Answer:
Most reactions occur quickly after ingestion or contact with the allergen, but some can occur up to a few hours later. There can also be a second phase of the reaction when symptoms reoccur. It is important to keep an eye on your child for about 6-8 hours following the first reaction.
Explanation:
The correct answer is "Greater at 72 °F " hope it helps
A block of material has a density of 1.29 g/cm. what is the volume of 190 g in cubic
centimeters?
No units required
Answer:
147.28 cm³
Explanation:
Density = m/V
1.29 g = 190 g/cm3/V
V = 190 g/cm³ : 1.29 g
V = 147.28 cm³
What does this picture represent?
А. 0
Hot Plate
B.
Graduated cylinder
С.
Goggles
D.
Electronic Balance
the answer is d electronic balance
which factor increases as the efficiency of a machine increases
Answer:
Because all machines lose input work to friction, one way to improve the efficiency of a machine is by reducing friction. Oil is used to reduce friction between the moving parts of car engines. The use of oil makes engines more efficient. Another machine that loses input work is a bicycle.
Explanation:
Hope this helps.
The factor which increases as the efficiency of a machine increases is: work output.
Efficiency can be defined as a ratio of work (energy) output to work (energy) input.
Mathematically, the efficiency of a machine is given by the formula:
[tex]Efficiency = \frac{W_O}{W_I} \times 100[/tex]
Where:
Wo is the work output.Wi is the work input.Work can be defined as the amount of energy required to move an object from one point to another.
Hence, the work done by a machine is the product of the perpendicular force acting on the machine and the distance it covers or travels.
Ideally, the work output of a machine is highly dependent on its efficiency and as such, it is a factor which increases as the efficiency of a machine increases
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Elements in the same period have the same…
Answer:
Elements in the same period have the same (number of electron shells)
Someone pls help me I will make you you brain
Answer:
I and II
Explanation:
what is the primary function of c6h12o6 in animals?
Answer:
Energy
Explanation:
C6H12O6 is glucose and the primary function of glucose is to provide energy.
An unknown material has a mass of 4.5 g and a volume of
6.75 cm3. What is the density
Answer:
0.67 cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 4.5 g
volume = 6.75 cm³
We have
[tex]density = \frac{4.5}{6.75} \\ = 0.6666666...[/tex]
We have the final answer as
0.67 cm³Hope this helps you
Dãy các chất tác dụng được với dung dịch HCl loãng tạo thành sản phẩm có chất khí
A.BảO,FE,CaCO3 B.Al,MgO,KOH
C.Na2SO3,CaCO3,Zn D.Zn,Fe2O3,Na2So3
1
16. What biological concept was Mendel studying when he crossed pea plants many times
over many generations?
A dominant and recessive traits
B. imbalance in ecosystems
C. predator-prey relationships
D. male and female genetic difference
Answer:
Explanation:
A: Since the Pea plant matured very quickly he was able to identify how the dominant and recessive genes worked.
Mass of a single 35Cl atom
a helium laser emits light with a wavelength of 633nm. what is the frequency of light
Answer:
14 ft 7 inches
step-by-step explanation:
since each model inch corresponds to 25 real inches, 7 model inches will correspond to
7×25" = 175"
at 12" per foot, that is 14 feet, 7 inches.
Explanation:
12. What is the mass of 5.00 moles of F^2 O^3?
Answer:
798.5 grams
Explanation:
I'll pay someone to do my chemistry work.
Answer:
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tu solo di cuando donde
Explanation:
1.A sample has a mass of 15 g and a volume of 3 mL. Calculate the density.
Answer:
5 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 15 g
volume = 3 mL
We have
[tex]density = \frac{15}{3} = 5 \\ [/tex]
We have the final answer as
5 g/mLHope this helps you.
Which measurement of a star depends on the distance of the star from earth?
A. luminosity
B. apparent magnitude
C. absolute magnitude
D. surface temperature
Answer:
[tex](b) \: apparent \: magnitude \\ \\ [/tex]
Explanation:
Astronomers define star brightness in terms of apparent magnitude — how bright the star appears from Earth — and absolute magnitude — how bright the star appears at a standard distance of 32.6 light-years, or 10 parsecs.
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The measurement of a star depends on the distance of the star from earth
is Apparent magnitude.
What is Apparent Magnitude?
The apparent magnitude of a star is how bright the star appears in the sky
from the earth. The apparent magnitude of a star depends on two main
factors known as:
Absolute brightnessDistance.These factors help to accurately determine the brightness of stars in the
solar system.
Read more about Apparent magnitude here https://brainly.com/question/2511956
Temperature Conversions
Use the formulas below to convert the temperature in each problem. Show your work.
Formulas: C -0.56(F-32) F = 1.8C+32 K-C + 273
C-K-273
41. Convert 22 °C to 'F.
42. Convert 22 °C to K.
43. Convert 30 °F to °C.
44. Convert 300 K to °C.
How many moles of fluorine gas are in 54.1 grams of fluorine gas?
Answer: 2.85 moles of flourine
Explanation:
find the atomic/molar mass of flourine on your periodic table.
multiply the given mass (54.1g) by (1 mole of flourine/atomic mass of flourine)
54.1g flourine * 1mole of flourine/18.998g flourine
(g flourine) in the above equation cancel each other.
54.1/18.998 = 2.85 mole of flourine
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Answer:
In fact, the moon is one of the least reflective objects in the solar system. The DSCOVER spacecraft captured this single photograph of the moon and the earth. Both the earth and the moon are illuminated by the same amount of sunlight coming from the same angle in this photo.
The moon shines because its surface reflects light from the sun. And despite the fact that it sometimes seems to shine very brightly, the moon reflects only between 3 and 12 percent of the sunlight that hits it. The perceived brightness of the moon from Earth depends on where the moon is in its orbit around the planet.
ENT
Which of the following is one of Mendel's laws?
Law of Independent Assortment
ouTube
Law of DNA contains genes
Law of Segregation of Genes
Answer:
law of independent assortment
As a front passes through your area, thunderstorms occur, winds shift from southeast to northwest, and the temperature changes from 85 to 65 degrees Fahrenheit. What kind of front was this?
Question 10 options:
cold
warm
stationary
does sulfuric acid have high or low electrical conductivity
Answer:
It has a high electrical conductivity, caused by dissociation through protonating itself, a process known as autoprotolysis. The comparable equilibrium constant for water, Kw is 10−14, a factor of 1010 (10 billion) smaller.
what kind of bond is formed between the two hydrogen atoms and the single oxygen atom?
Chemistry
How does the difference in size of particles affect the rate of diffusion?
Explanation:
Heavier particles will move more slowly and so will have a slower rate of diffusion. Smaller particles on the other hand will diffuse faster because they can move faster.
Explanation:
smaller particles diffuse faster
larger particles diffuse slower
Which of the following is found in both a cell and a virus?
A) hereditary(genetic) material B) cell membrane C) nucleus D) mitochondria
Answer:
I believe that it is a
Explanation:
I can't comment on you the other question for some reason. Do you have any other means of communication??
What is a cup of coffee considered?
A. A solute
B. A precipitate
C. A solution
D. A solvent
Answer:
Explanation:
D. solvent
Answer:
a solution
Explanation:
Verified test check.
what does it mean to say that density is a characteristic property of a pure substance
Density is the degree of the heaviness of a particular substance.
Density can also be defined as the unit mass of a substance per the substance's volume.Density is said to be the characteristic property of a pure substance because the density of a pure substance is constant and fixed
Pure substances are substances that are homogenous in nature, which means they are uniform and are made up of only one component.Density is said to be the characteristic property of a pure substance because the density of a pure substance is constant and fixed but its mass and volume can vary.To learn more, visit the link below:
https://brainly.com/question/11208248
why is beryllium-8 different from beryllium-9 in terms of the nuclear particles?
Answer:
Beryllium-8 (8Be, Be-8) is a radionuclide with 4 neutrons and 4 protons. It is an unbound resonance and nominally an isotope of beryllium. It decays into two alpha particles with a half-life on the order of 10−16 seconds; this has important ramifications in stellar nucleosynthesis as it creates a bottleneck in the creation of heavier chemical elements. The properties of 8Be have also led to speculation on the fine tuning of the Universe, and theoretical investigations on cosmological evolution had 8Be been stable.
Explanation:
What gas is dissolved into soft drinks such as soda which causes them to bubble when opened? A. Carbon dioxide B. Ethylene C. Hydrogen D. Argon
Answer: A, Carbon Dioxide
Explanation:
A. Soda water, like other carbonated beverages, contains carbon dioxide that has dissolved under pressure. When the pressure is released by opening the soda container, the liquid cannot hold as much carbon dioxide, so the excess bubbles out of the solution.
Answer:
A. carbon dioxide
Explanation:
the answer is A