Please help it really important, I will mark brainliest please

Answer:

it can tell and show what pathogen is in you as well what type and mutation so then your body can fight back and remember the genetic dna so then you will be immune in some way.

Explanation:

Question;

How does a fever aid an immune response?

Answer:

One type of immune cell jumps into the fray after body temperature rises, according to experiments in mice. A fever fights infection by helping immune cells to crawl along blood-vessel walls to attack invading microbes

Answer:

because they react with other gases of atmosphere and pollute the environment

Answer:

Cells are the smallest living unit of an organism

Answer:

all living things living things have blood cells

Explanation:

this is because robert hooke did not make this apart of the theory

Answer:

Melting and Boiling Point Determination

The physical properties of a substance can be used to establish its purity. These properties include the melting point and boiling point. Different substances tend to have different melting and boiling points, and any pure substance will have a specific melting and boiling point.

Answer:

4.16 * 10²⁴ particles

Explanation:

1. We convert from grams to moles

4 g NaCl / 58 g of NaCl = 0.0689655172 moles

-> 0.0690 moles

2. Now we will convert from moles to particles by multiplying by avogadro's number..

0.0690 * 6.022 *10²³ = 4.15518 * 10²⁴ particles or 4.16 * 10²⁴ particles

Answer:

Formic acid titrated with ammonia (NH3) as a titrant

Explanation:

We have to look at something very critical here and that is, considering whether the acid/ base is strong or weak.

For a weak acid weak base titration, there is no suitable indicator neither is there any sharp pH range because no sharp change occurs. So, for a weak acid-weak base titration, there is only a very small change in pH at the equivalence point. This makes it impractical to carry out a weak acid- weak base titration.

Formic acid is a weak acid and ammonia is a weak base. Hence, Formic acid titrated with ammonia (NH3) as a titrant is a bad titration

Answer:

Expansion: increase in size Contraction: decrease in size

Explanation:

The increase in size of an object on heating is called expansion where as the decrease in size of an object on cooling is called contraction.

Answer:

First write the balanced equation for the reaction of HCl with Zn (NOTE: the previous answer did NOT do this and thus obtained an incorrect answer)

Zn + 2HCl ==> ZnCl2 + H2(g)

moles of H2 desired:  PV = nRT

n = PV/RT = (1 atm)(10L)/(0.0821 Latm/Kmol)(298K)

n = 0.409 mole H2 desired

moles Zn needed:

0.409 moles H2 x 1 mole Zn/2 moles HCl = 0.204 moles Zn needed

mass Zn needed = 0.204 moles Zn x 65.4 g/mol = 13.4 g Zn needed (to 3 sig. figs.)

Explanation:people always get this wrong but i got you

Answer: The formula of the hydrate will be [tex]CuSO_4.7H_2O[/tex] and the name of the compound is copper sulphate heptahydrate.

Explanation:

Water of crystallisation is the number of water molecules that combine chemically in definite molecular proportion with the concerned salt in the crystalline state.

The formula of the hydrate will be [tex]CuSO_4.7H_2O[/tex] and the name of the compound is copper (II) sulphate heptahydrate as there are 7 molecules of water.

Have a wonderful day :) thanks for the points

Answer:

1: A b/c the table is showing that each different surface resulted in different time for acceleration.

2: D b/c the if the same force is applied to two different masses, the smaller masses would be impacted more and move faster. The larger an object is, then the greater the force you will need for it to move the same distance as the smaller masses.

Answer:

Answer:

compound composed of cations and anions the forces of attraction that bind oppositely charged ions together - ionic compound

lowest whole-number ratio of ions in an ionic compound - formula unit

a depiction of the valence electrons as dots around the symbol for an element - electron dot structure

a mixture of two or more elements, at least one of which is a metal - alloy

the attraction of the free-floating valence electrons for the positively charged metal - metallic bond

ions of the halogen atoms - halide ions

the electron(s) in the highest occupied energy level of an atom - valence electrons

the number of ions of opposite charge that surround each ion in a crystal - coordination number

Atoms in a compound tend to have the electron configuration of a noble gas - octet rule

Shows the kinds and numbers of atoms in the smallest representative unit - chemical formula

Explanation:

An ionic compound is composed of oppositely charged ions held together in a crystal lattice. The lowest whole-number ratio of ions in an ionic compound is known as the formula unit.  The number of ions of opposite charge that surround each ion in a crystal is called the coordination number. Ions of the halogen atoms  are negatively charged and are called halide ions

Elements are composed of atoms, the electron(s) in the highest occupied energy level of an atom are called valence electrons. In metals, the attraction of the free-floating valence electrons for the positively charged metal is called the metallic bond. For atoms of elements, a depiction of the valence electrons as dots around the symbol for an element is called the electron dot structure or Lewis structure.

A combination of elements may be a compound or an alloy. An alloy usually contains at least one metal. For compounds, the chemical formula Shows the kinds and numbers of atoms in the smallest representative unit. Atoms form compounds because atoms in a compound tend to have the electron configuration of a noble gas this is the octet rule.

The correct match of the given statement are 1 - f. ionic compound, 2- d. formula unit, 3 - e. electron dot structure, 4- b. alloy, 5- k. metallic bond, 6- a. halide ions, 7- j. valence electrons, 8- h. coordination number, 9 - c. octet rule, 10- i. chemical formula.

Ionic compounds are made up of oppositely charged ions that are kept together in a crystal lattice. The formula unit is the lowest whole-number ratio of ions in an ionic compound.  

The coordination number is the number of ions with opposite charges that surround each ion in a crystal. Halide ions are halogen atom ions that are negatively charged.

Elements are made up of atoms, and the electron(s) in the atom's highest occupied energy level are known as valence electrons. The metallic bond refers to the attraction of free-floating valence electrons to positively charged metals in metals.

The electron dot structure or Lewis structure is a representation of the valence electrons as dots around the symbol for an element for atoms.

A compound or an alloy is a mixture of components. A metal is frequently present in an alloy.

The chemical formula is used for compounds. The types and numbers of atoms in the smallest representative unit are displayed.

The octet rule states that atoms in a compound tend to have the electron configuration of a noble gas.

Therefore, the correct matches are: 1 - f. ionic compound, 2- d. formula unit, 3 - e. electron dot structure, 4- b. alloy, 5- k. metallic bond, 6- a. halide ions, 7- j. valence electrons, 8- h. coordination number, 9 - c. octet rule, 10- i. chemical formula.

Learn more about ionic compound, here:

https://brainly.com/question/30420333

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The given question is incomplete, so the most probable complete question is,

Match the correct statement with their appropriate terms:

Answer:

AN ELECTRON HAS THE SMALLEST MASS!

Answer:

A) electron

good luck, i hope this helps :)

Answer:

C4H4

Explanation:

92.31% of 52.0 g/mol is 48.0012 g/mol

7.69% of 52.0 g/mol is is 3.9988 g/mol

Carbon has a gram-formula mass of about 12, which goes into 48.0012 about 4 times, so there should be 4 atoms of Carbon

Hydrogen has a gram-formula mass of about 1, which goes into 3.9988 about 4 times, so there should also be 4 atoms of hydrogen

Explanation:

1. Pb(CO3)2

Element Number Mass Percet Composition

Oxygen 6 16.00 29.34%

Carbon 2 12.01 7.34%

Lead 1 207.21 63.32%

2. Ga(OH)3

Element Number Mass Percet Composition

Hydrogen 3 1.0079 2.50%

Oxygen. 3 16.00 39.75%

Gallium 1 69.72 57.74%

3. P4O10

Element Number Mass Percet Composition

Oxygen. 10 16.00. 56.36%

Phosphorus. 4 30.97 43.64%

4. Ca3P2

Element Number Mass Percet Composition

Phosphorus 2 30.97 34.00%

Calcium. 3 40.08 66.00%

5. Ti(NO3)3

Element Number Mass Percet Composition

Oxygen. 9 16.00 61.56%

Titanium. 1 47.87 20.47%

Nitrogen. 3 14.01 17.97%

Answer:

[tex]T_f=72.5\°C[/tex]

Explanation:

Hello!

In this case, since this a problem in which the cold water is heated by the hot water, we can write:

[tex]Q_{hot}+Q_{cold}=0[/tex]

Thus, by plugging in the mass, specific heat and temperatures, we obtain:

[tex]m_{hot}C_{hot}(T_f-T_{hot})+m_{cold}C_{cold}(T_f-T_{cold})=0[/tex]

Now, we can also write:

[tex]m_{hot}(T_f-T_{hot})+m_{cold}(T_f-T_{cold})=0[/tex]

Then, after applying some algebra, it is possible to obtain:

[tex]T_f=\frac{m_{hot}T_{hot}+m_{cold}T_{cold}}{m_{hot}+m_{cold}}[/tex]

If we plug in, we obtain:

[tex]T_f=\frac{350.0g*95.0\°C+150.0g*20.0\°C}{350.0g+150.0g}[/tex]

[tex]T_f=72.5\°C[/tex]

Best regards!

Answer:The ocean forms layers because the water has different density throughout. 2. Water with higher density sinks to the bottom while water with lower density sits on the top. ... Low-density water tends to be warmer and less saline, while high-density water is generally cooler and more saline.

Explanation: