a healthy lifestyle. If you get meat on your pizza, it is an excellent source of protein. All meat is high in protein and iron, which are necessary to build muscle. Cheese is a good source of the calcium we all need for strong bones and teeth. Cheese is also a good source of protein.
A bread crust contains carbohydrate, vegetables contains vitamins, cheese contain calcium and protein, meat contain protein.
What are nutrients?Nutrients are the substance that makes a body healthy.
Food material contain different nutrients that help in growth of the body.
In pizza, we get all type of nutrients
A bread crust contains carbohydrate which provide energy.
Vegetable contains vitamins to keep the body parts healthy.
Cheese contain calcium and protein which maintain the growth and repairing of the body.
Meat contain protein, good for muscles.
Thus, A bread crust contains carbohydrate, vegetables contains vitamins, cheese contain calcium and protein, meat contain protein.
Learn more about nutrient, here:
https://brainly.com/question/1268939
what is FGD /Flue gas desulfurization is used for?
Answer: Flue-gas desulfurization (FGD) material is a product of a process typically used for reducing SO2 emissions from the exhaust gas system of a coal-fired boiler.
Explanation:
Identify the reactants in this reaction.
o carbon dioxide, water, and sodium acetate
O baking soda and vinegar
DONE
Explanation:
When mixed together, baking soda and vinegar undergo a chemical reaction. Carbon dioxide, water, and sodium acetate are formed during the reaction.
Answer:
It’s baking soda and vinegar
And the products in the reaction are carbon dioxide, water, and sodium acetate
Explanation:
Trust
A particular mountain stream is home to a population of salamanders that are red in
color. In the past year, a second population of salamanders that are dark blue in color
moved into the same stream. Scientists researching the stream have recently discovered young salamanders that are red with dark blue patches on their bodies.
What can the scientists conclude from this evidence?
A). The salamanders are suffering from a bacterial disease.
B)..The salamanders are on the verge of becoming extinct.
C). The salamanders undergo asexual reproduction.
D). The salamanders undergo sexual reproduction.
Answer:
D
Explanation:
The salamanders undergo se×ual reproduction.
What is Se×ual reproduction?
This is defined as the production of new organisms by the combination of genetic information of two individuals of different genders.
Thus results in variations in the offsprings produced which us why the Salamanders had different color patches.
Read more about Se×ual reproduction here https://brainly.com/question/815744
True or False :The product of a chemical reaction is always different than the original reactants.
Answer:
True
Explanation:
Octopus and squids breathe through
Octopus and squids breathe like fishes they breathe from gills
so even octopus and squids breathe through gills too.
maybe this answer would help u
How many ATOMS are in 7.32 moles of sulfur
dioxide?
PLEASE HELP ILL GIVE BRAINLIEST
What do you think will happen if the experiment from the video kept running? Explain with vocabulary words from the
chapter.tinyurl.com/AMPTE-05
Answer:
Since the temperature of the water made the air hot, i believe that after the video if the experiment continued it would have just made the air a little warmer but not too hot.
Explanation:
True or False: Tsunamis always look like a towering wall of water approaching the beach.
Answer:
false
Explanation:
Answer:
True
Explanation:
they can get up to several hundreds of feet.