Which item is the weakest acid on the chart?

Answer:

Sodium (Element Symbol : Na)

Explanation:

Scientist identify a substance based off the color it burns. Sodium is identified as a yellow flame

Hope this helps! :)

Answer: Sodium, Na +

Answer:

B

P

K

Explanation:

K: 203pm

B: 84pm

P: 107pm

There isn't an E on the Periodic Table?!

Answer:

31 protons

37 Neutrons

^68 Ga

Explanation:

I don’t know the second part, but I’m guessing 37 because 37+31=68

its me again this is how you find the answer. note: i dont have the periodic table to see the exact atomic mass to find the molar mass however this is the answer:

so the actual formula is Mg(OH) with a 2 as a subscript because there are 2 Mg. so with Mg(OH)2 the Molar mass is 58.32g/mol. 58.32 g/mol x 7.1x1024 = 4.1x1026g

are there any answer choices?

Answer:

is what a model answer key

I am going to go with yes. Imao

Its empirical formula : C₅H₁₂O₆

The empirical formula is the smallest comparison of atoms of compound forming elements.  

(empirical formula) n = molecular formula  

The principle of determining empirical formula and molecular formula  

Ar C = 12 g/mol

Ar H = 1 g/mol

Ar O = 16 g/mol

mol ratio of C : H : O =

[tex]\tt \dfrac{36.36}{12}\div \dfrac{7.13}{1}\div \dfrac{56.51}{16}\\\\3.03\div 7.13\div 3.53\rightarrow divided~by~smallest(3.03)\\\\1\div 2.4\div 1.2(\times 10)\rightarrow 5\div 12\div 6[/tex]

Answer:

lose protons and form ions

Explanation:

I thjink hope this helps

PLease mark brainliest

Answer:Yes I am very good at acid

Explanation:

Answer: I say  B

Explanation:

Traditionally they include boron from group 3A, silicon and germanium in group 4A, aresnic and antimony in group 5A and tellurium from group 6A, although sometimes selenium, astatine, polonium and even bismuth have also been considered as metalloids. Typically metalloids are brittle and show a semi-metallic luster.

The six commonly recognised metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. Five elements are less frequently so classified: carbon, aluminium, selenium, polonium, and astatine.

Answer:

By adding water stirring

Explanation:

Answer:

Thermal energy refers to several distinct physical concepts, such as the internal energy of a system; heat or sensible heat, which are defined as types of energy transfer; or for the characteristic energy of a degree of freedom in a thermal system, where is temperature and is the Boltzmann constant

Explanation:

Answer:

The correct option is C

Explanation:

The structural model of C₃H₈ is that of option C.

In Structural model which can also be known as structural formula, the atoms of a molecule or compound are identified by the location of chemical bonds that exists between them. A structural formula is seen to consist of symbols. In this case, the atoms are connected by short lines. These short lines actually represent their chemical bonds. Where one, two, or three lines that  connect each element that make up the compound stands for single, double, or triple bonds, respectively.

Answer:

C

Explanation:

Answer:

last choice

Explanation:

oxidation and reduction can be defined in terms of adding or removing oxygen to a compound

oxidation is gaining oxygen

reduction is to loss oxygen

Answer:

The molar mass of Fe2O3 is 159.7 g/mol.

Answer:

H+ and NO3- ions

Explanation:

The Pb²+ ions react with the SO4²‐ ions to form a solid precipitate, i.e. they bond together and undergo a phase change;

On the contrary, the H+ and NO3- ions are aqueous ions before the reaction and the same after the reaction, i.e. they don't change;

Hence, the H+ and NO3- ions are spectator ions

The way to do this type of question is to consider what changes and what doesn't, look at phase changes and oxidation state changes

Answer:

No

Explanation:

If Teresa has a $100 Gift Card and her lunch is $8.50 everyday, $8.50 x 10 = 10 Lunchs for a total of $85 then add one more which = 11 Lunchs for a total of 93.50, this means she can not buy another lunch, Colin has a $75 gift card and his lunch is $6 everyday, so $6 x 10 = $60 for a total of 10 lunchs plus add 2 which is 12 lunchs for a total of $72 which means No Teresa's Gift Card Will Not Be Greater In Lunchs.

Answer:

The heart is pumping more blood throughout your body

Explanation:

Answer: It's easier for sodium to lose an electron because it has one valence electron whereas aluminum three valence electrons. It's easier for sodium in the other two examples as well because of the valance electrons and because it is very reactive with most elements because it really wants to get rid of the extra electron n the valance shell.

Answer:

132 Newtons

Explanation:

Force is mass times acceleration, so just multiply the numbers together. With the specified units for mass and acceleration the force will be in Newtons.

Hope this helps :)

Answer:

39.9g is the maximum mass of copper sulfate which could be produced

Explanation:

1 mole of Copper oxide, CuO contains 1 mole of Cu

In the same way, 1 mole of sulfuric acid, H₂SO₄, contains 1 mole of sulfate ion, SO₄²⁻.

Thus we can understand that there are 0.250moles of Cu and 0.500 moles of SO₄²⁻ to produce CuSO₄.

The maximum moles that could be produced are 0.250 moles (Copper is limiting reactant).

To convert these moles to mass we use the relative formula mass:

0.250 moles CuSO₄ * (159.5g/mol) =

Answer:

10.6

Explanation:

10,604 in other words not in a decimal

There are 10.6 moles of calcium in 425 g of calcium.

Given to us is the mass of calcium which is 425 g, we also know the molar mass of the calcium which is 40.08 g/mol

To calculate the number of moles in a given mass of a substance, you need to divide the mass by the molar mass of the substance.

Using this information, we can calculate the number of moles of calcium in 425 grams:

Number of moles = Mass (g) / Molar mass (g/mol)

Number of moles = 425 g / 40.08 g/mol

Number of moles ≈ 10.61 mol

Therefore, there are approximately 10.61 moles of calcium in 425 grams.

Learn more about the mole concept here:

https://brainly.com/question/22540912

#SPJ 2

Answer:

Heat of vaporization: 250.580 kJ/mol. Number of Protons/Electrons: 47. Number of neutrons: 61. Classification: Transition Metal.

Number of Protons/Electrons: 47

Number of neutrons: 61

Classification: Transition Metal

Number of shells: 5

Explanation:

add 47 to 61 and its 108! hope its right! have a great day!

Answer:

0.206 mol H₂O₂

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

7.00 moles H₂O₂

Step 2: Identify Conversions

Molar Mass of H - 1.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H₂O₂ - 2(1.01) + 2(16.00) = 34.02 g/mol

Step 3: Convert

[tex]7.00 \ g \ H_2O_2(\frac{1 \ mol \ H_2O_2}{34.02 \ g \ H_2O_2} )[/tex] = 0.205761 mol H₂O₂

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

0.205761 mol H₂O₂ ≈ 0.206 mol H₂O₂

Answer:

238.14

Explanation:

2 H + 2O

2(1.01) + 2(16.00) = 34.02

34.02*7 = 238.14

238.14

Answer:

The answer is c, i just got it right on my test

Explanation:

stay safe!