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Vlad [161]
3 years ago
8

Help me out ! What’s the answer

Chemistry
1 answer:
Anni [7]3 years ago
5 0

Answer:

true

Explanation:

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A chemistry teacher needs to determine what quantity of sodium hydroxide to order
I am Lyosha [343]
To know the exact amount of sodium hydroxide that the teacher needs to order, we need to know how many students are there and the amount that each student uses.
We will then multiply these two values and get the amount needed to be ordered.

Since you have not provided such data in your question, I will just assume them to show the steps of the solution. You can then apply these steps to the values you have.

Now, assume that a class of 60 students and that each student needs to use 130 grams of sodium hydroxide to use during the lab.
This means that the teacher will order:
130 x 60 = 7800 grams = 7.8 kg of sodium hydroxide
5 0
4 years ago
Corn plants may be tall (TT or Tt) or short (tt). The breeding of two parent corn plants results in offspring that are all tall.
zubka84 [21]

Answer:

0%

Explanation:

  • The probability that both of the parents are homozygous recessive is zero.
  • In our case, The gene for tallness is dominant over the gene for dwarfism
  • Therefore; TT is homozygous dominant while tt is homozygous recessive and Tt is heterozygous.
  • Heterozygous genotype (Tt) will exhibit a tall phenotype.
  • When two parents are crossed and all the offsprings are tall then the possible genotype of the parents is either;
  1. Homozygous dominant for both parents or  

       TT x TT

    2. One parent is homozygous dominant and the other is homozygous recessive.

        TT x Tt

  • Therefore, the probability of having both parents as homozygous recessive when all the offspring are tall is Zero.      
8 0
3 years ago
The number of B2H6 molecules
Gre4nikov [31]

Answer:

6.022 × 10²³ molecules of B₂H₆

Explanation:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

B₂H₆ molecules:

21.63 g = one mole of B₂H₆= 6.022 × 10²³ molecules of B₂H₆

5 0
3 years ago
Using the difference of electronegativities, determine whether each bond will be nonpolar covalent, polar covalent, or ionic. Sh
kati45 [8]

Answer:

so

Explanation:

7 0
3 years ago
The chemical equation 2h2 + o2 6 2h2o represents a ___________.
AleksandrR [38]
The answer would be
A) synthesis
7 0
4 years ago
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