Why is blood is sometimes called "the river of life"?
Answer:
Blood is liquid and red, just like a red river. And for humans without blood there is no life because there is nothing to transport nutrients and oxygen to the body cells. Hence blood is the red river of life.
Answer:
i think its because of how the blood is one of the main reasons we are alive today. And without it we'd die
why would a percent yield be less than 100%? give a reason
Answer:
Usually, percent yield is lower than 100% because the actual yield is often less than the theoretical value. Reasons for this can include incomplete or competing reactions and loss of sample during recovery. ... This can happen when other reactions were occurring that also formed the product.
Explanation:
Ribosomes are like tiny “factories” within cells that do all of the following EXCEPT
Answer:
translate DNA into RNA I hope it helps
Identify each chemical reaction as endothermic or exothermic based on its description.
Answer:
Exothermic.
Explanation:
So if the sum of the enthalpies of the reactants is greater than the products, the reaction will be exothermic.
A Flame test is an example of chemistry property. What evidence can you use to back your statement up?
how many neurons are in phosphorous
Answer:
16 neutrons
hope this helped
Answer:
There are approximately 31 Neutrons in Phosphorous.
Explanation:
The atomic number for Phosphorous is 15
The element category for Phosphorous is non-metal
The number of Neutrons in Phosphorous are 31
Hope this helps! :)
How do metamorphic rocks form?
A) Heat and pressure
B) Cooled magma or lava
C) Compaction and cementation
D) Melting
Answer: The answer is A heat and pressure
Explanation:
8. (a) What is an acid-base indicator?
Answer:
Acid–base indicators are generally weak protolytes that change color in solution according to the pH. The acid–base equilibrium of a weak acid type of indicator (HI) in water can be represented as. [I] The acid, HI, and the conjugate base, I−, have different colors. The equilibrium expression for this process is.
Explanation:
total solar
eclipse where
only the corona
is visible is called?
Answer:
Chromosphere
Explanation:
Mark me Braainliest?
What is the relative humidity if the dry bulb temperature is 16°C and the wet bulb temperature is 16°C?
How are ocean waves different from sound waves?
Answer:
Ocean waves are longitudinal waves, Sound waves are transverse waves. Ocean waves are electromagnetic waves, Sound waves are mechanical waves. A Sound wave of over 20,000 Cycles per Seconds is inaudible to Humans.
Explanation:
Answer:
Ocean waves are mechanical waves while Sound waves are electromagnetic waves
Explanation:
How many grams are in 4.00 moles of Cr2O3?
Answer:
607.9616 grams
Explanation:
Pls help really need it pls
1.5
What is the purpose of adding sodium carbonate to the reaction mixture?
I
Answer: As sodium carbonate is added, bubbles of carbon dioxide form. When all the acid has been neutralised, adding sodium carbonate will no longer produce bubbles of carbon dioxide gas. The final rinsing with water should remove traces of the water soluble salt formed.
Explanation:
plzz mark as brainliest
Please help me in this question?
The answer is B
Explanation:
Can you mark brainliest I correct
1. Suppose you have 1.00 mol of liquid water at 0.0 C and add just enough heat to bring the
temperature of the water to 100.0 °C, but no more heat is added. How much heat was added?
Answer: Heat Q = m·c·ΔT
Explanation: Mass of 1.00 mol water m= 18.016 g. Heat capacity of water is
c= 4.19 J/( g K) and change of temperature ΔT= 100 K
Please help me with this chem question, I’ll mark you brainiest if it’s right. There’s multiple answers for this one.
Cant be B) or C)
Answer:
Option A. KCl (aq)
Option D. Mg(OH)₂(s
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
MgCl₂(aq) + KOH(aq) —>
In solution, MgCl₂(aq) and KOH(aq) will dissociate as follow:
MgCl₂(aq) —> Mg²⁺(aq) + 2Cl¯(aq)
KOH(aq) —> K⁺(aq) + OH¯(aq)
MgCl₂(aq) + KOH(aq) —>
Mg²⁺(aq) + 2Cl¯(aq) + 2K⁺(aq) + OH¯(aq) —> 2K⁺(aq) + 2Cl¯(aq) + Mg(OH)₂ (s)
MgCl₂(aq) + KOH(aq) —> 2KCl (aq) + Mg(OH)₂(s)
Thus, the products of the above reaction are: KCl(aq) and Mg(OH)₂(s)
Thus, option A and D gives the correct answer to the question.
8 billion molecules of O2 gas
Which option identifies what might change Larry's mind in the following scenario? Larry is not interested in participating in his neighborhood's recycling program because he thinks it is too much of a hassle. offering a dual-stream recycling program o providing bins for each recyclable material O simultaneous trash and recycling collection offering a single-stream recycling program Save and Exit Mark this and return Sign
Answer:
providing bins for each recyclable material could change Larry's mind, coz in return of unnecessary things of household she's getting bins in return so she might get interested!
Write the number 2.36 × 10-4 in expanded form.
Answer:
0.000236
Explanation:
Move the decimal point 4 times to the left of its original position
1. A typical home instant pot has an internal volume of 6.5 Liters. If the steam inside an instant pot with an internal pressure of 191.0 kPa and a temperature of 750.0 K was released into the atmosphere at 101.3 kPa and 298K, what volume with the steam occupy in the atmosphere?
2. Even though the pressure was reduced by nearly half in the scenario above, the volume of the gas decreased. Explain why. Support your answer with evidence and scientific reasoning.
Answer:
Q.1
Given=
V1=6.5ltr
P1=191.0kPa
T1= 750.pK
P2= 101.3kpa
T2= 298K
V2=?
Combined gas law: P1V1/T1 = P2V2/T2
Use the gas laws for pressure, volume and temperature calculations
Now,
191.0×6.5/750= 101.3×V2/298
V2 = 191.0×6.5×298/750×101.3
On solving further
V2 = 4.86 ltr!
4.86 volume with the steam occupy in the atmosphere!
Q.2
Scientific Reasoning:-
Temperature is directly to proportional to the pressure in second scenario the temperature was reduced to nearly half of the first one hence the pressure also decreased simultaneously, and we all know according to charles law The volume of a given gas sample is directly proportional to its absolute temperature so the decreasing temperature affected the amount of volume that decreased!
WILL MARK BRAINIEST!!
NO LINKS!! Which of the follow can NOT be possible
error that occurs during a lab experiment?
human error
O pure reactants were used
unexpected products were produced
the reaction didn't go to completion
Answer:
0 pure reactants
Explanation:
hope this helps!
If I add 25mL of water to 125 mL of 0.25 M NaOH solution, what will the molarity of the diluted solution be?
Answer:
0.208333 M
Explanation:
M2=M1V1/V2=(0.25 M)(125mL)/(125mL+25 mL)= 0.208333 M
Y’all where do I match cooling, settling, and pressure with ?? (Plz answer correctly only if u know how to do it) thx :3!!
WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST :DDD..PROMISE!
Answer:
Cooling is at the bottom, Pressure is in the middle, and Settling is at the top
why water wet glass
Answer:
because water wets stuff expect for fire.
Answer:
The meaning of wet is covered or saturated with water or another liquid, showing that is a glass is covered in water it is considered wet.
Explanation:
So I ordered a moonstone crystal and I was wondering if it’s real and is there anything I need about it??
Mmmmmmmh prolly fake stone
Answer:
GUESS IT IS FAKE.........?
When a company is to calculate the selling price of their products, they set up a product calculation. There are five benefits to the business when making a product calculation. Explain these five benefits.
Answer:
The pricing strategy is an important element in setting up the selling price of a product.
Explanation:
The pricing strategy is an important consideration while fixing up the selling price of product manufactured. When setting up a selling price of a product, the companies set up product calculation. Businesses should decide the pricing strategy before they advertise the products to the customers.
There are mainly 5 benefits to the businesses while doing a product calculation. They are:
--- Doing competition based pricing enables the company to compete with the rival companies product and is based on the market based study. Competition pricing is a useful tool for the retailers as well as the small businesses.
--- Doing a cost plus pricing helps the total cost of making the product and also an add up in the market in order to determine the pricing of the product.
--- Dynamic pricing :
Dynamic pricing is a non static pricing. Dynamic pricing is an efficient method for the market based on the supply and demand.
--- Penetration pricing :
Penetration pricing is used by the large companies which is used to capture the market share by the setting product prices at the below market level so as to gain customers.
--- Doing a research for the price skimming helps the company to set up the accurate price for the product rather than readjusting the prices of the product later on based on the demand and the supply.
A 25°C sample of gas has a volume of 5.0 L. What will it’s volume be if it is heated to 50.0°C?
Hydrogen and nitrogen react to produce ammonia gas as shown in the following chemical
equation.
N2 + 3H2 - 2NH:
How many grams of hydrogen must react to produce 31.5 grams of ammonia?
Explanation:
[tex]31.5 \: g \: aommnia \: \times \: \frac{1 \: mol \: ammonia}{8 \: g \: ammonia \: } \: \times \frac{3 \: mol \: hydrogen}{2 \: mol \: ammonia} \: \times \frac{1 \: g \: hydrogen}{1 \: mol \: hydrogen} = \: 5.90625 \: g \: hydrogen \: must \: react \: [/tex]
Calculate the mass of 488 moles of calcium carbonate, CaCO3
Help please!
Answer:
≅ 4.88 grams (3 sig. figs.)
Explanation:
to convert from ...
grams to moles => divide by formula wt.
moles to grams => multiply by formula wt.
this problem:
mass in grams = 488moles / 100.09g/mol = 4.875612 grams (calculator)
≅ 4.88 grams (3 sig. figs.)
