1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mart [117]
3 years ago
11

PLS HELP FAST How does the circulatory system work at the tissue level? Cardiac muscle contracts. The heart pumps the blood. Nut

rients are delivered throughout the body. Blood cells carry nutrients.
Chemistry
2 answers:
Trava [24]3 years ago
8 0

Answer: it was B: the heart pumps the blood

Explanation:

i took the test and got an A

borishaifa [10]3 years ago
5 0

Answer:

b

Explanation:

You might be interested in
Oxygen is needed to produce energy in eukaryotic cells. Which organelle would you think needs oxygen the most
bezimeni [28]
Mitochondria need the most oxygen
5 0
3 years ago
A fish may have hundreds of offspring at a time and only a small number can survive. which characteristics of fish might allow t
mafiozo [28]
Well depends on what type of fish the parent is but i guess you can say:
what they eat
teeth
instincts
color
venom
blending in,etc
8 0
3 years ago
BaCl2(H2O)2 type of reaction
amid [387]

Answer:

2HCl + Ba(OH)2 = BaCl2 + 2H2O

Explanation:

3 0
3 years ago
Suppose 6.63g of zinc bromide is dissolved in 100.mL of a 0.60 M aqueous solution of potassium carbonate. Calculate the final mo
Alenkasestr [34]

Answer:

[Zn²⁺] = 4.78x10⁻¹⁰M

Explanation:

Based on the reaction:

ZnBr₂(aq) + K₂CO₃(aq) → ZnCO₃(s) + 2KBr(aq)

The zinc added produce the insoluble ZnCO₃ with Ksp = 1.46x10⁻¹⁰:

1.46x10⁻¹⁰ = [Zn²⁺] [CO₃²⁻]

We can find the moles of ZnBr₂ added = Moles of Zn²⁺ and moles of K₂CO₃ = Moles of CO₃²⁻ to find the moles of CO₃²⁻ that remains in solution, thus:

<em>Moles ZnB₂ (Molar mass: 225.2g/mol) = Moles Zn²⁺:</em>

6.63g ZnBr₂ * (1mol / 225.2g) = 0.02944moles Zn²⁺

<em>Moles K₂CO₃ = Moles CO₃²⁻:</em>

0.100L * (0.60mol/L) = 0.060 moles CO₃²⁻

Moles CO₃²⁻ in excess: 0.0600moles CO₃²⁻ - 0.02944moles =

0.03056moles CO₃²⁻ / 0.100L = 0.3056M = [CO₃²⁻]

Replacing in Ksp expression:

1.46x10⁻¹⁰ = [Zn²⁺] [0.3056M]

<h3>[Zn²⁺] = 4.78x10⁻¹⁰M</h3>

4 0
3 years ago
Similarities between Noble Gases and Alkali Metals?
Tanya [424]
There are no similarities between the two, though there are many differences!<span />
4 0
3 years ago
Other questions:
  • How to separate milk and water​
    15·1 answer
  • A 0.800 g sample of cuso4 (s was placed in calorimeter with 43.0g of water at an initial temp of 18.3 degrees celcious. as the c
    10·1 answer
  • Ce cantitate de O se gaseste in 5,8 g hidroxid de magneziu
    15·1 answer
  • 1. What are some similarities between the dogs pictured? What are some differences?
    5·1 answer
  • Keep your work area neal and
    15·1 answer
  • If the following elements were to combine with each other, choose which demonstrate the Law of Multiple Proportion. Select all t
    14·1 answer
  • Using two different instruments I measured the length of my foot to be 27 centimeters and 27.00 centimeters. Explain the differe
    13·1 answer
  • Please helppp final quiz helppp!!!!
    14·1 answer
  • Which formation is one feature of karst topography?
    5·2 answers
  • Please answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!