how would I create a BCA chemistry table for this? I believe i started it right but i’m unsure of the rest.

Calvin is setting up a model of the solar system. He positions a cardboard sun at one end of a school hallway and Pluto at the o

Oduvanchick [21]

Answer:

2.67 m

Explanation:

We can write the proportion several ways. One of them is ...

(model to Jupiter)/(Jupiter distance) = (model to Pluto)/(Pluto distance)

(model to Jupiter)/5.27 = 20 m/39.5 . . . . . fill in the numbers

(model to Jupiter) = 20 m(5.27/39.5) ≈ 2.67 m

The model of Jupiter should be placed 2.67 meters from the sun.

5 0

3 years ago

How reactive is an atom of Sodium(Na) and why? Question 1 options: Sodium (Na) is very reactive because it does not have a full

pentagon [3]

I'm pretty sure the answer is the first one. The fact that it doesn't have a full valence shell means that electrons from other atoms can react and bond with the sodium atom.
Hope this helps x

8 0

3 years ago

Read 2 more answers

Which of the following correctly organizes Mendel’s laws of hereditary from the third to the first?

dem82 [27]

Mendel's laws of hereditary are

1) Segregation

2) Independence

3) Dominance

Since you putting them from third to first, your

answer would be A. Dominance, Independence, Segregation.

5 0

3 years ago

Convert 175 g of H,O into moles.

devlian [24]

Answer:

9.71397613581

that'll help ya

3 0

3 years ago

one reaction that produces hydrogen gas can be represented by the unbalanced chemical equation Mg(s)+HCI(aq) -> MgCI(aq)+H2(g

Sonbull [250]

<h3>Answer:</h3>

128 g HCl

<h3>General Formulas and Concepts:</h3>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

Reading a Periodic Table

<u>Stoichiometry</u>

Reaction Mole Ratios
Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Unbalanced] Mg (s) + HCl (aq) → MgCl (aq) + H₂ (g)

↓

[RxN - Balanced] 2Mg (s) + 2HCl (aq) → 2MgCl (aq) + H₂ (g)

[Given] 3.25 mol Mg

[Solve] x g HCl

<u>Step 2: Identify Conversions</u>

[RxN] 2 mol Mg → 2 mol HCl

[PT] Molar Mass of H - 1.01 g/mol

[PT] Molar Mass of Cl - 35.45 g/mol

Molar Mass of HCl - 1.01 + 35.45 = 36.46 g/mol

<u>Step 3: Stoich</u>

[S - DA] Set up: $\displaystyle 3.25 \ mol \ Mg(\frac{2 \ mol \ HCl}{2 \ mol \ Mg})(\frac{36.46 \ g \ HCl}{1 \ mol \ HCl})$
[S - DA] Multiply/Divide [Cancel out units]: $\displaystyle 127.61 \ g \ HCl$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

127.61 g HCl ≈ 128 g HCl

3 0

2 years ago