Answer:
this not easy
Explanation:
come on
Which of the following is the metallic ion in sodium fluoride? 1. Na 1- 2. Na1 + 3. F 2- 4. F 2+
Answer:
2. Na1 +
Explanation:
The formular for sodium fluoride is; NaF
The metal in sodium flouride is sodium.
Sodium belongs to group 1, hence would lose one electron when forming ions.
This is represented as;
Na+
What is the name of the compound with formula P3O10?
Answer:
The compound of the formula is Sodium triphosphate.
Explanation:
26. A pathogen is any organism that causes a disease. Which of the following is an example of a pathogen that
infects humans?
A.parasite
B.plasmid
C.plant cell
D.plasma membrane
Answer:
A.parasite
Explanation:
Which set of reagents will best convert 2,2-dimethylpropan-1-ol (neopentyl alcohol) to 4,4-dimethylpentan-2-ol
Answer:
SOCl2, Mg, CH3CHO, H3O^+
Explanation:
The reaction of the 2,2-dimethylpropan-1-ol with SOCl2 converts the alcohol to an alkyl halide. This now reacts with Mg metal to yield a Grignard reagent.
The Grignard reagent reacts with CH3CHO and acid to yield 4,4-dimethylpentan-2-ol as shown in the image attached to this answer.
why are cell wall chloroplast and vacuole found in plant cell only while centriole is for animal cell only?
Answer:
The cell wall and chloroplasts are essential for autotrophic processes, basically allowing plant life to thrive off of self-made nutrients/food. This is why they are only in plant cells.
Centriole:Anatomically, animal cells have them and plant cells don't have them. Centrioles direct the movement of chromosomes during cell division, but plant cells don't need this since they use photosynthesis.
Explanation:
8. Water behind a dam, a moving car, and electricity moving in a circuit all are examples of
energy because they
a. Help accomplish a job
b. Can cause change
C. Are expensive to create
d. Come from fossil fuels
Answer:
a. Help accomplish a job
Explanation:
Energy is defined as the ability to do work. It is the ability to get a job done.
Where energy is deficient, no job or work can be done.
In a water behind a dam, potential energy is stored. Potential energy is due to the position of a body. A moving car has kinetic energy which the energy due the motion of a body. Electrical energy is used to carry the currents in a circuit round about.This image of a baby was produced using ultrasound.
Which option is the best model of how the image was made?
O An X-Ray
O An echo
O A convex lens
O A turbine
Answer:
im pretty sure its "An echo"
Explanation:
Answer: An echo
Explanation:
it's very much correct
For all seawater problems, assume the salinity is 3.5%
If you have a 2000 gram sample of seawater, how many grams of pure water are there?
0.035 x 2000) = x, 2000 - x = pure water
Answer to the nearest WHOLE number.
Answer:
1930g
Explanation:
We have been given that the salinity of sea water is 3.5%;
Now the mass of sea water sample is 2000g
So, problem here is to find the quantity of pure water in the sample = ?
Solution:
Let us find the quantity of the salt in the sample;
Salt content = 3.5% x 2000 = 70g
Amount of pure water = 2000 - 70 = 1930g
Calculate the number of moles of iron that are contained in 2.89x10^ 25 atoms of iron
0.446 g of hydrogen gas fills a 5.0 L bag determine the density of hydrogen
The density of hydrogen : ρ = 0.0892 g/L
Further explanationGiven
mass of Hydrogen : 0.446 g
Volume = 5 L
Required
The density
Solution
Density is a quantity derived from the mass and volume
Density is the ratio of mass per unit volume
The unit of density can be expressed in g/cm³, kg/m³, or g/L
Density formula:
[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]
Input the value :
ρ = m : V
ρ = 0.446 g : 5 L
ρ = 0.0892 g/L
How does temperature affect pressure?
As temperature increases so does pressure.
Pressure is not affected by temperature.
Pressure will always increase if temperature increases or decreases.
As temperature increases, pressure decrease.
Answer:
fr
Explanation:
I need help as fast as possible
Please help me thanks so much....I’ll mark you?!?!:)))) ( 15 points)
Answer:
all of the above
Explanation:
Tonic bonding is the result of electron transfer.
Lose electrons and become positive ions. While,
Gain electrons and become negative ions.
gain
Write your two answers with a comma between them like: dogs, cats.
Answer:
metals, non-metals
Explanation:
Ionic bonding results from electron transfer. To form this bond type, metals lose electrons and becomes positive ions. While non-metals gain electrons to become negatively charged.
Ionic bond forms between a very less electronegative substance and one with with a higher one. The two ions formed attracts one another with an electrostatic force. This electrostatic force is the ionic bonding that holds the atoms together.Many organisms on Earth exhibit similar ____________.
Question 1 options:
time
single-celled
characteristics
nonliving
Answer:
Characteristics
Explanation:
hope this helps
Of the following two gases,
which would you predict to
diffuse more rapidly?
СО
CO2
CO diffuses more rapidly as compared to CO₂.
What is Diffusion?Diffusion is the movement of a substance from an area of high concentration to an area of low concentration. The process of diffusion happens more rapidly in gases and liquids as compared to solids because their particles can move randomly.
The gases spread in the entire space available to them and intermix together even against gravity.
The Graham's law of diffusion states that the rates of diffusion of the gases are inversely proportional to the square root of their molar masses under same temperature and pressure.
Therefore, CO diffuses more rapidly as compared to CO₂.
Learn more about Diffusion, here:
https://brainly.com/question/1395899
#SPJ7
An object has a density of 7.8 g/cm3 and a volume of 9 cm? What is the mass of the object?
Answer:
70.2 grams
Explanation:
The formula for density is p = m/V.
Here, p (density) and V (volume) are already given.
So, modify the formula to: m = pV.
p is 7.8 g/cm³, and V is 9 cm³.
m = 39/5 * 9/1
m = 351/5
m = 70.2 grams
The mass of the object is 70.2 grams.
According to the graph, which statement is correct?
Answer:
There is no graph
Explanation:
How many molecules are in 38.4 moles of NF3?
Answer:3
Explanation:
I added and substituted for the garlic
Which of the following is true of ionic bonds?
Moving electrons become delocalized between the atoms creating the
ionic bond
Electrostatic attraction results in the arrangement of charged atoms in a
regular, geometric structure called a crystal lattice.
Transferring of valence electrons creates the bond
The bond is created by oppositely charged metal and nonmetal atoms
Sharing Valence electrons between nonmetal atoms creates the bond
Answer:
D: The bond is created by oppositely charged metal and nonmetal atoms.
Explanation:
An ionic metal basically involves a metal and a nonmetal in bonding. A metal is a cation with a + charge and a nonmetal is a anion with a - charge. I will give you an example. Magnesium Chloride is a ionic bond. This is because Magnesium is a metal with a +2 charge(so it is a cation). Chloride or Chlorine is a nonmetal because it has a -1 charge.(so it is a anion). The chemical formula for magnesium chloride is MgCl2.
Hope my answer helped! Have a great day.
Mg2+ and Br- formula
Answer:
MgBr₂
Explanation:
The given ions are:
Mg²⁺ and Br⁻
To find the formula of the compound that will result, we use the combining power or valency approach.
The combining power is the number of electrons usually lost or gained or shared by atoms of elements during the chemical combination.
Mg²⁺ and Br⁻
combining power 2 1
exchange of valencies 1 2
Molecular formula is given as MgBr₂
The chemical formula for methanol is: Calculate the molar mass of methanol. Round your answer to decimal places.
Answer:
CH3OH (Methanol)MM = 12 + 8 + 16 = 36u
How do you draw a branched carbon chain for trimethylbutane?
Answer:
I think this is how you draw it, but I'm not entirely sure.
Explanation:
Screenshot below:
Which atorn was used to determine the amount of particles in a mole?
Answer:
carbon atom is used to determine the amt of particles in a mole
how many grams og gas must be relased from a 45.2 L sample of N2 at STP to reduce the volume to 45.0 L at stop
Answer:54,6
Explanation:
Answer:
yes it is 54,6
Explanation:
54,6 you ar correct you did a graet job
please fast!!!!!!!!!!!!!!!!!!!!!!
Answer:
1 g/mL.
Explanation:
From the question given above, the following data were obtained:
Volume = 100 mL
Mass = 100 g
Density =?
Density of a substance is simply defined as the mass of the substance per unit volume of the substance. The density can be expressed mathematically as:
Density (D) = mass (m) / volume (V)
D = m / V
With the above formula, we can obtain the density of the liquid as follow:
Volume (V) = 100 mL
Mass (m) = 100 g
Density (D) =?
D = m / V
D = 100 / 100
D = 1 g/mL
Thus, the density of the liquid is 1 g/mL
An empty Erlenmeyer flask weights 241.3 g. When filled with water (d = 1.00 g cmଷ ⁄ ), the flask and its contents weight 489.1 g. What is the flask’s volume? What is the mass of the flask when filled with chloroform (d = 1.48 g cmଷ ⁄ )?
Answer:
608 g
Explanation:
Mass of flask + contents = 489.1 g
Mass of flask = 241.3 g.
Mass of water = 489.1 - 241.3 = 247.8 g
Density of water = 1.0 g/cm^3
volume of water = 247.8 g/1.0 g/cm^3
Volume = 247.8 cm^3
But
Volume of flask = volume of water
Volume of flask = 247.8 cm^3
volume of chloroform = volume of flask
mass of chloroform = 1.48 g/cm^3× 247.8 cm^3
Mass of flask + chloroform = 366.7 g + 241.3 = 608 g
3. Why do you think the image of the pencil inside the beaker of water is different than the pencil
inside the empty beaker?
I’m going to give brainlest to who answers does tree questions
Answer:
the water.
Explanation:
well the water makes things look larger than due to ( the surface of a water drop curves outwards to make a dome. this outward or convex, curature light rays inward. the result is an enlarge ment image on the eye. / makes it look larger) + more mass.
Why is the time series useful as a management tool?
A) It estimates the probability of extinction.
B) It estimates the harvested numbers.
C) lt monitors a population's age structure.
D) It designates wildlife refuge areas.
Answer:
A)
Explanation:
It estimates the probability of extinction.
(Please explain the answer. Thank you!)
A chemist needs 2.00 g of a liquid compound, which has a density of 0.718 g/mL. If the
compound costs $5.67 per mL, how much will a 2.00 gram sample cost?
Sample cost = $15.796
Further explanationGiven
Mass = 2 g
Density = 0.718 g/ml
Cost = $5.67 per mL
Required
Cost
Solution
The density : the ratio of mass and volume
Can be formulated :
Density (ρ) = m : V
The volume of the liquid :
V = m : ρ
V = 2 g : 0.718 g/ml
V = 2.786 ml
Sample cost :
= 2.786 ml x $5.67/ml
= $15.796