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Sergio039 [100]
3 years ago
5

Help please!!  Why do astronauts' muscles weaken in space?

Chemistry
2 answers:
Sloan [31]3 years ago
8 0
B. They work against a strong gravitational force

Hoochie [10]3 years ago
6 0
B. They work against a strong gravitational force
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Silver chloride is formed by mixing silver nitrate and barium chloride solutions. What volume of 1.50 M barium chloride solution
konstantin123 [22]

Answer:

1.22 mL

Explanation:

Let's consider the following balanced reaction.

2 AgNO₃ + BaCl₂ ⇄ Ba(NO₃)₂ + 2 AgCl

The molar mass of silver chloride is 143.32 g/mol. The moles corresponding to 0.525 g are:

0.525 g × (1 mol/143.32 g) = 3.66 × 10⁻³ mol

The molar ratio of AgCl to BaCl₂ is 2:1. The moles  of BaCl₂ are 1/2 × 3.66 × 10⁻³ mol = 1.83 × 10⁻³ mol.

The volume of 1.50 M barium chloride containing 1.83 × 10⁻³ moles is:

1.83 × 10⁻³ mol × (1 L/1.50 mol) = 1.22 × 10⁻³ L = 1.22 mL

8 0
3 years ago
Assign an oxidation number to each atom in the products.
Rzqust [24]
<h3>Answer:</h3>

Oxidation number refers to a number given to an atom which shows the number of number of electrons lost (or gained, if the number is negative), by an atom of that element in the compound.

Hence oxidation number of following atoms in given reaction are:

In NaOH:

Na = +1

O = -2

H = +1

In H2:

H = 0


8 0
3 years ago
Read 2 more answers
Butane - ethane - methane - propane: What do these hydrocarbons have in common? A) The same number of carbons present. B) They a
Paraphin [41]

Answer:

C) They all have single covalent bonds.

Explanation:

The given hydrocarbons Butane,Ethane,Methane,Propane belongs to alkane group.

In alkane group consists of hydrogen and carbon in which carbon_carbon bonds are single and carbon_hydrogen bond is also single.

The elements of this group makes bond by sharing of electrons that means they form single covalent bond.

Butane have 4 , Ethane has 2, Methane has 1, and Propane has 3 carbon atoms.

Since they have different number of carbon atoms so their structural formula also differs.

3 0
3 years ago
Convert 18◦C to Kelvin.
EastWind [94]

291.15 Kelvin

I hope this helps

7 0
2 years ago
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which action occurs during a nuclear change? a. no energy is involved in the reaction. b. the nucleus disappears. c. matter chan
Marta_Voda [28]
The correct answer is d
4 0
3 years ago
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